├── Basic Aggregate Functions
    └── Easy
    │   └── 620. Not Boring Movies.java
├── Basic Joins
    └── Easy
    │   └── 1378. Replace Employee ID With The Unique Identifier.java
├── README.md
└── Select
    └── Easy
        ├── 1148. Article Views I.sql
        ├── 1683. Invalid Tweets.sql
        ├── 1757. Recyclable and Low Fat Products.sql
        ├── 584. Find Customer Referee.sql
        └── 595. Big Countries.sql


/Basic Aggregate Functions/Easy/620. Not Boring Movies.java:
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1 | # Write your MySQL query statement below
2 | SELECT *
3 | From Cinema
4 | WHERE mod(id,2)=1 AND description !='boring'
5 | ORDER BY rating DESC;
6 | 


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/Basic Joins/Easy/1378. Replace Employee ID With The Unique Identifier.java:
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1 | # Write your MySQL query statement below
2 | SELECT e2.unique_id,e1.name
3 | FROM Employees e1
4 | LEFT JOIN EmployeeUNI e2
5 | ON e1.id=e2.id;
6 | 


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/README.md:
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1 | # SQL-Problems


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/Select/Easy/1148. Article Views I.sql:
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1 | # Write your MySQL query statement below
2 | SELECT DISTINCT author_id AS id
3 | FROM Views
4 | WHERE author_id = viewer_id 
5 | ORDER BY author_id;
6 | 


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/Select/Easy/1683. Invalid Tweets.sql:
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1 | # Write your MySQL query statement below
2 | SELECT tweet_id
3 | FROM Tweets
4 | WHERE CHAR_LENGTH(content) >15;
5 | 


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/Select/Easy/1757. Recyclable and Low Fat Products.sql:
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1 | # Write your MySQL query statement below
2 | select product_id 
3 | from Products
4 | where low_fats= 'Y' and recyclable ='Y';
5 | 


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/Select/Easy/584. Find Customer Referee.sql:
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1 | # Write your MySQL query statement below
2 | SELECT name
3 | FROM Customer
4 | WHERE referee_id!=2 OR referee_id is null;
5 | 


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/Select/Easy/595. Big Countries.sql:
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1 | # Write your MySQL query statement below
2 | SELECT name, population , area
3 | FROM World
4 | WHERE area >=3000000 OR population >= 25000000; 
5 | 


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