using mysql how to insert rows in audit table?

Question

I am new to mysql, I have two table employee and audit

1. employee Table have 4 columns

   1. id
   2. name
   3. sal
   4. role

2. audit Table have 7 columns

   1. id
   2. type
   3. old_value
   4. new_value
   5. date
   6. username

Here , I want to insert 3 rows in audit table if someone add one row in employee table. To maintain the history

for eg: I made an entry in employee table

John | 20,000 | anaylst

Than my audit table will be

Type  | old_value |new_value | date        | username  
  name|           |John      | 01/04/2015  | dummy1
   sal|           |20,000    | 01/04/2015  | dummy1
 role |           |anaylst   | 01/04/2015  | dummy1

I am unable to insert rows in audit table.

Answer 1

Use a trigger.

https://dev.mysql.com/doc/refman/5.0/en/create-trigger.html https://dev.mysql.com/doc/refman/5.0/en/trigger-syntax.html

See this answer for details: MySQL Triggers insert into another table