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Bruce Momjian 2001-11-12 07:38:57 +00:00
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doc/FAQ
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Frequently Asked Questions (FAQ) for PostgreSQL
Last updated: Sun Oct 14 19:27:20 EDT 2001
Last updated: Mon Nov 12 02:38:47 EST 2001
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
@ -938,8 +938,8 @@ BYTEA bytea variable-length byte array (null-safe)
4.22) How do I create a column that will default to the current time?
Use now():
CREATE TABLE test (x int, modtime timestamp DEFAULT now() );
Use CURRENT_TIMESTAMP:
CREATE TABLE test (x int, modtime timestamp DEFAULT CURRENT_TIMESTAMP );
4.23) Why are my subqueries using IN so slow?

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alink="#0000FF">
<H1>Frequently Asked Questions (FAQ) for PostgreSQL</H1>
<P>Last updated: Sun Oct 14 19:27:20 EDT 2001</P>
<P>Last updated: Mon Nov 12 02:38:47 EST 2001</P>
<P>Current maintainer: Bruce Momjian (<A href=
"mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</A>)<BR>
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default to the current time?<BR>
</H4>
<P>Use <I>now()</I>:</P>
<P>Use <I>CURRENT_TIMESTAMP</I>:</P>
<PRE>
<CODE>CREATE TABLE test (x int, modtime timestamp DEFAULT now() );
<CODE>CREATE TABLE test (x int, modtime timestamp DEFAULT CURRENT_TIMESTAMP );
</CODE>
</PRE>