| From: | Thomas Lockhart <lockhart(at)alumni(dot)caltech(dot)edu> |
|---|---|
| To: | Deva Vejay <devavejay(at)preveho(dot)com> |
| Cc: | pgsql-ports(at)postgreSQL(dot)org |
| Subject: | Re: [PORTS] Port Bug Report: Joins (does not support outer, left, right) |
| Date: | 1999-06-01 16:10:24 |
| Message-ID: | 375405F0.4718BCBF@alumni.caltech.edu |
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| Thread: | |
| Lists: | pgsql-ports |
> Summary: Joins (does not support outer, left, right)
> We were wondering if there is any method of limiting the result
> set of a quary to mimic an outer or left join with out using
> the keywords outer and left.
For a left outer join:
select <cols> from t1, t2
where t1.x = t2.x
union
select <t1 cols>, null,... from t1
where t1.x not in (select t2.x from t2);
--
Thomas Lockhart lockhart(at)alumni(dot)caltech(dot)edu
South Pasadena, California
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