Question

I need to write a query to retrieve values from two columns using mysql table

My table has the following strucutre

| ID | to_user_id | from_user_id | message |        datetime     | 
| 1  |     21     |      07      |   hi    | 2012-05-10 04:13:01 | 
| 2  |     07     |      21      |  hello  | 2012-05-10 04:17:51 | 

I want to write a query to get both messages user send and get in single query

Answer 1

What about something like this:

SELECT * FROM `table` WHERE `to_user_id` = 21 OR `from_user_id` = 21

It’ll get the rows where user with id 21 is sender and receiver.