diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/func.sgml | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index faf0e30b157..a594a12ed7b 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 1.480 2009/05/18 08:59:29 petere Exp $ --> +<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.481 2009/05/26 17:36:05 tgl Exp $ --> <chapter id="functions"> <title>Functions and Operators</title> @@ -12367,7 +12367,9 @@ SELECT pg_type_is_visible('myschema.widget'::regtype); is a decompiled reconstruction, not the original text of the command.) <function>pg_get_expr</function> decompiles the internal form of an individual expression, such as the default value for a column. It can be - useful when examining the contents of system catalogs. + useful when examining the contents of system catalogs. If the expression + might contain Vars, specify the OID of the relation they refer to as the + second parameter; if no Vars are expected, zero is sufficient. <function>pg_get_viewdef</function> reconstructs the <command>SELECT</> query that defines a view. Most of these functions come in two variants, one of which can optionally <quote>pretty-print</> the result. The |