diff --git a/doc/src/sgml/ref/create_function.sgml b/doc/src/sgml/ref/create_function.sgml index a679a853a9..81278bb2f8 100644 --- a/doc/src/sgml/ref/create_function.sgml +++ b/doc/src/sgml/ref/create_function.sgml @@ -579,12 +579,13 @@ CREATE FUNCTION foo(int, int default 42) ... The full SQL type syntax is allowed for - input arguments and return value. However, some details of the - type specification (e.g., the precision field for - type numeric) are the responsibility of the - underlying function implementation and are silently swallowed - (i.e., not recognized or - enforced) by the CREATE FUNCTION command. + declaring a function's arguments and return value. However, + parenthesized type modifiers (e.g., the precision field for + type numeric) are discarded by CREATE FUNCTION. + Thus for example + CREATE FUNCTION foo (varchar(10)) ... + is exactly the same as + CREATE FUNCTION foo (varchar) ....