multiple values in mysql variable

Question

The following works as expected when there is a single value stored in a variable.

SET @a := \"20100630\";
SELECT * FROM wordbase WHERE verified = @a;
         


        

Answer 1

Using GROUP_CONCAT and GROUP BY one could pull all values ( i.e. an id ) into a variable like so:

SET @var := (SELECT GROUP_CONCAT(id) FROM `table` WHERE `verified` = @verified GROUP BY verified);