Re: BUG #3518: ERROR: IN types character varying and integer cannot be matched

[Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>]

"Tomasz Kawczynski" <sober(dot)pl(at)gmail(dot)com> writes:
> SELECT * FROM s_skladnik WHERE kod IN (902,902)
> ERROR: IN types character varying and integer cannot be matched

> whitch is ok (ive read about this restriction in 8.2.x)

> but why after 

> SELECT * FROM s_skladnik WHERE kod IN (902)
> or
> SELECT * FROM s_skladnik WHERE kod = 902

> I dont get error but query gives me correct result ?

This inconsistency will be gone in 8.3:

regression=# select * from t1 where kod = 902;
ERROR:  operator does not exist: character varying = integer
LINE 1: select * from t1 where kod = 902;
                                   ^
HINT:  No operator matches the given name and argument type(s). You might need to add explicit type casts.
regression=#

			regards, tom lane