a fcuntion to compare two tables

I need a function witch compares two tables.
can some one help me ?Hi
SELECT OneTable.*, TwoTable.*
FROM OneTable
FULL OUTER JOIN
TwoTable
ON OneTable.c1 = TwoTable.c1
AND OneTable.c2 = TwoTable.c2
...
AND OneTable.cn = TwoTable.cn
WHERE OneTable.key IS NULL
OR TwoTable.key IS NULL;
"olli_d" <info@.dithmer.de> wrote in message
news:1193241328.829023.299090@.y27g2000pre.googlegroups.com...
>I need a function witch compares two tables.
> can some one help me ?
>