Use Python to operate MySQL Databases and pythonmysql Databases

Use Python to operate MySQL Databases and pythonmysql Databases

1. Install mysql-python

Run the following command:

Pip intall mysql-python

After installation:

Import MySQLdb

If no error occurs, the installation is successful.

2. Connect to MySQL

Db = MySQLdb. connect ("localhost", "root", "1", "fs ")

Specifically, localhost is the server name, root is the user name, 1 is the password, and fs is the database name, provided that the MySQL database has set the corresponding user name and password.

After the connection is successful

Cur = db. cursor ()

Obtain the cursor.

3. query data

Cur.exe cute ("select * from TableName where A = % s and B = % s order by C desc", (a, B) results = cur. fetchall () result = list (results)

Cur.exe cute () executes the query statement. cur. fetchal () gets the result set and converts the result set to a tuple Array Using list (). The rest is easy to process.

4. Write Data

Cur.exe cute ("insert into A values (% s, % s)", (x1, x2, x3, x4) db. commit ()

Regardless of the type of the written field in the table, % s is used. Otherwise, an error occurs. After writing, commit () is required ().

The other operations include the deleteand updateoperations, both of which are temporary. You can use cur.exe cute () to execute the SQL statement and use % s to substitute the parameter.