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This commit is contained in:
Peter Eisentraut
2010-08-17 04:37:21 +00:00
parent ee0e525bfc
commit 5194b9d049
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doc/src/sgml/gist.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/gist.sgml,v 1.31 2009/06/12 19:48:53 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/gist.sgml,v 1.32 2010/08/17 04:37:20 petere Exp $ -->
<chapter id="GiST">
<title>GiST Indexes</title>
@ -102,7 +102,7 @@
<function>decompress</>, which allow an index to have internal tree data of
a different type than the data it indexes. The leaves are to be of the
indexed data type, while the other tree nodes can be of any C struct (but
you still have to follow <productname>PostgreSQL</> datatype rules here,
you still have to follow <productname>PostgreSQL</> data type rules here,
see about <literal>varlena</> for variable sized data). If the tree's
internal data type exists at the SQL level, the <literal>STORAGE</> option
of the <command>CREATE OPERATOR CLASS</> command can be used.
@ -561,7 +561,7 @@ my_same(PG_FUNCTION_ARGS)
</programlisting>
For historical reasons, the <function>same</> function doesn't
just return a boolean result; instead it has to store the flag
just return a Boolean result; instead it has to store the flag
at the location indicated by the third argument.
</para>
</listitem>
@ -583,58 +583,58 @@ my_same(PG_FUNCTION_ARGS)
(see <filename>src/backend/access/gist/gistproc.c</>). The following
<filename>contrib</> modules also contain <acronym>GiST</acronym>
operator classes:
</para>
<variablelist>
<varlistentry>
<term>btree_gist</term>
<term><filename>btree_gist</></term>
<listitem>
<para>B-Tree equivalent functionality for several data types</para>
<para>B-tree equivalent functionality for several data types</para>
</listitem>
</varlistentry>
<varlistentry>
<term>cube</term>
<term><filename>cube</></term>
<listitem>
<para>Indexing for multidimensional cubes</para>
</listitem>
</varlistentry>
<varlistentry>
<term>hstore</term>
<term><filename>hstore</></term>
<listitem>
<para>Module for storing (key, value) pairs</para>
</listitem>
</varlistentry>
<varlistentry>
<term>intarray</term>
<term><filename>intarray</></term>
<listitem>
<para>RD-Tree for one-dimensional array of int4 values</para>
</listitem>
</varlistentry>
<varlistentry>
<term>ltree</term>
<term><filename>ltree</></term>
<listitem>
<para>Indexing for tree-like structures</para>
</listitem>
</varlistentry>
<varlistentry>
<term>pg_trgm</term>
<term><filename>pg_trgm</></term>
<listitem>
<para>Text similarity using trigram matching</para>
</listitem>
</varlistentry>
<varlistentry>
<term>seg</term>
<term><filename>seg</></term>
<listitem>
<para>Indexing for <quote>float ranges</quote></para>
</listitem>
</varlistentry>
</variablelist>
</para>
</sect1>