Posted by Erland Sommarskog on 12/28/07 08:33

info (informatyk@fitness[CUT]authority.pl) writes:
> my query is:
>
> SELECT a.symbol_art,b.node_key
>
> FROM artykuly a, art_podz b
>
> WHERE a.symbol_art=b.symbol_art
>
> ------------- -------------------
>
> table: artykuly table art_pod
>
> a.symbol_art b.symbol_art
>
> AA-0001 AA-0001 = record ok
>
> AA-0002 NULL = >>>>>>>>> I want to view diference
> records symbol_art in two tables
>
> How select all a.symbol_art where in table art_podz b.symbol_art is no
> exists?

You need to use an outer join:

SELECT a.symbol_art,b.node_key
FROM artykuly a
LEFT JOIN art_podz b ON a.symbol_art=b.symbol_art

With an outer join all rows in the table on the outer side, left here,
are maintained in the result set.



--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

Books Online for SQL Server 2005 at
http://www.microsoft.com/technet/prodtechnol/sql/2005/downloads/books.mspx
Books Online for SQL Server 2000 at
http://www.microsoft.com/sql/prodinfo/previousversions/books.mspx

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