diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/func.sgml | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index da558668c8..211a450ce3 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -1,4 +1,4 @@ -<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.488 2009/10/09 21:02:55 petere Exp $ --> +<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.489 2009/10/10 03:50:15 tgl Exp $ --> <chapter id="functions"> <title>Functions and Operators</title> @@ -3156,6 +3156,31 @@ cast(-44 as bit(12)) <lineannotation>111111010100</lineannotation> </listitem> <listitem> <para> + <literal>?</literal> denotes repetition of the previous item zero + or one time. + </para> + </listitem> + <listitem> + <para> + <literal>{</><replaceable>m</><literal>}</literal> denotes repetition + of the previous item exactly <replaceable>m</> times. + </para> + </listitem> + <listitem> + <para> + <literal>{</><replaceable>m</><literal>,}</literal> denotes repetition + of the previous item <replaceable>m</> or more times. + </para> + </listitem> + <listitem> + <para> + <literal>{</><replaceable>m</><literal>,</><replaceable>n</><literal>}</> + denotes repetition of the previous item at least <replaceable>m</> and + not more than <replaceable>n</> times. + </para> + </listitem> + <listitem> + <para> Parentheses <literal>()</literal> can be used to group items into a single logical item. </para> @@ -3168,9 +3193,8 @@ cast(-44 as bit(12)) <lineannotation>111111010100</lineannotation> </listitem> </itemizedlist> - Notice that bounded repetition operators (<literal>?</> and - <literal>{...}</>) are not provided, though they exist in POSIX. - Also, the period (<literal>.</>) is not a metacharacter. + Notice that the period (<literal>.</>) is not a metacharacter + for <function>SIMILAR TO</>. </para> <para> |