Question

Here’s my table data:

id __ firstname __ lastname __ salary
_____________________________________
1  __ John      __ Brown    __ 2,1000
2  __ David     __ Green    __ 3,8000
3  __ Matt      __ Blue     __ 1,6000

You see, salary contains 2 values, which are separated by a comma.
I want to reverse salary value; so John salary should be 1000,2, David, 8000,3 and Matt 6000,1.

How to do it with a sql query?

Answer 1

How about this:

SELECT CONCAT(SUBSTRING_INDEX(salary,',',-1), ',', SUBSTRING_INDEX(salary,',',1));

Here is a demonstration: http://sqlfiddle.com/#!2/d41d8/4473

Here’s the thing about this, the primary purpose of SQL is to store and retrieve data, not to transform or modify it. You should ideally use PHP to do this.