Question

I’m having some problem with this statement

declare @result int

select @result =   (select 1 union select 2)

select @result

Msg 512, Level 16, State 1, Line 2
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.

plz help T_T

Answer 1

An int can only store one value, not two. Consider using an array of integers:

declare @arr table (result int)
insert @arr (result) select 1 union select 2