└── database.py


/database.py:
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 1 | import mysql.connector
 2 | 
 3 | #SET MYSQL CONNECTION
 4 | mydb = mysql.connector.connect(
 5 | 	host = "localhost",
 6 | 	user = "root",
 7 | 	passwd = "password123",
 8 | 	database = "testdb",
 9 | 	)
10 | 
11 | #CREATE CURSOR INSTANCE
12 | my_cursor = mydb.cursor()
13 | 
14 | #CREATE DATABASE
15 | my_cursor.execute("CREATE DATABASE testdb")
16 | 
17 | #SHOW DATABASE
18 | my_cursor.execute("SHOW DATABASES")
19 | 
20 | #CREATE TABLE
21 | my_cursor.execute("CREATE TABLE users (name VARCHAR(255), email VARCHAR(255), age INTEGER(10), user_id INTEGER AUTO_INCREMENT PRIMARY KEY)")
22 | my_cursor.execute("SHOW TABLES")
23 | 
24 | #INSERT ONE RECORD
25 | sqlStuff = "INSERT INTO users (name, email, age) VALUES (%s, %s, %s)"
26 | record1 = ("John", "john@codemy.com", 40)
27 | my_cursor.execute(sqlStuff, record1)
28 | mydb.commit()
29 | 
30 | #INSERT MULTIPLE RECORDS
31 | sqlStuff = "INSERT INTO users (name, email, age) VALUES (%s, %s, %s)"
32 | records = [("Tim", "tim@tim.com", 32),
33 | 	("Mary", "Mary@mary.com", 21),
34 | 	("Steve", "steve@steveEmail.com", 57),
35 | 	("Tina", "tina@somethingellse.com", 29),]
36 | my_cursor.executemany(sqlStuff, records)
37 | mydb.commit()
38 | 
39 | #PULL DATA FROM THE TABLE
40 | my_cursor.execute("SELECT * FROM users")
41 | result = my_cursor.fetchall()
42 | print("NAME\tEMAIL\t\t\tAGE\tID")
43 | print("----\t-----\t\t\t---\t---")
44 | for row in result:
45 | 	print(row[0] + "\t%s" %row[1] + "\t\t%s" %row[2] + "\t%s" %row[3])
46 | 
47 | #WHERE CLAUSE
48 | my_cursor.execute("SELECT * FROM users WHERE name =  'John'")
49 | result = my_cursor.fetchall()
50 | for row in result:
51 | 	print(row)
52 | 
53 | #WHERE and LIKE WILDCARDS
54 | my_cursor.execute("SELECT * FROM users WHERE name LIKE '%i%'")
55 | result = my_cursor.fetchall()
56 | for row in result:
57 | 	print(row)
58 | 
59 | # AND / OR Clause
60 | my_cursor.execute("SELECT * FROM users WHERE name LIKE '%i%' AND age = 29 AND user_id = 5")
61 | result = my_cursor.fetchall()
62 | for row in result:
63 | 	print(row)
64 | 
65 | #UPDATING RECORDS
66 | my_sql = "UPDATE users SET name = 'Johnny' WHERE user_id = 6"
67 | my_cursor.execute(my_sql)
68 | mydb.commit()
69 | 
70 | #LIMIT RESULTS
71 | my_cursor.execute("SELECT * FROM users LIMIT 3 OFFSET 1")
72 | result = my_cursor.fetchall()
73 | for row in result:
74 | 	print(row)
75 | 
76 | #ORDERING RESULTS
77 | my_cursor.execute("SELECT * FROM users ORDER BY age DESC")
78 | result = my_cursor.fetchall()
79 | for row in result:
80 | 	print(row)
81 | 
82 | #DELETE RECORDS
83 | my_sql = "DELETE FROM users WHERE name  = 'John'"
84 | my_cursor.execute(my_sql)
85 | mydb.commit()
86 | 
87 | # DELETE DROP TABLE
88 | my_sql = "DROP TABLE IF EXISTS users"
89 | my_cursor.execute(my_sql)
90 | 


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