how can i to DECLARE a mysql list variable

Question

in a TRIGGER i must be check two fields with a SELECT result
is possible to declare a local variable as array list to storing a SELECT result such as :

SELECT lid FROM lang WHERE state=1 ;

this SELECT statement return me always more than one result
if is possible to definition it and what is the variable type for a list ?

Answer 1

Not sure what is your goal.

But just a guess. You don't need any variable but you can use IN condition:

http://sqlfiddle.com/#!9/f1434/1

SELECT *
FROM t1
WHERE lang_id IN (SELECT lid FROM lang WHERE state=1 )