Question

I have a table called user_meta and it contains data like:

---------------------------
| user_id | field | value |
---------------------------
|    1    |   1   | Green  |
|    1    |   2   | Square |
|    1    |   3   | Big    |
|    2    |   1   | Red    |
|    2    |   2   | Square |
|    2    |   3   | Small  |
----------------------------

The field column is the number of a form field in the user’s profile. The value column is the value the user submitted via the form.

How do I write a MySQL query that returns all users who have ‘green big squares’?

Thanks!

Answer 1

This will return the result that you want. This uses a WHERE clause to return all records that have the values that you want, then you count the distinct values to make sure there are only 3:

select user_id
from user_meta
where value in ('Green', 'Square', 'Big')
group by user_id
having count(distinct value) = 3

See SQL Fiddle with Demo