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Brand 7.1 release. Also update jdbc version in release branch.

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Bruce Momjian
2000-06-12 22:36:19 +00:00
parent 332f0f5fc0
commit 6cb6d05456
9 changed files with 32 additions and 14 deletions
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doc/src/FAQ.html
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@ -137,7 +137,9 @@ am running? <BR>
large obj descriptor.</I> Why?<BR>
<A HREF="#4.22">4.22</A>) How do I create a column that will default to the
current time?<BR>
<A HREF="#4.23">4.23</A>) Why are my subqueries using <CODE>IN</CODE> so slow?<BR>
<A HREF="#4.23">4.23</A>) Why are my subqueries using <CODE>IN</CODE> so
slow?<BR>
<A HREF="#4.24">4.24</A>) How do I do an <i>outer</i> join?<BR>
<H2><CENTER>Extending PostgreSQL</CENTER></H2>
@ -1206,6 +1208,22 @@ to:
</PRE></CODE>
We hope to fix this limitation in a future release.
<H4><A NAME="4.24">4.24</A>) How do I do an <i>outer</i> join?<BR></H4><P>
PostgreSQL does not support outer joins in the current release. They can
be simulated using <small>UNION</small> and <small>NOT IN</small>. For
example, when joining <i>tab1</i> and <i>tab2,</i> the following query
does an <i>outer</i> join of the two tables:
<PRE>
SELECT tab1.col1, tab2.col2
FROM tab1, tab2
WHERE tab1.col1 = tab2.col1
UNION ALL
SELECT tab1.col1, NULL
FROM tab1
WHERE tab1.col1 NOT IN (SELECT tab2.col1 FROM tab2)
ORDER BY tab1.col1
</PRE>
<HR>
<H2><CENTER>Extending PostgreSQL</CENTER></H2><P>