diff options
Diffstat (limited to 'doc/src/sgml/ref/create_index.sgml')
| -rw-r--r-- | doc/src/sgml/ref/create_index.sgml | 50 |
1 files changed, 31 insertions, 19 deletions
diff --git a/doc/src/sgml/ref/create_index.sgml b/doc/src/sgml/ref/create_index.sgml index bfde61ee6c7..93ae0c1c816 100644 --- a/doc/src/sgml/ref/create_index.sgml +++ b/doc/src/sgml/ref/create_index.sgml @@ -1,5 +1,5 @@ <!-- -$PostgreSQL: pgsql/doc/src/sgml/ref/create_index.sgml,v 1.47 2004/04/20 12:53:28 momjian Exp $ +$PostgreSQL: pgsql/doc/src/sgml/ref/create_index.sgml,v 1.48 2004/06/18 06:13:05 tgl Exp $ PostgreSQL documentation --> @@ -22,6 +22,7 @@ PostgreSQL documentation <synopsis> CREATE [ UNIQUE ] INDEX <replaceable class="parameter">name</replaceable> ON <replaceable class="parameter">table</replaceable> [ USING <replaceable class="parameter">method</replaceable> ] ( { <replaceable class="parameter">column</replaceable> | ( <replaceable class="parameter">expression</replaceable> ) } [ <replaceable class="parameter">opclass</replaceable> ] [, ...] ) + [ TABLESPACE <replaceable class="parameter">tablespace</replaceable> ] [ WHERE <replaceable class="parameter">predicate</replaceable> ] </synopsis> </refsynopsisdiv> @@ -78,7 +79,7 @@ CREATE [ UNIQUE ] INDEX <replaceable class="parameter">name</replaceable> ON <re <para> Indexes are not used for <literal>IS NULL</> clauses by default. - The best way to use indexes in such cases is to create a partial index + The best way to use indexes in such cases is to create a partial index using an <literal>IS NULL</> comparison. </para> @@ -109,11 +110,11 @@ CREATE [ UNIQUE ] INDEX <replaceable class="parameter">name</replaceable> ON <re <term><literal>UNIQUE</literal></term> <listitem> <para> - Causes the system to check for - duplicate values in the table when the index is created (if data - already exist) and each time data is added. Attempts to - insert or update data which would result in duplicate entries - will generate an error. + Causes the system to check for + duplicate values in the table when the index is created (if data + already exist) and each time data is added. Attempts to + insert or update data which would result in duplicate entries + will generate an error. </para> </listitem> </varlistentry> @@ -122,9 +123,9 @@ CREATE [ UNIQUE ] INDEX <replaceable class="parameter">name</replaceable> ON <re <term><replaceable class="parameter">name</replaceable></term> <listitem> <para> - The name of the index to be created. No schema name can be included - here; the index is always created in the same schema as its parent - table. + The name of the index to be created. No schema name can be included + here; the index is always created in the same schema as its parent + table. </para> </listitem> </varlistentry> @@ -133,7 +134,7 @@ CREATE [ UNIQUE ] INDEX <replaceable class="parameter">name</replaceable> ON <re <term><replaceable class="parameter">table</replaceable></term> <listitem> <para> - The name (possibly schema-qualified) of the table to be indexed. + The name (possibly schema-qualified) of the table to be indexed. </para> </listitem> </varlistentry> @@ -154,7 +155,7 @@ CREATE [ UNIQUE ] INDEX <replaceable class="parameter">name</replaceable> ON <re <term><replaceable class="parameter">column</replaceable></term> <listitem> <para> - The name of a column of the table. + The name of a column of the table. </para> </listitem> </varlistentry> @@ -163,10 +164,10 @@ CREATE [ UNIQUE ] INDEX <replaceable class="parameter">name</replaceable> ON <re <term><replaceable class="parameter">expression</replaceable></term> <listitem> <para> - An expression based on one or more columns of the table. The - expression usually must be written with surrounding parentheses, - as shown in the syntax. However, the parentheses may be omitted - if the expression has the form of a function call. + An expression based on one or more columns of the table. The + expression usually must be written with surrounding parentheses, + as shown in the syntax. However, the parentheses may be omitted + if the expression has the form of a function call. </para> </listitem> </varlistentry> @@ -175,7 +176,17 @@ CREATE [ UNIQUE ] INDEX <replaceable class="parameter">name</replaceable> ON <re <term><replaceable class="parameter">opclass</replaceable></term> <listitem> <para> - The name of an operator class. See below for details. + The name of an operator class. See below for details. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><replaceable class="parameter">tablespace</replaceable></term> + <listitem> + <para> + The tablespace in which to create the index. If not specified, + the tablespace of the parent table is used. </para> </listitem> </varlistentry> @@ -184,10 +195,11 @@ CREATE [ UNIQUE ] INDEX <replaceable class="parameter">name</replaceable> ON <re <term><replaceable class="parameter">predicate</replaceable></term> <listitem> <para> - The constraint expression for a partial index. + The constraint expression for a partial index. </para> </listitem> </varlistentry> + </variablelist> </refsect1> @@ -260,7 +272,7 @@ SELECT * FROM points --> </refsect1> - + <refsect1> <title>Compatibility</title> |