>Hello,
>I try to return key from table1 which has not reference in the table2.
>
>[Table1].key
>1
>2
>3
>
>[Table2].key
>1
>
>SELECT table1.key FROM table1 ;
> WHERE table1.key NOT IN (SELECT table2.key FROM table2)
>
>I want to query return
>[Query].key
>2
>3
>
>But I got nothing.... empty sql result.... why?

REINDEX TABLE2