Re: Help with Outer Joins

Sharon,

> I come from an Oracle background and have noted that postgres 7.1
> supports outer joins...but I'm not sure of the syntax.  Note below in
> the first AND clause the (+) next to k.permit_id, I need to get the
> nulls back as well as the value but I get an error when I use (+)

The (+) method of performing outer joins is an Oracle proprietary
deviation from the SQL92 standard.   No other database uses this.

The PostgreSQL, and SQL92 standard, method for performing outer joins is
to use and explicit join syntax:

SELECT *
FROM table_a LEFT OUTER JOIN table_b
  ON table_a.1 = table_b.2

Please be careful using LEFT and RIGHT outer joins to get the joined
tables on the correct sides!

See:
http://www.postgresql.org/idocs/index.php?sql-select.html
for more information on JOIN syntax.

see:
http://techdocs.postgresql.org/
for articles on porting from Oracle to Postgres

-Josh



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