Question

Suppose i have these fields:

+--------+----------+-----------+
| id     | read_to  | read_from |
+--------+----------+-----------+
|   1    |    0     | 0         |
+--------+----------+-----------+

Now let’s say i make simple query like this:

SELECT * FROM `table`

Now i would like to select first those fields WHERE read_to = 1 OR read_from = 1

And then select rest of the data.

So for example if have this kind of structure:

1 - 0 - 0
2 - 1 - 0
3 - 0 - 0
4 - 1 - 1

I would get something like this:

2 - 1 - 0
4 - 1 - 1
1 - 0 - 0
3 - 0 - 0

Answer 1

Here’s a solution that lets you specify condition for “promoted” records.

SELECT *
FROM test
ORDER BY CASE 
  WHEN read_to = 1 AND read_from = 1 THEN 0 -- you can tune the condition here
  ELSE 1
END;