This table matches only n, so it will report that 4 is a wrong value for 2

!|Query|!- SELECT l as n, l*2 as l  FROM ( select 'l' = 1
union
select 'l' = 2
union
select 'l' = 3
) a -!|
|n|l?|
|1|2|
|2|fail[7]|
|3|6|
