alter_function 中文man页面

系统
ALTER FUNCTION 修改一个函数的定义,目前唯一的功能是修改它的名字。

NAME

ALTER FUNCTION - 修改一个函数的定义

SYNOPSIS

ALTER FUNCTION name ( [ type [, ...] ] ) RENAME TO newname

DESCRIPTION 描述

ALTER FUNCTION 修改一个函数的定义,目前***的功能是修改它的名字。  

PARAMETERS 参数

name

 一个现有的函数的名字(可以有模式修饰)。
type

 该函数参数的数据类型。
newname

 函数的新名字。

EXAMPLES 例子


 把名字为 sqrt,参数类型为 integer 的函数重命名为 square_root:

ALTER FUNCTION sqrt(integer) RENAME TO square_root;

COMPATIBILITY 兼容性


 在 SQL 标准里有一个 ALTER FUNCTION 语句,但是它并没有提供重命名函数的选项。  

SEE ALSO 参见

CREATE FUNCTION [create_function(7)], DROP FUNCTION [drop_function(l)]

#p#

NAME

ALTER FUNCTION - change the definition of a function

SYNOPSIS

ALTER FUNCTION name ( [ type [, ...] ] ) RENAME TO newname

DESCRIPTION

ALTER FUNCTION changes the definition of a function. The only functionality is to rename the function.  

PARAMETERS

name
The name (optionally schema-qualified) of an existing function.
type
The data type of an argument of the function.
newname
The new name of the function.

EXAMPLES

To rename the function sqrt for type integer to square_root:

ALTER FUNCTION sqrt(integer) RENAME TO square_root;

COMPATIBILITY

There is an ALTER FUNCTION statement in the SQL standard, but it does not provide the option to rename the function.  

SEE ALSO

CREATE FUNCTION [create_function(7)], DROP FUNCTION [drop_function(l)]

责任编辑:韩亚珊 来源: CMPP.net
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