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| author | Peter Eisentraut <peter_e@gmx.net> | 2009-07-22 18:07:26 +0000 |
|---|---|---|
| committer | Peter Eisentraut <peter_e@gmx.net> | 2009-07-22 18:07:26 +0000 |
| commit | 2afa73a9e8545b880ca439385f5aa8c0cf716aa8 (patch) | |
| tree | 3b9f44fbb3a1fe5eeb9278a6ccc315da88e64ad3 | |
| parent | 846c364dd4eab27e95ad01cf3a699aedea3ebe0c (diff) | |
| download | postgresql-2afa73a9e8545b880ca439385f5aa8c0cf716aa8.tar.gz postgresql-2afa73a9e8545b880ca439385f5aa8c0cf716aa8.zip | |
Clarify NULLIF example
found by "Vesa-Matti J Kari" <vmkari@cc.helsinki.fi>
| -rw-r--r-- | doc/src/sgml/func.sgml | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index cbadf0f99a1..b84f7d18dd7 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 1.482 2009/06/17 21:58:49 tgl Exp $ --> +<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.483 2009/07/22 18:07:26 petere Exp $ --> <chapter id="functions"> <title>Functions and Operators</title> @@ -9193,8 +9193,9 @@ SELECT NULLIF(value, '(none)') ... </programlisting> </para> <para> - If <replaceable>value1</replaceable> is <literal>(none)</>, return a null, - otherwise return <replaceable>value1</replaceable>. + In this example, if <literal>value</literal> is <literal>(none)</>, + null is returned, otherwise the value of <literal>value</literal> + is returned. </para> </sect2> |