Using the SQL UPDATE command

This recipe will use the code from the previous recipe, Using the SQL INSERT command, explain it in more detail, and then extend the code to update our data.

In order to update the data that we previously inserted into our MySQL database tables, we use the SQL UPDATE command.

Getting ready

This recipe builds on the previous recipe, Using the SQL INSERT command, so read and study the previous recipe in order to follow the coding in this recipe, where we modify the existing data.

How to do it…

First, we will display the data to be modified by running the following Python to MySQL command:

import MySQLdb as mysql 
import Ch07_Code.GuiDBConfig as guiConf 

class MySQL(): 
    # class variable 
    GUIDB  = 'GuiDB' 
    #------------------------------------------------------ 
    def showData(self): 
        # connect to MySQL 
        conn, cursor = self.connect()    

        self.useGuiDB(cursor)       

        # execute command 
        cursor.execute("SELECT * FROM...