diff options
Diffstat (limited to 'doc/src/sgml/ref/create_language.sgml')
| -rw-r--r-- | doc/src/sgml/ref/create_language.sgml | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/doc/src/sgml/ref/create_language.sgml b/doc/src/sgml/ref/create_language.sgml index 5cdf5dc9345..1d6e61f0736 100644 --- a/doc/src/sgml/ref/create_language.sgml +++ b/doc/src/sgml/ref/create_language.sgml @@ -1,5 +1,5 @@ <!-- -$Header: /cvsroot/pgsql/doc/src/sgml/ref/create_language.sgml,v 1.27 2002/08/22 00:01:40 tgl Exp $ +$Header: /cvsroot/pgsql/doc/src/sgml/ref/create_language.sgml,v 1.28 2002/09/21 18:39:25 tgl Exp $ PostgreSQL documentation --> @@ -201,6 +201,16 @@ ERROR: PL handler function <replaceable class="parameter">funcname</replaceable </para> <para> + In <productname>PostgreSQL</productname> versions before 7.3, it was + necessary to declare handler functions as returning the placeholder + type <type>opaque</>, rather than <type>language_handler</>. + To support loading + of old dump files, <command>CREATE LANGUAGE</> will accept a function + declared as returning <type>opaque</>, but it will issue a NOTICE and + change the function's declared return type to <type>language_handler</>. + </para> + + <para> Use the <xref linkend="sql-createfunction" endterm="sql-createfunction-title"> command to create a new function. </para> |