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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2010-02-14 00:48:12 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2010-02-14 00:48:12 +0000 |
| commit | a9aad1b8687f9919cdf7792c3a04ebc7239fe8f1 (patch) | |
| tree | c66fbcea5d3d9bc9610463fed09b3b74876b8534 | |
| parent | bbdf72b095f646c85b572677376692a47924e3fc (diff) | |
| download | postgresql-a9aad1b8687f9919cdf7792c3a04ebc7239fe8f1.tar.gz postgresql-a9aad1b8687f9919cdf7792c3a04ebc7239fe8f1.zip | |
Document the behavior of STRICT VARIADIC functions.
| -rw-r--r-- | doc/src/sgml/ref/create_function.sgml | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/doc/src/sgml/ref/create_function.sgml b/doc/src/sgml/ref/create_function.sgml index 6d7eb84d8f2..41dc4365ce7 100644 --- a/doc/src/sgml/ref/create_function.sgml +++ b/doc/src/sgml/ref/create_function.sgml @@ -1,5 +1,5 @@ <!-- -$PostgreSQL: pgsql/doc/src/sgml/ref/create_function.sgml,v 1.88 2009/10/08 02:39:14 tgl Exp $ +$PostgreSQL: pgsql/doc/src/sgml/ref/create_function.sgml,v 1.89 2010/02/14 00:48:12 tgl Exp $ --> <refentry id="SQL-CREATEFUNCTION"> @@ -585,6 +585,13 @@ CREATE FUNCTION foo(int, int default 42) ... existing calls of the function do not stop working when it is replaced. </para> + <para> + If a function is declared <literal>STRICT</> with a <literal>VARIADIC</> + argument, the strictness check tests that the variadic array <emphasis>as + a whole</> is non-null. The function will still be called if the + array has non-null elements. + </para> + </refsect1> <refsect1 id="sql-createfunction-examples"> |