git.postgresql.org Git - postgresql.git/commitdiff

diff --git a/doc/src/sgml/ref/create_aggregate.sgml b/doc/src/sgml/ref/create_aggregate.sgml

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-$PostgreSQL: pgsql/doc/src/sgml/ref/create_aggregate.sgml,v 1.29 2003年11月29日 19:51:38 pgsql Exp $

+$PostgreSQL: pgsql/doc/src/sgml/ref/create_aggregate.sgml,v 1.30 2004年04月21日 21:52:41 neilc Exp $

PostgreSQL documentation

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<title>Description</title>

<para>

- <command>CREATE AGGREGATE</command> defines a new aggregate function. Some aggregate functions

- for base types such as <function>min(integer)</function>

- and <function>avg(double precision)</function> are already provided in the standard

- distribution. If one defines new types or needs an aggregate function not

- already provided, then <command>CREATE AGGREGATE</command>

- can be used to provide the desired features.

+ <command>CREATE AGGREGATE</command> defines a new aggregate

+ function. Some basic and commonly-used aggregate functions are

+ included with the distribution; they are documented in <xref

+ linkend="functions-aggregate">. If one defines new types or needs

+ an aggregate function not already provided, then <command>CREATE

+ AGGREGATE</command> can be used to provide the desired features.

</para>

<para>