Select value inside a comma separated string mysql

Question

This is something I have been thinking for hours and still cant get the answer.

So, I have this mysql table called 'orders'

+-----------------------------+
+ id | include                +
+-----------------------------+
+  1 | 4,7,9                  +
+  2 | 1,23,8                 +
+  3 | 11,6,3                 +                 
+  4 | 2,56,32,6              +
+-----------------------------+

I want to select a row when I have one number in the include column.

For example I have tried with this:

SELECT *  FROM `orders` WHERE `include` LIKE '%1%'

But the problem is it selects both rows 2 and 3 because number '11' contains '1'.

I need two querys: when the include table contains 'x', and when the include table does not contain 'x'.

Does anyone know how to do this?

Answer 1

Use FIND_IN_SET()

SELECT *  FROM `orders` 
WHERE find_in_set(1, `include`) > 0

But generally it would be way better to change the table structure and store only one value in the column. It' the third rule of DB normalization.