├── .gitignore ├── LICENSE ├── README.md ├── examples ├── group-match.md ├── match.md ├── matches.md ├── replace.md └── split.md ├── images ├── groupmatch-1.png ├── match-1.png ├── matches-1.png ├── replace-1.png ├── split-1.png ├── sql-regex-logo-large.png └── sql-regex-logo.png ├── install ├── aws-rds.md ├── dll │ ├── sql-server-regex-2005.dll │ ├── sql-server-regex-2008.dll │ ├── sql-server-regex-2012.dll │ ├── sql-server-regex-2014.dll │ └── sql-server-regex-2016.dll ├── load-assembly-2017.sql ├── load-assembly.sql ├── scalar-functions.sql ├── sql-2005.md ├── sql-2008.md ├── sql-2012.md ├── sql-2014.md ├── sql-2016.md ├── sql-2017.md └── table-valued-functions.sql ├── sql ├── load_assembly.sql ├── scalar_functions.sql └── table_valued_functions.sql ├── src ├── PostDeployScript.sql ├── PreDeployScript.sql ├── Properties │ └── AssemblyInfo.cs ├── Regex.cs ├── SqlRegex.sln ├── Test Scripts │ └── Test.sql └── sqlregex.sqlproj └── test ├── perf-test-baseline.sql ├── perf-test-groupmatch.sql ├── perf-test-match.sql ├── perf-test-matches.sql ├── perf-test-replace.sql ├── perf-test-split.sql ├── perf-tests.md ├── unit-test-groupmatch.sql ├── unit-test-match.sql ├── unit-test-matches.sql ├── unit-test-replace.sql ├── unit-test-split.sql └── unit-tests.md /.gitignore: -------------------------------------------------------------------------------- 1 | ## Ignore Visual Studio temporary files, build results, and 2 | ## files generated by popular Visual Studio add-ons. 3 | 4 | # User-specific files 5 | *.suo 6 | *.user 7 | *.userosscache 8 | *.sln.docstates 9 | 10 | # User-specific files (MonoDevelop/Xamarin Studio) 11 | *.userprefs 12 | 13 | # Build results 14 | [Dd]ebug/ 15 | [Dd]ebugPublic/ 16 | [Rr]elease/ 17 | [Rr]eleases/ 18 | x64/ 19 | x86/ 20 | bld/ 21 | [Bb]in/ 22 | [Oo]bj/ 23 | [Ll]og/ 24 | 25 | # Visual Studio 2015 cache/options directory 26 | .vs/ 27 | # Uncomment if you have tasks that create the project's static files in wwwroot 28 | #wwwroot/ 29 | 30 | # MSTest test Results 31 | [Tt]est[Rr]esult*/ 32 | [Bb]uild[Ll]og.* 33 | 34 | # NUNIT 35 | *.VisualState.xml 36 | TestResult.xml 37 | 38 | # Build Results of an ATL Project 39 | [Dd]ebugPS/ 40 | [Rr]eleasePS/ 41 | dlldata.c 42 | 43 | # DNX 44 | project.lock.json 45 | artifacts/ 46 | 47 | *_i.c 48 | *_p.c 49 | *_i.h 50 | *.ilk 51 | *.meta 52 | *.obj 53 | *.pch 54 | *.pdb 55 | *.pgc 56 | *.pgd 57 | *.rsp 58 | *.sbr 59 | *.tlb 60 | *.tli 61 | *.tlh 62 | *.tmp 63 | *.tmp_proj 64 | *.log 65 | *.vspscc 66 | *.vssscc 67 | .builds 68 | *.pidb 69 | *.svclog 70 | *.scc 71 | 72 | # Chutzpah Test files 73 | _Chutzpah* 74 | 75 | # Visual C++ cache files 76 | ipch/ 77 | *.aps 78 | *.ncb 79 | *.opendb 80 | *.opensdf 81 | *.sdf 82 | *.cachefile 83 | *.VC.db 84 | *.VC.VC.opendb 85 | 86 | # Visual Studio profiler 87 | *.psess 88 | *.vsp 89 | *.vspx 90 | *.sap 91 | 92 | # TFS 2012 Local Workspace 93 | $tf/ 94 | 95 | # Guidance Automation Toolkit 96 | *.gpState 97 | 98 | # ReSharper is a .NET coding add-in 99 | _ReSharper*/ 100 | *.[Rr]e[Ss]harper 101 | *.DotSettings.user 102 | 103 | # JustCode is a .NET coding add-in 104 | .JustCode 105 | 106 | # TeamCity is a build add-in 107 | _TeamCity* 108 | 109 | # DotCover is a Code Coverage Tool 110 | *.dotCover 111 | 112 | # NCrunch 113 | _NCrunch_* 114 | .*crunch*.local.xml 115 | nCrunchTemp_* 116 | 117 | # MightyMoose 118 | *.mm.* 119 | AutoTest.Net/ 120 | 121 | # Web workbench (sass) 122 | .sass-cache/ 123 | 124 | # Installshield output folder 125 | [Ee]xpress/ 126 | 127 | # DocProject is a documentation generator add-in 128 | DocProject/buildhelp/ 129 | DocProject/Help/*.HxT 130 | DocProject/Help/*.HxC 131 | DocProject/Help/*.hhc 132 | DocProject/Help/*.hhk 133 | DocProject/Help/*.hhp 134 | DocProject/Help/Html2 135 | DocProject/Help/html 136 | 137 | # Click-Once directory 138 | publish/ 139 | 140 | # Publish Web Output 141 | *.[Pp]ublish.xml 142 | *.azurePubxml 143 | # TODO: Comment the next line if you want to checkin your web deploy settings 144 | # but database connection strings (with potential passwords) will be unencrypted 145 | *.pubxml 146 | *.publishproj 147 | 148 | # Microsoft Azure Web App publish settings. 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This Corresponding Source 549 | shall include the Corresponding Source for any work covered by version 3 550 | of the GNU General Public License that is incorporated pursuant to the 551 | following paragraph. 552 | 553 | Notwithstanding any other provision of this License, you have 554 | permission to link or combine any covered work with a work licensed 555 | under version 3 of the GNU General Public License into a single 556 | combined work, and to convey the resulting work. The terms of this 557 | License will continue to apply to the part which is the covered work, 558 | but the work with which it is combined will remain governed by version 559 | 3 of the GNU General Public License. 560 | 561 | 14. Revised Versions of this License. 562 | 563 | The Free Software Foundation may publish revised and/or new versions of 564 | the GNU Affero General Public License from time to time. Such new versions 565 | will be similar in spirit to the present version, but may differ in detail to 566 | address new problems or concerns. 567 | 568 | Each version is given a distinguishing version number. If the 569 | Program specifies that a certain numbered version of the GNU Affero General 570 | Public License "or any later version" applies to it, you have the 571 | option of following the terms and conditions either of that numbered 572 | version or of any later version published by the Free Software 573 | Foundation. If the Program does not specify a version number of the 574 | GNU Affero General Public License, you may choose any version ever published 575 | by the Free Software Foundation. 576 | 577 | If the Program specifies that a proxy can decide which future 578 | versions of the GNU Affero General Public License can be used, that proxy's 579 | public statement of acceptance of a version permanently authorizes you 580 | to choose that version for the Program. 581 | 582 | Later license versions may give you additional or different 583 | permissions. However, no additional obligations are imposed on any 584 | author or copyright holder as a result of your choosing to follow a 585 | later version. 586 | 587 | 15. Disclaimer of Warranty. 588 | 589 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 590 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 591 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 592 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 593 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 594 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 595 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 596 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 597 | 598 | 16. Limitation of Liability. 599 | 600 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 601 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 602 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 603 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 604 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 605 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 606 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 607 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 608 | SUCH DAMAGES. 609 | 610 | 17. Interpretation of Sections 15 and 16. 611 | 612 | If the disclaimer of warranty and limitation of liability provided 613 | above cannot be given local legal effect according to their terms, 614 | reviewing courts shall apply local law that most closely approximates 615 | an absolute waiver of all civil liability in connection with the 616 | Program, unless a warranty or assumption of liability accompanies a 617 | copy of the Program in return for a fee. 618 | 619 | END OF TERMS AND CONDITIONS 620 | 621 | How to Apply These Terms to Your New Programs 622 | 623 | If you develop a new program, and you want it to be of the greatest 624 | possible use to the public, the best way to achieve this is to make it 625 | free software which everyone can redistribute and change under these terms. 626 | 627 | To do so, attach the following notices to the program. It is safest 628 | to attach them to the start of each source file to most effectively 629 | state the exclusion of warranty; and each file should have at least 630 | the "copyright" line and a pointer to where the full notice is found. 631 | 632 | 633 | Copyright (C) 634 | 635 | This program is free software: you can redistribute it and/or modify 636 | it under the terms of the GNU Affero General Public License as published 637 | by the Free Software Foundation, either version 3 of the License, or 638 | (at your option) any later version. 639 | 640 | This program is distributed in the hope that it will be useful, 641 | but WITHOUT ANY WARRANTY; without even the implied warranty of 642 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 643 | GNU Affero General Public License for more details. 644 | 645 | You should have received a copy of the GNU Affero General Public License 646 | along with this program. If not, see . 647 | 648 | Also add information on how to contact you by electronic and paper mail. 649 | 650 | If your software can interact with users remotely through a computer 651 | network, you should also make sure that it provides a way for users to 652 | get its source. For example, if your program is a web application, its 653 | interface could display a "Source" link that leads users to an archive 654 | of the code. There are many ways you could offer source, and different 655 | solutions will be better for different programs; see section 13 for the 656 | specific requirements. 657 | 658 | You should also get your employer (if you work as a programmer) or school, 659 | if any, to sign a "copyright disclaimer" for the program, if necessary. 660 | For more information on this, and how to apply and follow the GNU AGPL, see 661 | . -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # SQL Server Regex 2 | 3 | ![SQL Regex Logo](/images/sql-regex-logo.png) 4 | 5 | SQL-Server-Regex gives you the power to run regular expressions inside SQL Server queries. It works by using SQL CLR functions to call the C# [System.Text.RegularExpressions](https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex.aspx) library. 6 | 7 | # Examples 8 | 9 | ### Match 10 | 11 | The [RegexMatch()](/examples/match.md) scalar function lets you call a regular expression against a string, and returns the first result if there is a match. 12 | 13 | ![Match SSMS example](/images/match-1.png) 14 | 15 | ### Matches 16 | 17 | The [RegexMatches()](/examples/matches.md) table-valued function lets you call a regular expression against a string, and returns all matches. 18 | 19 | ![Matches SSMS example](/images/matches-1.png) 20 | 21 | ### Group Match 22 | 23 | The [RegexGroupMatch()](/examples/group-match.md) scalar function lets you call a regular expression with *named groups* against a string, and returns the group name you specify. 24 | 25 | ![Group Match SSMS example](/images/groupmatch-1.png) 26 | 27 | ### Replace 28 | 29 | The [RegexReplace()](/examples/replace.md) scalar function lets you call a regular expression to find-and-replace inside a string. You can also match parts of a string and re-arrange them using references. 30 | 31 | ![Replace SSMS example](/images/replace-1.png) 32 | 33 | ### Split 34 | 35 | The [RegexSplit()](/examples/split.md) table-valued function lets you call a regular expression against a string to split it into pieces, and returns the pieces. 36 | 37 | ![Split SSMS example](/images/split-1.png) 38 | 39 | 40 | # Installation 41 | 42 | You can install sql-server-regex on most versions of SQL Server. This works the same for virtual machines or cloud VMs. 43 | 44 | * [SQL Server 2016](/install/sql-2016.md) 45 | * [SQL Server 2014](/install/sql-2014.md) 46 | * [SQL Server 2012](/install/sql-2012.md) 47 | * [SQL Server 2008 and 2008 R2](/install/sql-2008.md) 48 | * [SQL Server 2005](/install/sql-2005.md) 49 | 50 | You can also install sql-server-regex onto [AWS RDS](/install/aws-rds.md). 51 | 52 | *Note: for SQL Server 2005, 2008, and 2008R2, if you can't install the DLL directly, you may you need to compile the assembly yourself using .NET 2.0 and an old version of Visual Studio*. 53 | 54 | # Testing 55 | 56 | This work has been tested, both for functionality and performance. 57 | 58 | * [Unit Testing](/test/unit-tests.md) 59 | * [Performance Testing](/test/perf-tests.md) 60 | 61 | # Resources 62 | 63 | * [CLR Table-Valued Functions](https://msdn.microsoft.com/en-us/library/ms131103.aspx) 64 | * [Introduction to SQL Server Table-Valued Functions](https://www.mssqltips.com/sqlservertip/2582/introduction-to-sql-server-clr-table-valued-functions/) 65 | -------------------------------------------------------------------------------- /examples/group-match.md: -------------------------------------------------------------------------------- 1 | # Group Match 2 | 3 | ![SQL Regex Logo](/images/sql-regex-logo.png) 4 | 5 | RegexGroupMatch() is a scalar function that lets you run a regular expression using *named groups* against a string. It returns the match for the group you've named. RegexGroupMatch() is a SQL CLR function that exposes the [System.Text.RegularExpressions](https://msdn.microsoft.com/en-us/library/system.text.regularexpressions(v=vs.110).aspx)' [Match()](https://msdn.microsoft.com/en-us/library/b9712a7w(v=vs.110).aspx) method. 6 | 7 | Let's look at a few examples, inspired by a handy [Regular Expressions tutorial](http://www.regular-expressions.info/examples.html) 8 | 9 | 10 | ### Screenshot 11 | 12 | ![Group Match SSMS example](/images/groupmatch-1.png) 13 | 14 | ### Retrieve the domain of an email address 15 | 16 | ``` 17 | declare @regex_pattern varchar(max) = '[_]*([a-z0-9]+(\.|_*)?)+@(?([a-z][a-z0-9-]+(\.|-*\.))+[a-z]{2,6})' 18 | 19 | select dbo.RegexGroupMatch('My email address is fakeemail@hotmail.com', @regex_pattern, 'domain') 20 | ``` -------------------------------------------------------------------------------- /examples/match.md: -------------------------------------------------------------------------------- 1 | # Match 2 | 3 | ![SQL Regex Logo](/images/sql-regex-logo.png) 4 | 5 | RegexMatch() is a scalar function that lets you run a regular expression against a string. It is a SQL CLR function that exposes the [System.Text.RegularExpressions](https://msdn.microsoft.com/en-us/library/system.text.regularexpressions(v=vs.110).aspx)' [Match()](https://msdn.microsoft.com/en-us/library/b9712a7w(v=vs.110).aspx) method. 6 | 7 | Let's look at a few examples, inspired by a handy [Regular Expressions tutorial](http://www.regular-expressions.info/examples.html) 8 | 9 | 10 | ### Screenshot 11 | 12 | ![Match SSMS example](/images/match-1.png) 13 | 14 | 15 | ### IP Addresses 16 | 17 | Let's pull an IPv4 address out of a string. 18 | 19 | ``` 20 | declare @regex_pattern varchar(max) = '\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b' 21 | 22 | select dbo.RegexMatch('10.1.1.1', @regex_pattern) 23 | 24 | select dbo.RegexMatch('The IP address detected was 10.1.1.1 at 10:30pm', @regex_pattern) 25 | ``` 26 | 27 | Note: this simple example will match some non-valid IP addresses as well (e.g. 999.999.999.999). You can make a more exact regular expression using a more complicated pattern, such as: 28 | 29 | '\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\. 30 | (25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\. 31 | (25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\. 32 | (25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b' 33 | 34 | 35 | ### Floating Point Numbers 36 | 37 | Let's pull out a floating-point number. 38 | 39 | ``` 40 | declare @regex_pattern varchar(max) = '[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?' 41 | 42 | select dbo.RegexMatch('Avogrado''s number is 6.0221409e+23', @regex_pattern) 43 | ``` 44 | -------------------------------------------------------------------------------- /examples/matches.md: -------------------------------------------------------------------------------- 1 | # Matches 2 | 3 | ![SQL Regex Logo](/images/sql-regex-logo.png) 4 | 5 | RegexMatches() is a table-valued function that lets you run a regular expression against a string. All of the matched 'chunks' inside the string are returned. RegexMatches() is a SQL CLR function that exposes the [System.Text.RegularExpressions](https://msdn.microsoft.com/en-us/library/system.text.regularexpressions(v=vs.110).aspx)' [Match()](https://msdn.microsoft.com/en-us/library/b9712a7w(v=vs.110).aspx) method. 6 | 7 | Let's look at a few examples, inspired by another handy [Regular Expressions tutorial](http://www.regular-expressions.info/examples.html) 8 | 9 | 10 | ### Screenshot 11 | 12 | ![Regex Matches](/images/matches-1.png) 13 | 14 | 15 | ### Grabbing HTML Tags 16 | 17 | Let's grab HTML tags out of text. 18 | 19 | ``` 20 | declare @regex_pattern varchar(max) = '<([A-Z][A-Z0-9]*)\b[^>]*>(.*?)' 21 | 22 | select * 23 | from dbo.RegexMatches('The HTML is onetwo', @regex_pattern) 24 | ``` 25 | -------------------------------------------------------------------------------- /examples/replace.md: -------------------------------------------------------------------------------- 1 | # Replace 2 | 3 | ![SQL Regex Logo](/images/sql-regex-logo.png) 4 | 5 | RegexReplace() is a scalar function that lets you find-and-replace inside a string using regular expressions. RegexReplace() is a SQL CLR function that exposes the [System.Text.RegularExpressions](https://msdn.microsoft.com/en-us/library/system.text.regularexpressions(v=vs.110).aspx)' [Replace()](https://msdn.microsoft.com/en-us/library/b9712a7w(v=vs.110).aspx) method. 6 | 7 | Let's look at a few examples, inspired by another handy [Regular Expressions tutorial](http://www.regular-expressions.info/examples.html) 8 | 9 | 10 | ### Screenshot 11 | 12 | ![Replace SSMS example](/images/replace-1.png) 13 | 14 | 15 | ### Change a sentence 16 | 17 | ``` 18 | select dbo.RegexReplace('Hello, my name is John Doe', 'my name is (.+)', 'my name is not $1') 19 | ``` -------------------------------------------------------------------------------- /examples/split.md: -------------------------------------------------------------------------------- 1 | # Split 2 | 3 | ![SQL Regex Logo](/images/sql-regex-logo.png) 4 | 5 | RegexSplit() is a table-valued function that lets you split a string into pieces using a specified regular expression. RegexSplit() is a SQL CLR table-valued function that exposes the [System.Text.RegularExpressions](https://msdn.microsoft.com/en-us/library/system.text.regularexpressions(v=vs.110).aspx)' [Split()](https://msdn.microsoft.com/en-us/library/b9712a7w(v=vs.110).aspx) method. 6 | 7 | Let's look at a few examples, inspired by another handy [Regular Expressions tutorial](http://wiki.tcl.tk/989) 8 | 9 | 10 | ### Screenshot 11 | 12 | ![Split SSMS example](/images/split-1.png) 13 | 14 | 15 | ### Split a String Into Words 16 | 17 | Let's split a string into words 18 | 19 | ``` 20 | declare @regex_pattern varchar(max) = '\s+' 21 | 22 | select * 23 | from dbo.RegexSplit('How do I split an arbitrary string into words?', @regex_pattern) 24 | 25 | select * 26 | from dbo.RegexSplit('Does this work if the words are oddly-formed?', @regex_pattern) 27 | ``` 28 | -------------------------------------------------------------------------------- /images/groupmatch-1.png: 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/install/dll/sql-server-regex-2016.dll: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/DevNambi/sql-server-regex/56e1830981be61a31855614d4cec34479522ac39/install/dll/sql-server-regex-2016.dll -------------------------------------------------------------------------------- /install/load-assembly-2017.sql: -------------------------------------------------------------------------------- 1 | -- First, drop the functions if they already exist. 2 | if OBJECT_ID('dbo.RegexMatch') is not null 3 | begin 4 | exec ('drop function dbo.RegexMatch'); 5 | end 6 | go 7 | 8 | if OBJECT_ID('dbo.RegexGroupMatch') is not null 9 | begin 10 | exec ('drop function dbo.RegexGroupMatch'); 11 | end 12 | go 13 | 14 | if OBJECT_ID('dbo.RegexReplace') is not null 15 | begin 16 | exec ('drop function dbo.RegexReplace'); 17 | end 18 | go 19 | 20 | if OBJECT_ID('dbo.RegexMatches') is not null 21 | begin 22 | exec ('drop function dbo.RegexMatches'); 23 | end 24 | go 25 | 26 | if OBJECT_ID('dbo.RegexSplit') is not null 27 | begin 28 | exec ('drop function dbo.RegexSplit'); 29 | end 30 | go 31 | 32 | 33 | -- Second, drop the assembly and remove trust if it already exists 34 | IF (SELECT COUNT(1) FROM sys.trusted_assemblies WHERE description like 'sql-server-regex%')=1 35 | BEGIN 36 | declare @AssemblyHash varbinary(64); 37 | SELECT @AssemblyHash=hash from sys.trusted_assemblies where description like 'sql-server-regex%' 38 | EXEC sp_drop_trusted_assembly @AssemblyHash; 39 | END 40 | go 41 | 42 | 43 | -- Third, finally, trust and create the assembly (sql-server-regex-2016.dll is compatible with SQL Server 2017) 44 | EXEC sp_add_trusted_assembly 45 | 0x52A8DC6C31B95961455746731FEC5DC4E8BF7F8791A6854473BB4F9A9577AA2BC4376213EC4AD9C3ADB0A0A55CEACCEBB9A01D7AC5CCBACA054B0F14EF4212D1, 46 | N'sql-server-regex, version=1.0.6494.17073'; 47 | 48 | declare @AssemblyLocation varchar(8000); 49 | 50 | set @AssemblyLocation = '--SET LOCATION HERE, e.g. C:\Install\sql-server-regex-2016.dll' 51 | 52 | drop assembly IF EXISTS RegexAssembly 53 | 54 | CREATE ASSEMBLY RegexAssembly 55 | FROM @AssemblyLocation 56 | WITH PERMISSION_SET = SAFE; 57 | 58 | -- see https://msdn.microsoft.com/en-us/library/ms189524.aspx for details 59 | -------------------------------------------------------------------------------- /install/load-assembly.sql: -------------------------------------------------------------------------------- 1 | -- First, drop the functions if they already exist. 2 | if OBJECT_ID('dbo.RegexMatch') is not null 3 | begin 4 | exec ('drop function dbo.RegexMatch'); 5 | end 6 | go 7 | 8 | if OBJECT_ID('dbo.RegexGroupMatch') is not null 9 | begin 10 | exec ('drop function dbo.RegexGroupMatch'); 11 | end 12 | go 13 | 14 | if OBJECT_ID('dbo.RegexReplace') is not null 15 | begin 16 | exec ('drop function dbo.RegexReplace'); 17 | end 18 | go 19 | 20 | if OBJECT_ID('dbo.RegexMatches') is not null 21 | begin 22 | exec ('drop function dbo.RegexMatches'); 23 | end 24 | go 25 | 26 | if OBJECT_ID('dbo.RegexSplit') is not null 27 | begin 28 | exec ('drop function dbo.RegexSplit'); 29 | end 30 | go 31 | 32 | 33 | -- Second, drop the assembly if it already exists 34 | drop assembly RegexAssembly 35 | go 36 | 37 | 38 | -- Third, finally, create the assembly 39 | declare @AssemblyLocation varchar(8000); 40 | 41 | set @AssemblyLocation = '--SET LOCATION HERE, e.g. C:\Install\sql-server-regex-2016.dll' 42 | 43 | CREATE ASSEMBLY RegexAssembly 44 | FROM @AssemblyLocation 45 | WITH PERMISSION_SET = SAFE; 46 | 47 | -- see https://msdn.microsoft.com/en-us/library/ms189524.aspx for details 48 | -------------------------------------------------------------------------------- /install/scalar-functions.sql: -------------------------------------------------------------------------------- 1 | if OBJECT_ID('dbo.RegexMatch') is not null 2 | begin 3 | exec ('drop function dbo.RegexMatch'); 4 | end 5 | go 6 | 7 | if OBJECT_ID('dbo.RegexGroupMatch') is not null 8 | begin 9 | exec ('drop function dbo.RegexGroupMatch'); 10 | end 11 | go 12 | 13 | if OBJECT_ID('dbo.RegexReplace') is not null 14 | begin 15 | exec ('drop function dbo.RegexReplace'); 16 | end 17 | go 18 | 19 | 20 | -- see https://msdn.microsoft.com/en-us/library/ms186755.aspx for details 21 | 22 | CREATE FUNCTION dbo.RegexMatch (@input nvarchar(max), @pattern nvarchar(max)) 23 | RETURNS nvarchar(max) 24 | AS EXTERNAL NAME [RegexAssembly].[UDF].[Match] 25 | go 26 | 27 | CREATE FUNCTION dbo.RegexGroupMatch (@input nvarchar(max), @pattern nvarchar(max), @group nvarchar(max)) 28 | RETURNS nvarchar(max) 29 | AS EXTERNAL NAME [RegexAssembly].[UDF].[GroupMatch] 30 | go 31 | 32 | CREATE FUNCTION dbo.RegexReplace (@input nvarchar(max), @pattern nvarchar(max), @replacement nvarchar(max)) 33 | RETURNS nvarchar(max) 34 | AS EXTERNAL NAME [RegexAssembly].[UDF].[Replace] 35 | go 36 | 37 | -------------------------------------------------------------------------------- /install/sql-2005.md: -------------------------------------------------------------------------------- 1 | # Install onto SQL Server 2005 2 | 3 | ![SQL Regex Logo](/images/sql-regex-logo.png) 4 | 5 | To install sql-server-regex, you need to: 6 | 7 | 1. Download or fork this code. 8 | 2. Enable CLR 9 | 3. Install the sql-server-regex assembly 10 | 4. Create the T-SQL functions 11 | 12 | *Note*: this requires sysadmin privileges on your SQL Server instance. 13 | 14 | 15 | ### Enable CLR 16 | 17 | You need to [enable CLR on SQL Server](https://msdn.microsoft.com/en-us/library/ms131048.aspx) before you do anything else. 18 | 19 | ``` 20 | exec sp_configure 'clr enabled', 1 21 | go 22 | reconfigure 23 | go 24 | ``` 25 | 26 | ### Install the Assembly 27 | 28 | 1. Download the [load-assembly.sql](/install/load-assembly.sql) file. 29 | 2. Download the [sql-server-regex 2005 DLL](/install/dll/sql-server-regex-2005.dll). 30 | 3. Copy both to the server you want to install sql-server-regex onto. 31 | 4. Open load-assembly.sql, and set the value of @AssemblyLocation to the location of the sql-server-regex-2005.dll. 32 | 5. Run the script. 33 | 34 | *Note*: if you want to compile the assembly yourself from code, go ahead. Make sure your target platform is the version of SQL Server you want (e.g. SQL Server 2005), and that you copy the DLL that's created to the install location in step 3, above. 35 | 36 | ### Create the T-SQL Functions 37 | 38 | The final step is to create the scalar and table-valued functions that you can query using T-SQL. 39 | 40 | 1. Run [scalar-functions.sql](/install/scalar-functions.sql) 41 | 2. Run [table-valued-functions.sql](/install/table-valued-functions.sql) -------------------------------------------------------------------------------- /install/sql-2008.md: -------------------------------------------------------------------------------- 1 | # Install onto SQL Server 2008 2 | 3 | ![SQL Regex Logo](/images/sql-regex-logo.png) 4 | 5 | To install sql-server-regex, you need to: 6 | 7 | 1. Download or fork this code. 8 | 2. Enable CLR 9 | 3. Install the sql-server-regex assembly 10 | 4. Create the T-SQL functions 11 | 12 | *Note*: this requires sysadmin privileges on your SQL Server instance. 13 | 14 | 15 | ### Enable CLR 16 | 17 | You need to [enable CLR on SQL Server](https://msdn.microsoft.com/en-us/library/ms131048.aspx) before you do anything else. 18 | 19 | ``` 20 | exec sp_configure 'clr enabled', 1 21 | go 22 | reconfigure 23 | go 24 | ``` 25 | 26 | ### Install the Assembly 27 | 28 | 1. Download the [load-assembly.sql](/install/load-assembly.sql) file. 29 | 2. Download the [sql-server-regex 2008 DLL](/install/dll/sql-server-regex-2008.dll). 30 | 3. Copy both to the server you want to install sql-server-regex onto. 31 | 4. Open load-assembly.sql, and set the value of @AssemblyLocation to the location of the sql-server-regex-2008.dll. 32 | 5. Run the script. 33 | 34 | *Note*: if you want to compile the assembly yourself from code, go ahead. Make sure your target platform is the version of SQL Server you want (e.g. SQL Server 2008), and that you copy the DLL that's created to the install location in step 3, above. 35 | 36 | ### Create the T-SQL Functions 37 | 38 | The final step is to create the scalar and table-valued functions that you can query using T-SQL. 39 | 40 | 1. Run [scalar-functions.sql](/install/scalar-functions.sql) 41 | 2. Run [table-valued-functions.sql](/install/table-valued-functions.sql) -------------------------------------------------------------------------------- /install/sql-2012.md: -------------------------------------------------------------------------------- 1 | # Install onto SQL Server 2016 2 | 3 | ![SQL Regex Logo](/images/sql-regex-logo.png) 4 | 5 | To install sql-server-regex, you need to: 6 | 7 | 1. Download or fork this code. 8 | 2. Enable CLR 9 | 3. Install the sql-server-regex assembly 10 | 4. Create the T-SQL functions 11 | 12 | *Note*: this requires sysadmin privileges on your SQL Server instance. 13 | 14 | 15 | ### Enable CLR 16 | 17 | You need to [enable CLR on SQL Server](https://msdn.microsoft.com/en-us/library/ms131048.aspx) before you do anything else. 18 | 19 | ``` 20 | exec sp_configure 'clr enabled', 1 21 | go 22 | reconfigure 23 | go 24 | ``` 25 | 26 | ### Install the Assembly 27 | 28 | 1. Download the [load-assembly.sql](/install/load-assembly.sql) file. 29 | 2. Download the [sql-server-regex 2016 DLL](/install/dll/sql-server-regex-2012.dll). 30 | 3. Copy both to the server you want to install sql-server-regex onto. 31 | 4. Open load-assembly.sql, and set the value of @AssemblyLocation to the location of the sql-server-regex-2012.dll. 32 | 5. Run the script. 33 | 34 | *Note*: if you want to compile the assembly yourself from code, go ahead. Make sure your target platform is the version of SQL Server you want (e.g. SQL Server 2012), and that you copy the DLL that's created to the install location in step 3, above. 35 | 36 | ### Create the T-SQL Functions 37 | 38 | The final step is to create the scalar and table-valued functions that you can query using T-SQL. 39 | 40 | 1. Run [scalar-functions.sql](/install/scalar-functions.sql) 41 | 2. Run [table-valued-functions.sql](/install/table-valued-functions.sql) -------------------------------------------------------------------------------- /install/sql-2014.md: -------------------------------------------------------------------------------- 1 | # Install onto SQL Server 2014 2 | 3 | ![SQL Regex Logo](/images/sql-regex-logo.png) 4 | 5 | To install sql-server-regex, you need to: 6 | 7 | 1. Download or fork this code. 8 | 2. Enable CLR 9 | 3. Install the sql-server-regex assembly 10 | 4. Create the T-SQL functions 11 | 12 | *Note*: this requires sysadmin privileges on your SQL Server instance. 13 | 14 | 15 | ### Enable CLR 16 | 17 | You need to [enable CLR on SQL Server](https://msdn.microsoft.com/en-us/library/ms131048.aspx) before you do anything else. 18 | 19 | ``` 20 | exec sp_configure 'clr enabled', 1 21 | go 22 | reconfigure 23 | go 24 | ``` 25 | 26 | ### Install the Assembly 27 | 28 | 1. Download the [load-assembly.sql](/install/load-assembly.sql) file. 29 | 2. Download the [sql-server-regex 2014 DLL](/install/dll/sql-server-regex-2014.dll). 30 | 3. Copy both to the server you want to install sql-server-regex onto. 31 | 4. Open load-assembly.sql, and set the value of @AssemblyLocation to the location of the sql-server-regex-2014.dll. 32 | 5. Run the script. 33 | 34 | *Note*: if you want to compile the assembly yourself from code, go ahead. Make sure your target platform is the version of SQL Server you want (e.g. SQL Server 2014), and that you copy the DLL that's created to the install location in step 3, above. 35 | 36 | ### Create the T-SQL Functions 37 | 38 | The final step is to create the scalar and table-valued functions that you can query using T-SQL. 39 | 40 | 1. Run [scalar-functions.sql](/install/scalar-functions.sql) 41 | 2. Run [table-valued-functions.sql](/install/table-valued-functions.sql) -------------------------------------------------------------------------------- /install/sql-2016.md: -------------------------------------------------------------------------------- 1 | # Install onto SQL Server 2016 2 | 3 | ![SQL Regex Logo](/images/sql-regex-logo.png) 4 | 5 | To install sql-server-regex, you need to: 6 | 7 | 1. Download or fork this code. 8 | 2. Enable CLR 9 | 3. Install the sql-server-regex assembly 10 | 4. Create the T-SQL functions 11 | 12 | *Note*: this requires sysadmin privileges on your SQL Server instance. 13 | 14 | 15 | ### Enable CLR 16 | 17 | You need to [enable CLR on SQL Server](https://msdn.microsoft.com/en-us/library/ms131048.aspx) before you do anything else. 18 | 19 | ``` 20 | exec sp_configure 'clr enabled', 1 21 | go 22 | reconfigure 23 | go 24 | ``` 25 | 26 | ### Install the Assembly 27 | 28 | 1. Download [load-assembly.sql](/install/load-assembly.sql). 29 | 2. Download the [sql-server-regex 2016 DLL](/install/dll/sql-server-regex-2016.dll). 30 | 3. Copy both to the server you want to install sql-server-regex onto. 31 | 4. Open load-assembly.sql, and set the value of @AssemblyLocation to the location of the sql-server-regex-2016.dll. 32 | 5. Run the script. 33 | 34 | *Note*: if you want to compile the assembly yourself from code, go ahead. Make sure your target platform is the version of SQL Server you want (e.g. SQL Server 2016), and that you copy the DLL that's created to the install location in step 3, above. 35 | 36 | ### Create the T-SQL Functions 37 | 38 | The final step is to create the scalar and table-valued functions that you can query using T-SQL. 39 | 40 | 1. Run [scalar-functions.sql](/install/scalar-functions.sql) 41 | 2. Run [table-valued-functions.sql](/install/table-valued-functions.sql) -------------------------------------------------------------------------------- /install/sql-2017.md: -------------------------------------------------------------------------------- 1 | # Install onto SQL Server 2017 2 | 3 | ![SQL Regex Logo](/images/sql-regex-logo.png) 4 | 5 | To install sql-server-regex, you need to: 6 | 7 | 1. Download or fork this code. 8 | 2. Enable CLR 9 | 3. Install the sql-server-regex assembly 10 | 4. Create the T-SQL functions 11 | 12 | *Note*: this requires sysadmin privileges on your SQL Server instance. 13 | 14 | 15 | ### Enable CLR 16 | 17 | You need to [enable CLR on SQL Server](https://msdn.microsoft.com/en-us/library/ms131048.aspx) before you do anything else. 18 | 19 | ``` 20 | exec sp_configure 'clr enabled', 1 21 | go 22 | reconfigure 23 | go 24 | ``` 25 | 26 | ### Install the Assembly 27 | 28 | 1. Download [load-assembly.sql](/install/load-assembly-2017.sql). 29 | 2. Download the [sql-server-regex 2016 DLL](/install/dll/sql-server-regex-2016.dll). 30 | 3. Copy both to the server you want to install sql-server-regex onto. 31 | 4. Open load-assembly.sql, and set the value of @AssemblyLocation to the location of the sql-server-regex-2016.dll. 32 | 5. Run the script. 33 | 34 | *Note*: if you want to compile the assembly yourself from code, go ahead. Make sure your target platform is the version of SQL Server you want (e.g. SQL Server 2016), and that you copy the DLL that's created to the install location in step 3, above. 35 | 36 | ### Create the T-SQL Functions 37 | 38 | The final step is to create the scalar and table-valued functions that you can query using T-SQL. 39 | 40 | 1. Run [scalar-functions.sql](/install/scalar-functions.sql) 41 | 2. Run [table-valued-functions.sql](/install/table-valued-functions.sql) -------------------------------------------------------------------------------- /install/table-valued-functions.sql: -------------------------------------------------------------------------------- 1 | if OBJECT_ID('dbo.RegexMatches') is not null 2 | begin 3 | exec ('drop function dbo.RegexMatches'); 4 | end 5 | go 6 | 7 | if OBJECT_ID('dbo.RegexSplit') is not null 8 | begin 9 | exec ('drop function dbo.RegexSplit'); 10 | end 11 | go 12 | 13 | -- http://msdn.microsoft.com/en-us/library/ms131103.aspx 14 | 15 | CREATE FUNCTION dbo.RegexMatches (@input nvarchar(max), @pattern nvarchar(max)) 16 | RETURNS TABLE (Position int, Match NVARCHAR(max)) 17 | EXTERNAL NAME [RegexAssembly].[UDF].[Matches] 18 | go 19 | 20 | CREATE FUNCTION dbo.RegexSplit (@input nvarchar(max), @pattern nvarchar(max)) 21 | RETURNS TABLE (Position int, Match NVARCHAR(max)) 22 | EXTERNAL NAME [RegexAssembly].[UDF].[Split] 23 | go -------------------------------------------------------------------------------- /sql/load_assembly.sql: -------------------------------------------------------------------------------- 1 | use Scratch 2 | go 3 | 4 | --DROP FUNCTIONS FIRST 5 | drop function dbo.RegexMatch 6 | go 7 | 8 | drop function dbo.RegexGroupMatch 9 | go 10 | 11 | drop function dbo.RegexReplace 12 | go 13 | 14 | drop function dbo.RegexMatches 15 | go 16 | 17 | drop function dbo.RegexSplit 18 | go 19 | 20 | 21 | --declare @FileLocation nvarchar(4000) = 'D:\GitHub\sql-server-regex\dev\bin\Debug\dev.dll' 22 | 23 | drop assembly RegexAssembly 24 | go 25 | 26 | -- see https://msdn.microsoft.com/en-us/library/ms189524.aspx for details 27 | CREATE ASSEMBLY RegexAssembly 28 | FROM 'D:\GitHub\sql-server-regex\dev\bin\Debug\dev.dll' 29 | WITH PERMISSION_SET = SAFE; 30 | 31 | 32 | -------------------------------------------------------------------------------- /sql/scalar_functions.sql: -------------------------------------------------------------------------------- 1 | use Scratch 2 | go 3 | 4 | drop function dbo.RegexMatch 5 | go 6 | 7 | drop function dbo.RegexGroupMatch 8 | go 9 | 10 | drop function dbo.RegexReplace 11 | go 12 | 13 | -- see https://msdn.microsoft.com/en-us/library/ms186755.aspx for details 14 | 15 | CREATE FUNCTION dbo.RegexMatch (@input nvarchar(max), @pattern nvarchar(max)) 16 | RETURNS nvarchar(max) 17 | AS EXTERNAL NAME [RegexAssembly].[UDF].[Match] 18 | go 19 | 20 | CREATE FUNCTION dbo.RegexGroupMatch (@input nvarchar(max), @pattern nvarchar(max), @group nvarchar(max)) 21 | RETURNS nvarchar(max) 22 | AS EXTERNAL NAME [RegexAssembly].[UDF].[GroupMatch] 23 | go 24 | 25 | CREATE FUNCTION dbo.RegexReplace (@input nvarchar(max), @pattern nvarchar(max), @replacement nvarchar(max)) 26 | RETURNS nvarchar(max) 27 | AS EXTERNAL NAME [RegexAssembly].[UDF].[Replace] 28 | go 29 | 30 | -------------------------------------------------------------------------------- /sql/table_valued_functions.sql: -------------------------------------------------------------------------------- 1 | use Scratch 2 | go 3 | 4 | drop function dbo.RegexMatches 5 | go 6 | 7 | drop function dbo.RegexSplit 8 | go 9 | 10 | -- http://msdn.microsoft.com/en-us/library/ms131103.aspx 11 | 12 | CREATE FUNCTION dbo.RegexMatches (@input nvarchar(max), @pattern nvarchar(max)) 13 | RETURNS TABLE (Position int, Match NVARCHAR(max)) 14 | EXTERNAL NAME [RegexAssembly].[UDF].[Matches] 15 | go 16 | 17 | CREATE FUNCTION dbo.RegexSplit (@input nvarchar(max), @pattern nvarchar(max)) 18 | RETURNS TABLE (Position int, Match NVARCHAR(max)) 19 | EXTERNAL NAME [RegexAssembly].[UDF].[Split] 20 | go 21 | 22 | 23 | 24 | select * 25 | from dbo.RegexMatches('test test test','\w+') 26 | 27 | select * 28 | from dbo.RegexSplit('testtesttest','t') 29 | -------------------------------------------------------------------------------- /src/PostDeployScript.sql: -------------------------------------------------------------------------------- 1 |  -------------------------------------------------------------------------------- /src/PreDeployScript.sql: -------------------------------------------------------------------------------- 1 |  -------------------------------------------------------------------------------- /src/Properties/AssemblyInfo.cs: -------------------------------------------------------------------------------- 1 | using System.Reflection; 2 | using System.Runtime.CompilerServices; 3 | using System.Runtime.InteropServices; 4 | using System.Data.Sql; 5 | 6 | // General Information about an assembly is controlled through the following 7 | // set of attributes. Change these attribute values to modify the information 8 | // associated with an assembly. 9 | [assembly: AssemblyTitle("sqlregex")] 10 | [assembly: AssemblyDescription("")] 11 | [assembly: AssemblyConfiguration("")] 12 | [assembly: AssemblyCompany("")] 13 | [assembly: AssemblyProduct("sqlregex")] 14 | [assembly: AssemblyCopyright("Copyright © 2016")] 15 | [assembly: AssemblyTrademark("")] 16 | [assembly: AssemblyCulture("")] 17 | 18 | [assembly: ComVisible(false)] 19 | 20 | // 21 | // Version information for an assembly consists of the following four values: 22 | // 23 | // Major Version 24 | // Minor Version 25 | // Build Number 26 | // Revision 27 | // 28 | // You can specify all the values or you can default the Revision and Build Numbers 29 | // by using the '*' as shown below: 30 | [assembly: AssemblyVersion("1.0.*")] 31 | 32 | -------------------------------------------------------------------------------- /src/Regex.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using System.Data.SqlTypes; 3 | using Microsoft.SqlServer.Server; 4 | using System.Text.RegularExpressions; 5 | using System.Collections; 6 | using System.Collections.Generic; 7 | 8 | public partial class UDF 9 | { 10 | [Microsoft.SqlServer.Server.SqlFunction(IsDeterministic = true)] 11 | public static SqlString Match(String input, String pattern) 12 | { 13 | if (String.IsNullOrEmpty(input) || String.IsNullOrEmpty(pattern)) 14 | { 15 | return new SqlString(null); 16 | } 17 | else 18 | { 19 | Match m = Regex.Match(input, pattern); 20 | 21 | return new SqlString(m.Success ? m.Value : null); 22 | } 23 | } 24 | 25 | [Microsoft.SqlServer.Server.SqlFunction(IsDeterministic = true, IsPrecise = true)] 26 | public static SqlString GroupMatch(String input, String pattern, String group) 27 | { 28 | if (String.IsNullOrEmpty(input) || String.IsNullOrEmpty(pattern) || String.IsNullOrEmpty(group)) 29 | { 30 | return new SqlString(null); 31 | } 32 | else 33 | { 34 | Group g = Regex.Match(input, pattern).Groups[group]; 35 | 36 | return new SqlString(g.Success ? g.Value : null); 37 | } 38 | } 39 | 40 | [Microsoft.SqlServer.Server.SqlFunction(IsDeterministic = true, IsPrecise = true)] 41 | public static SqlString Replace(String input, String pattern, String replacement) 42 | { 43 | // the replacement string is not checked for an empty string because that is a valid replacement pattern 44 | if (String.IsNullOrEmpty(input) || String.IsNullOrEmpty(pattern) || replacement == null) 45 | { 46 | return new SqlString(null); 47 | } 48 | else 49 | { 50 | return new SqlString(Regex.Replace(input, pattern, replacement)); 51 | } 52 | } 53 | 54 | [SqlFunction(DataAccess = DataAccessKind.None, FillRowMethodName = "FillMatches", TableDefinition = "Position int, MatchText nvarchar(max)")] 55 | public static IEnumerable Matches(String input, String pattern) 56 | { 57 | List MatchCollection = new List(); 58 | if (!String.IsNullOrEmpty(input) && !String.IsNullOrEmpty(pattern)) 59 | { 60 | //only run through the matches if the inputs have non-empty, non-null strings 61 | foreach (Match m in Regex.Matches(input, pattern)) 62 | { 63 | MatchCollection.Add(new RegexMatch(m.Index, m.Value)); 64 | } 65 | } 66 | return MatchCollection; 67 | } 68 | 69 | [SqlFunction(DataAccess = DataAccessKind.None, FillRowMethodName = "FillMatches", TableDefinition = "Position int, MatchText nvarchar(max)")] 70 | public static IEnumerable Split(String input, String pattern) 71 | { 72 | List MatchCollection = new List(); 73 | if (!String.IsNullOrEmpty(input) && !String.IsNullOrEmpty(pattern)) 74 | { 75 | //only run through the splits if the inputs have non-empty, non-null strings 76 | String[] splits = Regex.Split(input, pattern); 77 | for (int i = 0; i < splits.Length; i++) 78 | { 79 | MatchCollection.Add(new RegexMatch(i, splits[i])); 80 | } 81 | } 82 | 83 | return MatchCollection; 84 | } 85 | 86 | public static void FillMatches(object match, out SqlInt32 Position, out SqlString MatchText) 87 | { 88 | RegexMatch rm = (RegexMatch)match; 89 | Position = rm.Position; 90 | MatchText = rm.MatchText; 91 | } 92 | 93 | private class RegexMatch 94 | { 95 | public SqlInt32 Position { get; set; } 96 | public SqlString MatchText { get; set; } 97 | 98 | public RegexMatch(SqlInt32 position, SqlString match) 99 | { 100 | this.Position = position; 101 | this.MatchText = match; 102 | } 103 | } 104 | }; 105 | 106 | -------------------------------------------------------------------------------- /src/SqlRegex.sln: -------------------------------------------------------------------------------- 1 |  2 | Microsoft Visual Studio Solution File, Format Version 12.00 3 | # Visual Studio 14 4 | VisualStudioVersion = 14.0.25420.1 5 | MinimumVisualStudioVersion = 10.0.40219.1 6 | Project("{00D1A9C2-B5F0-4AF3-8072-F6C62B433612}") = "sqlregex", "sqlregex.sqlproj", "{B6018D2C-B441-410F-8804-3A73FDCCEB6B}" 7 | EndProject 8 | Global 9 | GlobalSection(SolutionConfigurationPlatforms) = preSolution 10 | Debug|Any CPU = Debug|Any CPU 11 | Release|Any CPU = Release|Any CPU 12 | EndGlobalSection 13 | GlobalSection(ProjectConfigurationPlatforms) = postSolution 14 | {B6018D2C-B441-410F-8804-3A73FDCCEB6B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU 15 | {B6018D2C-B441-410F-8804-3A73FDCCEB6B}.Debug|Any CPU.Build.0 = Debug|Any CPU 16 | {B6018D2C-B441-410F-8804-3A73FDCCEB6B}.Debug|Any CPU.Deploy.0 = Debug|Any CPU 17 | {B6018D2C-B441-410F-8804-3A73FDCCEB6B}.Release|Any CPU.ActiveCfg = Release|Any CPU 18 | {B6018D2C-B441-410F-8804-3A73FDCCEB6B}.Release|Any CPU.Build.0 = Release|Any CPU 19 | {B6018D2C-B441-410F-8804-3A73FDCCEB6B}.Release|Any CPU.Deploy.0 = Release|Any CPU 20 | EndGlobalSection 21 | GlobalSection(SolutionProperties) = preSolution 22 | HideSolutionNode = FALSE 23 | EndGlobalSection 24 | EndGlobal 25 | -------------------------------------------------------------------------------- /src/Test Scripts/Test.sql: -------------------------------------------------------------------------------- 1 | -- Examples for queries that exercise different SQL objects implemented by this assembly 2 | 3 | ----------------------------------------------------------------------------------------- 4 | -- Stored procedure 5 | ----------------------------------------------------------------------------------------- 6 | -- exec StoredProcedureName 7 | 8 | 9 | ----------------------------------------------------------------------------------------- 10 | -- User defined function 11 | ----------------------------------------------------------------------------------------- 12 | -- select dbo.FunctionName() 13 | 14 | 15 | ----------------------------------------------------------------------------------------- 16 | -- User defined type 17 | ----------------------------------------------------------------------------------------- 18 | -- CREATE TABLE test_table (col1 UserType) 19 | -- 20 | -- INSERT INTO test_table VALUES (convert(uri, 'Instantiation String 1')) 21 | -- INSERT INTO test_table VALUES (convert(uri, 'Instantiation String 2')) 22 | -- INSERT INTO test_table VALUES (convert(uri, 'Instantiation String 3')) 23 | -- 24 | -- select col1::method1() from test_table 25 | 26 | 27 | 28 | ----------------------------------------------------------------------------------------- 29 | -- User defined type 30 | ----------------------------------------------------------------------------------------- 31 | -- select dbo.AggregateName(Column1) from Table1 32 | 33 | 34 | select 'To run your project, please edit the Test.sql file in your project. This file is located in the Test Scripts folder in the Solution Explorer.' 35 | -------------------------------------------------------------------------------- /src/sqlregex.sqlproj: -------------------------------------------------------------------------------- 1 |  2 | 3 | 4 | 5 | 11.0 6 | True 7 | 11.0 8 | 9 | 10 | 11 | 12 | True 13 | 14 | 15 | Debug 16 | AnyCPU 17 | 18 | 19 | 2.0 20 | Database 21 | false 22 | sql-server-regex 23 | v4.0 24 | 25 | 26 | 27 | 0 28 | D:\GitHub\sql-server-regex\dev\Backup\ 29 | 4.0 30 | Microsoft.Data.Tools.Schema.Sql.Sql130DatabaseSchemaProvider 31 | sqlregex 32 | 4.1 33 | {b6018d2c-b441-410f-8804-3a73fdcceb6b} 34 | False 35 | False 36 | False 37 | 1033,CI 38 | BySchemaAndSchemaType 39 | Properties 40 | dbo 41 | CS 42 | 43 | 44 | true 45 | full 46 | true 47 | bin\Debug\ 48 | false 49 | 50 | 51 | 4 52 | true 53 | AllRules.ruleset 54 | $(MSBuildProjectName).sql 55 | true 56 | true 57 | 58 | 59 | false 60 | true 61 | bin\Release\ 62 | false 63 | 64 | 65 | 4 66 | $(MSBuildProjectName).sql 67 | false 68 | true 69 | 70 | 71 | dev 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | Content 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 106 | -------------------------------------------------------------------------------- /test/perf-test-baseline.sql: -------------------------------------------------------------------------------- 1 | /* 2 | -- Performance test - baseline 3 | */ 4 | 5 | -- TEST 1: GENERATE THE ROWS INTO A TEMP TABLE 6 | if object_id('tempdb..#results') is not null 7 | begin 8 | exec ('drop table #results'); 9 | end 10 | go 11 | 12 | declare @StartTime datetime, @EndTime datetime 13 | 14 | set @StartTime = getdate(); 15 | 16 | ;WITH x AS 17 | ( 18 | SELECT TOP (1000) [object_id], name from sys.all_objects 19 | ) 20 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 21 | ,joint_name = x.name + y.name 22 | into #results 23 | FROM x CROSS JOIN x AS y ORDER BY n; 24 | 25 | set @EndTime = getdate(); 26 | 27 | drop table #results; 28 | 29 | select RunTimeInSec = datediff(ms, @StartTime,@EndTime) / 1000.0 30 | go 10 31 | 32 | 33 | 34 | 35 | -- TEST 2: USE THE T-SQL SUBSTRING FUNCTION 36 | if object_id('tempdb..#results') is not null 37 | begin 38 | exec ('drop table #results'); 39 | end 40 | go 41 | 42 | declare @StartTime datetime, @EndTime datetime 43 | 44 | set @StartTime = getdate(); 45 | 46 | ;WITH x AS 47 | ( 48 | SELECT TOP (1000) [object_id], name from sys.all_objects 49 | ) 50 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 51 | ,joint_name = SUBSTRING(x.name + y.name,1,LEN(x.name + y.name) - 2) 52 | into #results 53 | FROM x CROSS JOIN x AS y ORDER BY n; 54 | 55 | set @EndTime = getdate(); 56 | 57 | drop table #results; 58 | 59 | select RunTimeInSec = datediff(ms, @StartTime,@EndTime) / 1000.0 60 | go 10 -------------------------------------------------------------------------------- /test/perf-test-groupmatch.sql: -------------------------------------------------------------------------------- 1 | /* 2 | -- Performance test - RegexMatch() 3 | */ 4 | 5 | -- TEST 1: A SIMPLE REGEX MATCH 6 | if object_id('tempdb..#results') is not null 7 | begin 8 | exec ('drop table #results'); 9 | end 10 | go 11 | declare @StartTime datetime, @EndTime datetime 12 | 13 | set @StartTime = getdate(); 14 | 15 | ;WITH x AS 16 | ( 17 | SELECT TOP (1000) [object_id], name from sys.all_objects 18 | ) 19 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 20 | ,MatchedName = dbo.RegexGroupMatch(x.name + y.name,'(?\w{4})','firstfour') 21 | into #results 22 | FROM x CROSS JOIN x AS y ORDER BY n; 23 | 24 | set @EndTime = getdate(); 25 | 26 | drop table #results; 27 | 28 | select RunTimeInSec = datediff(ms, @StartTime,@EndTime) / 1000.0 29 | go 10 30 | 31 | 32 | 33 | -- TEST 2: A COMPLEX, SLOW REGEX MATCH 34 | if object_id('tempdb..#results') is not null 35 | begin 36 | exec ('drop table #results'); 37 | end 38 | go 39 | 40 | declare @StartTime datetime, @EndTime datetime 41 | 42 | set @StartTime = getdate(); 43 | 44 | ;WITH x AS 45 | ( 46 | SELECT TOP (1000) [object_id], name from sys.all_objects 47 | ) 48 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 49 | ,MatchedName = dbo.RegexGroupMatch(x.name + y.name,'(?(\w{4}\w?\w{1}))\S+','firstsix') 50 | into #results 51 | FROM x CROSS JOIN x AS y ORDER BY n; 52 | 53 | set @EndTime = getdate(); 54 | 55 | drop table #results; 56 | 57 | select RunTimeInSec = datediff(ms, @StartTime,@EndTime) / 1000.0 58 | go 10 59 | 60 | 61 | 62 | 63 | /* 64 | ;WITH x AS 65 | ( 66 | SELECT TOP (1000) [object_id], name from sys.all_objects 67 | ) 68 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 69 | --,x.name 70 | --,y.name 71 | ,MatchedName = dbo.RegexGroupMatch(x.name + y.name,'(?(\w{4}\w?\w{1}))\S+','firstfour') 72 | 73 | FROM x CROSS JOIN x AS y ORDER BY n; 74 | */ -------------------------------------------------------------------------------- /test/perf-test-match.sql: -------------------------------------------------------------------------------- 1 | /* 2 | -- Performance test - RegexMatch() 3 | */ 4 | 5 | -- TEST 1: A SIMPLE REGEX MATCH 6 | if object_id('tempdb..#results') is not null 7 | begin 8 | exec ('drop table #results'); 9 | end 10 | go 11 | 12 | declare @StartTime datetime, @EndTime datetime 13 | 14 | set @StartTime = getdate(); 15 | 16 | ;WITH x AS 17 | ( 18 | SELECT TOP (1000) [object_id], name from sys.all_objects 19 | ) 20 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 21 | ,MatchedName = dbo.RegexMatch(x.name + y.name,'\w{4}') 22 | into #results 23 | FROM x CROSS JOIN x AS y ORDER BY n; 24 | 25 | set @EndTime = getdate(); 26 | 27 | drop table #results; 28 | 29 | select RunTimeInSec = datediff(ms, @StartTime,@EndTime) / 1000.0 30 | go 10 31 | 32 | 33 | 34 | -- TEST 2: A SLOWER, COMPLICATED REGEX MATCH 35 | if object_id('tempdb..#results') is not null 36 | begin 37 | exec ('drop table #results'); 38 | end 39 | go 40 | 41 | declare @StartTime datetime, @EndTime datetime 42 | 43 | set @StartTime = getdate(); 44 | 45 | ;WITH x AS 46 | ( 47 | SELECT TOP (1000) [object_id], name from sys.all_objects 48 | ) 49 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 50 | ,MatchedName = dbo.RegexMatch(x.name + y.name,'(\w*)\1') 51 | into #results 52 | FROM x CROSS JOIN x AS y ORDER BY n; 53 | 54 | set @EndTime = getdate(); 55 | 56 | drop table #results; 57 | 58 | select RunTimeInSec = datediff(ms, @StartTime,@EndTime) / 1000.0 59 | go 10 60 | 61 | 62 | 63 | 64 | 65 | -- TEST 3: PASS A NULL PATTERN, CHECK THE INVOCATION TIME 66 | if object_id('tempdb..#results') is not null 67 | begin 68 | exec ('drop table #results'); 69 | end 70 | go 71 | 72 | declare @StartTime datetime, @EndTime datetime 73 | 74 | set @StartTime = getdate(); 75 | 76 | ;WITH x AS 77 | ( 78 | SELECT TOP (1000) [object_id], name from sys.all_objects 79 | ) 80 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 81 | ,MatchedName = isnull(dbo.RegexMatch(x.name + y.name,null),x.name + y.name) 82 | into #results 83 | FROM x CROSS JOIN x AS y ORDER BY n; 84 | 85 | set @EndTime = getdate(); 86 | 87 | drop table #results; 88 | 89 | select RunTimeInSec = datediff(ms, @StartTime,@EndTime) / 1000.0 90 | go 10 91 | -------------------------------------------------------------------------------- /test/perf-test-matches.sql: -------------------------------------------------------------------------------- 1 | /* 2 | -- Performance test - RegexMatches() 3 | */ 4 | 5 | -- TEST 1: A SIMPLE REGEX MATCHES 6 | if object_id('tempdb..#results') is not null 7 | begin 8 | exec ('drop table #results'); 9 | end 10 | go 11 | 12 | declare @StartTime datetime, @EndTime datetime 13 | 14 | set @StartTime = getdate(); 15 | 16 | ;WITH x AS 17 | ( 18 | SELECT TOP (1000) [object_id], name from sys.all_objects 19 | ), gen AS 20 | ( 21 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 22 | ,InputString = x.name + y.name 23 | FROM x CROSS JOIN x AS y 24 | ) 25 | 26 | SELECT 27 | g.n 28 | ,SplitCount = count(*) 29 | into #results 30 | FROM gen g 31 | CROSS APPLY dbo.RegexMatches(g.InputString, '\w{10}') as s --count all 4-character word sequences 32 | GROUP BY g.n 33 | 34 | set @EndTime = getdate(); 35 | 36 | drop table #results; 37 | 38 | select RunTimeInSec = datediff(ms, @StartTime,@EndTime) / 1000.0 39 | go 10 40 | 41 | 42 | 43 | -- TEST 2: A COMPLEX REGEX MATCHES 44 | if object_id('tempdb..#results') is not null 45 | begin 46 | exec ('drop table #results'); 47 | end 48 | go 49 | 50 | declare @StartTime datetime, @EndTime datetime 51 | 52 | set @StartTime = getdate(); 53 | 54 | ;WITH x AS 55 | ( 56 | SELECT TOP (1000) [object_id], name from sys.all_objects 57 | ), gen AS 58 | ( 59 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 60 | ,InputString = x.name + y.name 61 | FROM x CROSS JOIN x AS y 62 | ) 63 | 64 | SELECT 65 | g.n 66 | ,SplitCount = count(*) 67 | into #results 68 | FROM gen g 69 | CROSS APPLY dbo.RegexMatches(g.InputString, 's\w{4,6}') as s --the letter 's' followed by 4-6 letters 70 | GROUP BY g.n 71 | 72 | set @EndTime = getdate(); 73 | 74 | drop table #results; 75 | 76 | select RunTimeInSec = datediff(ms, @StartTime,@EndTime) / 1000.0 77 | go 10 78 | 79 | 80 | /* 81 | ;WITH x AS 82 | ( 83 | SELECT TOP (1000) [object_id], name from sys.all_objects 84 | ) 85 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 86 | --,x.name 87 | --,y.name 88 | ,MatchedName = dbo.RegexMatch(x.name + y.name,'\w{4}') 89 | 90 | FROM x CROSS JOIN x AS y ORDER BY n; 91 | */ -------------------------------------------------------------------------------- /test/perf-test-replace.sql: -------------------------------------------------------------------------------- 1 | /* 2 | -- Performance test - RegexReplace() 3 | */ 4 | 5 | -- TEST 1: A SIMPLE REGEX MATCH 6 | if object_id('tempdb..#results') is not null 7 | begin 8 | exec ('drop table #results'); 9 | end 10 | go 11 | 12 | 13 | declare @StartTime datetime, @EndTime datetime 14 | 15 | set @StartTime = getdate(); 16 | 17 | ;WITH x AS 18 | ( 19 | SELECT TOP (1000) [object_id], name from sys.all_objects 20 | ) 21 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 22 | ,MatchedName = dbo.RegexReplace(x.name + y.name,'(\w{5})(\w{2})','$2__$1') 23 | into #results 24 | FROM x CROSS JOIN x AS y ORDER BY n; 25 | 26 | set @EndTime = getdate(); 27 | 28 | drop table #results; 29 | 30 | select RunTimeInSec = datediff(ms, @StartTime,@EndTime) / 1000.0 31 | go 10 32 | 33 | 34 | 35 | -- TEST 2: A COMPLEX REGEX MATCH 36 | if object_id('tempdb..#results') is not null 37 | begin 38 | exec ('drop table #results'); 39 | end 40 | go 41 | 42 | declare @StartTime datetime, @EndTime datetime 43 | 44 | set @StartTime = getdate(); 45 | 46 | ;WITH x AS 47 | ( 48 | SELECT TOP (1000) [object_id], name from sys.all_objects 49 | ) 50 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 51 | ,MatchedName = dbo.RegexReplace(x.name + y.name,'(\w{5})(\w{2})(\S+)','$2__$1__$3') 52 | into #results 53 | FROM x CROSS JOIN x AS y ORDER BY n; 54 | 55 | set @EndTime = getdate(); 56 | 57 | drop table #results; 58 | 59 | select RunTimeInSec = datediff(ms, @StartTime,@EndTime) / 1000.0 60 | go 10 61 | 62 | 63 | 64 | 65 | /* 66 | ;WITH x AS 67 | ( 68 | SELECT TOP (1000) [object_id], name from sys.all_objects 69 | ) 70 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 71 | --,x.name 72 | --,y.name 73 | ,OriginalName = x.name + y.name 74 | ,MatchedName = dbo.RegexReplace(x.name + y.name,'(\w{5})(\w+)','$2__$1') 75 | 76 | FROM x CROSS JOIN x AS y ORDER BY n; 77 | */ -------------------------------------------------------------------------------- /test/perf-test-split.sql: -------------------------------------------------------------------------------- 1 | /* 2 | -- Performance test - RegexSplit() 3 | */ 4 | 5 | -- TEST 1: A SIMPLE REGEX SPLIT 6 | if object_id('tempdb..#results') is not null 7 | begin 8 | exec ('drop table #results'); 9 | end 10 | go 11 | 12 | declare @StartTime datetime, @EndTime datetime 13 | 14 | set @StartTime = getdate(); 15 | 16 | ;WITH x AS 17 | ( 18 | SELECT TOP (1000) [object_id], name from sys.all_objects 19 | ), gen AS 20 | ( 21 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 22 | ,InputString = x.name + y.name 23 | FROM x CROSS JOIN x AS y 24 | ) 25 | 26 | SELECT 27 | g.n 28 | ,SplitCount = count(*) 29 | into #results 30 | FROM gen g 31 | CROSS APPLY dbo.RegexSplit(g.InputString, 's') as s --split on the 's' character 32 | GROUP BY g.n 33 | 34 | set @EndTime = getdate(); 35 | 36 | drop table #results; 37 | 38 | select RunTimeInSec = datediff(ms, @StartTime,@EndTime) / 1000.0 39 | go 10 40 | 41 | 42 | 43 | -- TEST 2: A COMPLEX REGEX SPLIT 44 | if object_id('tempdb..#results') is not null 45 | begin 46 | exec ('drop table #results'); 47 | end 48 | go 49 | 50 | declare @StartTime datetime, @EndTime datetime 51 | 52 | set @StartTime = getdate(); 53 | 54 | ;WITH x AS 55 | ( 56 | SELECT TOP (1000) [object_id], name from sys.all_objects 57 | ), gen AS 58 | ( 59 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 60 | ,InputString = x.name + y.name 61 | FROM x CROSS JOIN x AS y 62 | ) 63 | 64 | SELECT 65 | g.n 66 | ,SplitCount = count(*) 67 | into #results 68 | FROM gen g 69 | CROSS APPLY dbo.RegexSplit(g.InputString, 's\W|s\w{10}') as s --split on the 's' character 70 | GROUP BY g.n 71 | 72 | set @EndTime = getdate(); 73 | 74 | drop table #results; 75 | 76 | select RunTimeInSec = datediff(ms, @StartTime,@EndTime) / 1000.0 77 | go 10 78 | 79 | 80 | 81 | /* 82 | ;WITH x AS 83 | ( 84 | SELECT TOP (1000) [object_id], name from sys.all_objects 85 | ) 86 | SELECT n = ROW_NUMBER() OVER (ORDER BY x.[object_id]) 87 | --,x.name 88 | --,y.name 89 | ,MatchedName = dbo.RegexMatch(x.name + y.name,'\w{4}') 90 | 91 | FROM x CROSS JOIN x AS y ORDER BY n; 92 | */ -------------------------------------------------------------------------------- /test/perf-tests.md: -------------------------------------------------------------------------------- 1 | # Performance Tests 2 | 3 | There are several performance tests for each of the functions. 4 | 5 | ## Baseline Performance 6 | 7 | The performance tests are against a dataset of a million rows, [generated from sys.all_objects](https://sqlperformance.com/2013/01/t-sql-queries/generate-a-set-1). 8 | 9 | ## Performance Test Results 10 | 11 | These are the performance test results from my development machine, a Windows 7 desktop with a 4-core Skylake CPU and 32GB of RAM. 12 | 13 | Each test is run 10 times, and you're seeing the average runtime. You can also look at the [raw data](https://docs.google.com/spreadsheets/d/11Neu6wHXZSA50S2lEt7h4koXZFPSrdnvB4CVKEmbKpw/edit?usp=sharing) if you're interested. 14 | 15 | 16 | | Test Category | Simple | Complex | Null | 17 | | ------------- |:------:| :------:| ----:| 18 | | Baseline | 0.49 | 0.62 | N/A | 19 | | Match | 9.01 | 12.57 | 5.33 | 20 | | GroupMatch | 17.54 | 20.79 | | 21 | | Matches | 28.09 | 22.14 | | 22 | | Replace | 22.96 | 21.10 | | 23 | | Split | 28.00 | 23.84 | | 24 | 25 | **Analysis** 26 | 27 | The SQL CLR functions are *slow*. Even calling the simplest function with a null value, RegexMatch(), takes ~10 times longer than the baseline query, 5 seconds vs .5 seconds. Relatively simple regular expressions are slow. 28 | 29 | I noticed that one of the cores on my computer was consistently pegged at 100%, suggesting that the limitation was CPU. That makes sense; both the CLR and regular expressions are relatively CPU heavy. 30 | 31 | *Update, 2017-01-21* - Using static methods in the Regex() class boosts performance, up to 35% in some cases. 32 | 33 | ## Performance Tests 34 | 35 | There are 6 perf test scripts, one per function, plus a 'baseline' script. 36 | 37 | 38 | * [Baseline](/test/perf-test-baseline.sql) 39 | * [Match](/test/perf-test-match.sql) 40 | * [Matches](/test/perf-test-matches.sql) 41 | * [GroupMatch](/test/perf-test-groupmatch.sql) 42 | * [Split](/test/perf-test-split.sql) 43 | * [Replace](/test/perf-test-replace.sql) 44 | 45 | 46 | ## Running the Tests 47 | 48 | **Test Setup** 49 | 50 | To run these tests, you'll need to have sql-server-regex installed onto a SQL Server database. 51 | 52 | **Running a Test** 53 | 54 | * Open a SQL file for a test (for example, 'perf-test-match.sql') 55 | * The top of the script has the runtime on my development machine (a desktop with a 4-core Skylake CPU and 16GB RAM). 56 | * Run the script 57 | * Each test should run 10 times, and return the runtime of each. 58 | * If any of the tests error, then something is broken/failing. -------------------------------------------------------------------------------- /test/unit-test-groupmatch.sql: -------------------------------------------------------------------------------- 1 | /* 2 | -- Unit tests for the dbo.RegexGroupMatch() function 3 | 4 | See unit-tests.md for a list of expected behaviors 5 | */ 6 | 7 | 8 | 9 | -- UNIT TEST: Match one entry 10 | ; with test as 11 | ( 12 | select dbo.RegexGroupMatch('testme space','\w+\s+(?\w+)','secondword') as TestResult 13 | ) 14 | 15 | select StatusMessage = case when TestResult = 'space' then 'Success' else 'Failure' end 16 | ,TestResult 17 | ,ExpectedTestResult = 'space' 18 | from test 19 | go 20 | 21 | -- UNIT TEST: Match no entries 22 | ; with test as 23 | ( 24 | select dbo.RegexGroupMatch('testme space','\w+\s+(?ddd)','secondword') as TestResult 25 | ) 26 | 27 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 28 | ,TestResult 29 | ,ExpectedTestResult = null 30 | from test 31 | go 32 | 33 | -- UNIT TEST: Invalid group name 34 | ; with test as 35 | ( 36 | select dbo.RegexGroupMatch('testme space','\w+\s+(?ddd)', 'thirdword') as TestResult 37 | ) 38 | 39 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 40 | ,TestResult 41 | ,ExpectedTestResult = null 42 | from test 43 | go 44 | 45 | -- UNIT TEST: Null string input 46 | ; with test as 47 | ( 48 | select dbo.RegexGroupMatch(null,'\w', 'secondword') as TestResult 49 | ) 50 | 51 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 52 | ,TestResult 53 | ,ExpectedTestResult = null 54 | from test 55 | go 56 | 57 | -- UNIT TEST: Null pattern input 58 | ; with test as 59 | ( 60 | select dbo.RegexGroupMatch('testme space',null, 'secondword') as TestResult 61 | ) 62 | 63 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 64 | ,TestResult 65 | ,ExpectedTestResult = null 66 | from test 67 | go 68 | 69 | -- UNIT TEST: Null group input 70 | ; with test as 71 | ( 72 | select dbo.RegexGroupMatch('testme space','\w', null) as TestResult 73 | ) 74 | 75 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 76 | ,TestResult 77 | ,ExpectedTestResult = null 78 | from test 79 | go 80 | 81 | 82 | -- UNIT TEST: All inputs are null 83 | ; with test as 84 | ( 85 | select dbo.RegexGroupMatch(null,null, null) as TestResult 86 | ) 87 | 88 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 89 | ,TestResult 90 | ,ExpectedTestResult = null 91 | from test 92 | go 93 | 94 | -- UNIT TEST: Illegal regular expression 95 | ; with test as 96 | ( 97 | select dbo.RegexGroupMatch('testme space','$$^', 'secondword') as TestResult 98 | ) 99 | 100 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 101 | ,TestResult 102 | ,ExpectedTestResult = null 103 | from test 104 | go 105 | 106 | -- UNIT TEST: Wrong input types (numbers, guids, etc) 107 | ; with test as 108 | ( 109 | select dbo.RegexGroupMatch(1334873,'(?\d{3})', 'numbers') as TestResult 110 | ) 111 | 112 | select StatusMessage = case when TestResult = 133 then 'Success' else 'Failure' end 113 | ,TestResult 114 | ,ExpectedTestResult = 133 115 | from test 116 | go 117 | 118 | 119 | -------------------------------------------------------------------------------- /test/unit-test-match.sql: -------------------------------------------------------------------------------- 1 | /* 2 | -- Unit tests for the dbo.RegexMatch() function 3 | 4 | See unit-tests.md for a list of expected behaviors 5 | */ 6 | 7 | 8 | 9 | -- UNIT TEST: Match one entry 10 | ; with test as 11 | ( 12 | select dbo.RegexMatch('testme space','\w+') as TestResult 13 | ) 14 | 15 | select StatusMessage = case when TestResult = 'testme' then 'Success' else 'Failure' end 16 | ,TestResult 17 | ,ExpectedTestResult = 'testme' 18 | from test 19 | go 20 | 21 | -- UNIT TEST: Match no entries 22 | ; with test as 23 | ( 24 | select dbo.RegexMatch('testme space','ddd') as TestResult 25 | ) 26 | 27 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 28 | ,TestResult 29 | ,ExpectedTestResult = null 30 | from test 31 | go 32 | 33 | -- UNIT TEST: Match multiple entries 34 | ; with test as 35 | ( 36 | select dbo.RegexMatch('testme space','\w') as TestResult 37 | ) 38 | 39 | select StatusMessage = case when TestResult = 't' then 'Success' else 'Failure' end 40 | ,TestResult 41 | ,ExpectedTestResult = 't' --the first character 42 | from test 43 | go 44 | 45 | -- UNIT TEST: Null string input 46 | ; with test as 47 | ( 48 | select dbo.RegexMatch(null,'\w') as TestResult 49 | ) 50 | 51 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 52 | ,TestResult 53 | ,ExpectedTestResult = null 54 | from test 55 | go 56 | 57 | -- UNIT TEST: Null pattern input 58 | ; with test as 59 | ( 60 | select dbo.RegexMatch('testme space',null) as TestResult 61 | ) 62 | 63 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 64 | ,TestResult 65 | ,ExpectedTestResult = null 66 | from test 67 | go 68 | 69 | -- UNIT TEST: Both inputs are null 70 | ; with test as 71 | ( 72 | select dbo.RegexMatch(null,null) as TestResult 73 | ) 74 | 75 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 76 | ,TestResult 77 | ,ExpectedTestResult = null 78 | from test 79 | go 80 | 81 | -- UNIT TEST: Illegal regular expression 82 | ; with test as 83 | ( 84 | select dbo.RegexMatch('testme space','$^') as TestResult 85 | ) 86 | 87 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 88 | ,TestResult 89 | ,ExpectedTestResult = null 90 | from test 91 | go 92 | 93 | -- UNIT TEST: Wrong input types (numbers, guids, etc) 94 | ; with test as 95 | ( 96 | select dbo.RegexMatch(1334873,'\d{3}') as TestResult 97 | ) 98 | 99 | select StatusMessage = case when TestResult = '133' then 'Success' else 'Failure' end 100 | ,TestResult 101 | ,ExpectedTestResult = 133 102 | from test 103 | go 104 | 105 | 106 | -------------------------------------------------------------------------------- /test/unit-test-matches.sql: -------------------------------------------------------------------------------- 1 | /* 2 | -- Unit tests for the dbo.RegexMatches() function 3 | 4 | See unit-tests.md for a list of expected behaviors 5 | */ 6 | 7 | 8 | 9 | -- UNIT TEST: Match one entry 10 | ; with test as 11 | ( 12 | select Position 13 | ,Match = replace(replace(Match, '',''),'','') 14 | from dbo.RegexMatches('The HTML is one', '<([A-Z][A-Z0-9]*)\b[^>]*>(.*?)') 15 | ) 16 | 17 | select StatusMessage = case when Match in ('one') then 'Success' else 'Failure' end 18 | ,Match 19 | ,ExpectedTestResult = 'one' 20 | from test 21 | go 22 | 23 | -- UNIT TEST: Match multiple entries 24 | ; with test as 25 | ( 26 | select Position 27 | ,Match = replace(replace(Match, '',''),'','') 28 | from dbo.RegexMatches('The HTML is onetwo', '<([A-Z][A-Z0-9]*)\b[^>]*>(.*?)') 29 | ) 30 | 31 | select StatusMessage = case when Match in ('one','two') then 'Success' else 'Failure' end 32 | ,Match 33 | ,ExpectedTestResult = 'one or two' 34 | from test 35 | go 36 | 37 | -- UNIT TEST: Match no entries 38 | ; with test as 39 | ( 40 | select Position 41 | ,Match 42 | from dbo.RegexMatches('The HTML is one two ', '<([A-Z][A-Z0-9]*)\b[^>]*>(.*?)') 43 | ) 44 | 45 | select StatusMessage = case when count(*) = 0 then 'Success' else 'Failure' end 46 | ,MatchCount = count(*) 47 | ,ExpectedTestResult = '0 Rows Returned' 48 | from test 49 | go 50 | 51 | 52 | 53 | -- UNIT TEST: Null string input 54 | ; with test as 55 | ( 56 | select Position 57 | ,Match 58 | from dbo.RegexMatches(null, '<([A-Z][A-Z0-9]*)\b[^>]*>(.*?)') 59 | ) 60 | 61 | select StatusMessage = case when count(*) = 0 then 'Success' else 'Failure' end 62 | ,MatchCount = count(*) 63 | ,ExpectedTestResult = '0 Rows Returned' 64 | from test 65 | go 66 | 67 | 68 | 69 | 70 | 71 | 72 | -- UNIT TEST: Null pattern input 73 | ; with test as 74 | ( 75 | select Position 76 | ,Match 77 | from dbo.RegexMatches('The HTML is onetwo', null) 78 | ) 79 | 80 | select StatusMessage = case when count(*) = 0 then 'Success' else 'Failure' end 81 | ,MatchCount = count(*) 82 | ,ExpectedTestResult = '0 Rows Returned' 83 | from test 84 | go 85 | 86 | -- UNIT TEST: Both inputs are null 87 | ; with test as 88 | ( 89 | select Position 90 | ,Match 91 | from dbo.RegexMatches(null, null) 92 | ) 93 | 94 | select StatusMessage = case when count(*) = 0 then 'Success' else 'Failure' end 95 | ,MatchCount = count(*) 96 | ,ExpectedTestResult = '0 Rows Returned' 97 | from test 98 | go 99 | 100 | -- UNIT TEST: Illegal regular expression 101 | ; with test as 102 | ( 103 | select Position 104 | ,Match 105 | from dbo.RegexMatches('The HTML is onetwo', '$^') 106 | ) 107 | 108 | select StatusMessage = case when count(*) = 0 then 'Success' else 'Failure' end 109 | ,MatchCount = count(*) 110 | ,ExpectedTestResult = '0 Rows Returned' 111 | from test 112 | go 113 | 114 | 115 | -- UNIT TEST: Wrong input types (numbers, guids, etc) 116 | ; with test as 117 | ( 118 | select Position 119 | ,Match 120 | from dbo.RegexMatches(123456, '\d') 121 | ) 122 | 123 | select StatusMessage = case when Match in (1,2,3,4,5,6) then 'Success' else 'Failure' end 124 | ,Match 125 | ,ExpectedTestResult = '1 2 3 4 5 or 6' 126 | from test 127 | go -------------------------------------------------------------------------------- /test/unit-test-replace.sql: -------------------------------------------------------------------------------- 1 | /* 2 | -- Unit tests for the dbo.RegexReplace() function 3 | 4 | See unit-tests.md for a list of expected behaviors 5 | */ 6 | 7 | 8 | 9 | -- UNIT TEST: Match one entry 10 | ; with test as 11 | ( 12 | select dbo.RegexReplace('Hello, my name is John Doe', 'my name is (.+)', 'my name is not $1') as TestResult 13 | ) 14 | 15 | select StatusMessage = case when TestResult = 'Hello, my name is not John Doe' then 'Success' else 'Failure' end 16 | ,TestResult 17 | ,ExpectedTestResult = 'space' 18 | from test 19 | go 20 | 21 | -- UNIT TEST: Match no entries 22 | ; with test as 23 | ( 24 | select dbo.RegexReplace('testme space','\w+\s+ddd','foo') as TestResult 25 | ) 26 | 27 | select StatusMessage = case when TestResult = 'testme space' then 'Success' else 'Failure' end 28 | ,TestResult 29 | ,ExpectedTestResult = 'testme space' 30 | from test 31 | go 32 | 33 | -- UNIT TEST: Match multiple entries 34 | ; with test as 35 | ( 36 | select dbo.RegexReplace('Hello, my name is John Doe', 'my name is (\w+)\s*(\w+)', 'my name is not $1 or $2') as TestResult 37 | ) 38 | 39 | select StatusMessage = case when TestResult = 'Hello, my name is not John or Doe' then 'Success' else 'Failure' end 40 | ,TestResult 41 | ,ExpectedTestResult = 'Hello, my name is not John or Doe' 42 | from test 43 | go 44 | 45 | -- UNIT TEST: Null string input 46 | ; with test as 47 | ( 48 | select dbo.RegexReplace(null,'\w', 'secondword') as TestResult 49 | ) 50 | 51 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 52 | ,TestResult 53 | ,ExpectedTestResult = null 54 | from test 55 | go 56 | 57 | -- UNIT TEST: Null pattern input 58 | ; with test as 59 | ( 60 | select dbo.RegexReplace('testme space',null, 'secondword') as TestResult 61 | ) 62 | 63 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 64 | ,TestResult 65 | ,ExpectedTestResult = null 66 | from test 67 | go 68 | 69 | -- UNIT TEST: Null replacement input 70 | ; with test as 71 | ( 72 | select dbo.RegexReplace('testme space','\w', null) as TestResult 73 | ) 74 | 75 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 76 | ,TestResult 77 | ,ExpectedTestResult = null 78 | from test 79 | go 80 | 81 | 82 | -- UNIT TEST: All inputs are null 83 | ; with test as 84 | ( 85 | select dbo.RegexReplace(null,null, null) as TestResult 86 | ) 87 | 88 | select StatusMessage = case when TestResult is null then 'Success' else 'Failure' end 89 | ,TestResult 90 | ,ExpectedTestResult = null 91 | from test 92 | go 93 | 94 | -- UNIT TEST: Illegal regular expression 95 | ; with test as 96 | ( 97 | select dbo.RegexReplace('testme space','$$^', 'secondword') as TestResult 98 | ) 99 | 100 | select StatusMessage = case when TestResult = 'testme space' then 'Success' else 'Failure' end 101 | ,TestResult 102 | ,ExpectedTestResult = 'testme space' 103 | from test 104 | go 105 | 106 | -- UNIT TEST: Wrong input types (numbers, guids, etc) 107 | ; with test as 108 | ( 109 | select dbo.RegexReplace(1334873,'(\d+)', 'The numbers matched were $1') as TestResult 110 | ) 111 | 112 | select StatusMessage = case when TestResult = 'The numbers matched were 1334873' then 'Success' else 'Failure' end 113 | ,TestResult 114 | ,ExpectedTestResult = 'The numbers matched were 1334873' 115 | from test 116 | go 117 | 118 | 119 | -------------------------------------------------------------------------------- /test/unit-test-split.sql: -------------------------------------------------------------------------------- 1 | /* 2 | -- Unit tests for the dbo.RegexSplit() function 3 | 4 | See unit-tests.md for a list of expected behaviors 5 | */ 6 | 7 | 8 | 9 | -- UNIT TEST: Match one entry 10 | ; with test as 11 | ( 12 | select Position 13 | ,Match 14 | from dbo.RegexSplit('Split', '\s+') 15 | ) 16 | 17 | select StatusMessage = case when Match in ('Split','once') then 'Success' else 'Failure' end 18 | ,Match 19 | ,ExpectedTestResult = '''Split'' or ''once''' 20 | from test 21 | go 22 | 23 | -- UNIT TEST: Match multiple entries 24 | ; with test as 25 | ( 26 | select Position 27 | ,Match 28 | from dbo.RegexSplit('Can this split into multiple words?', '\s+') 29 | ) 30 | 31 | select StatusMessage = case when Match in ('Can','this','split','into','multiple','words?') then 'Success' else 'Failure' end 32 | ,Match 33 | ,ExpectedTestResult = 'One of these words: Can this split into multiple words?' 34 | from test 35 | go 36 | 37 | -- UNIT TEST: Match no entries 38 | ; with test as 39 | ( 40 | select Position 41 | ,Match 42 | from dbo.RegexSplit('Split words', 'ddd') 43 | ) 44 | 45 | select StatusMessage = case when Match = 'Split words' then 'Success' else 'Failure' end 46 | ,Match 47 | ,ExpectedTestResult = 'Split words' 48 | from test 49 | go 50 | 51 | 52 | 53 | -- UNIT TEST: Null string input 54 | ; with test as 55 | ( 56 | select Position 57 | ,Match 58 | from dbo.RegexSplit(null, '\s+') 59 | ) 60 | 61 | select StatusMessage = case when count(*) = 0 then 'Success' else 'Failure' end 62 | ,MatchCount = count(*) 63 | ,ExpectedTestResult = '0 Rows Returned' 64 | from test 65 | go 66 | 67 | 68 | 69 | 70 | 71 | 72 | -- UNIT TEST: Null pattern input 73 | ; with test as 74 | ( 75 | select Position 76 | ,Match 77 | from dbo.RegexSplit('Split all the words!', null) 78 | ) 79 | 80 | select StatusMessage = case when count(*) = 0 then 'Success' else 'Failure' end 81 | ,MatchCount = count(*) 82 | ,ExpectedTestResult = '0 Rows Returned' 83 | from test 84 | go 85 | 86 | -- UNIT TEST: Both inputs are null 87 | ; with test as 88 | ( 89 | select Position 90 | ,Match 91 | from dbo.RegexSplit(null, null) 92 | ) 93 | 94 | select StatusMessage = case when count(*) = 0 then 'Success' else 'Failure' end 95 | ,MatchCount = count(*) 96 | ,ExpectedTestResult = '0 Rows Returned' 97 | from test 98 | go 99 | 100 | -- UNIT TEST: Illegal regular expression 101 | ; with test as 102 | ( 103 | select Position 104 | ,Match 105 | from dbo.RegexSplit('Split lots of words!', '$^') 106 | ) 107 | 108 | select StatusMessage = case when Match = 'Split lots of words!' then 'Success' else 'Failure' end 109 | ,Match 110 | ,ExpectedTestResult = 'Split lots of words!' 111 | from test 112 | go 113 | 114 | 115 | -- UNIT TEST: Wrong input types (numbers, guids, etc) 116 | ; with test as 117 | ( 118 | select Position 119 | ,Match 120 | from dbo.RegexSplit(cast('7A9A986F-AD7B-4BB2-93B4-351A422B89A8' as uniqueidentifier), '-') 121 | ) 122 | 123 | select StatusMessage = case when Match in ('7A9A986F','AD7B','4BB2','93B4','351A422B89A8') then 'Success' else 'Failure' end 124 | ,Match 125 | ,ExpectedTestResult = 'One of the chunks of this GUID: 7A9A986F-AD7B-4BB2-93B4-351A422B89A8' 126 | from test 127 | go 128 | -------------------------------------------------------------------------------- /test/unit-tests.md: -------------------------------------------------------------------------------- 1 | # Unit Tests 2 | 3 | 4 | ## Expected Behavior 5 | 6 | * If any of the inputs are null, the output is null 7 | * If given an invalid regular expression, the function returns null 8 | * If a match() style function (Match, GroupMatch, Matches) has no matches, it returns null 9 | * If the Replace() function doesn't match anything to replace, it returns the original string (this is how Find-and-Replace works everywhere else, such as in a text editor) 10 | * If the Split() function can't match anything to split on, it returns the entire original string. This is how split functions work in a text editor 11 | 12 | 13 | ## Tests 14 | 15 | There are 5 unit test scripts, one per function. There are several unit tests in each. 16 | 17 | 18 | * [Match](/test/unit-test-match.sql) 19 | * [Matches](/test/unit-test-matches.sql) 20 | * [GroupMatch](/test/unit-test-groupmatch.sql) 21 | * [Split](/test/unit-test-split.sql) 22 | * [Replace](/test/unit-test-replace.sql) 23 | 24 | 25 | ## Running the Tests 26 | 27 | **Test Setup** 28 | 29 | To run these tests, you'll need to have sql-server-regex installed onto a SQL Server database. 30 | 31 | **Running a Test** 32 | 33 | * Open a SQL file for a test (for example, 'unit-test-match.sql') 34 | * Run the script 35 | * Each test should return 'Success' or 'Failure' 36 | * If any of the tests error, or return no results, then something is broken/failing. --------------------------------------------------------------------------------