ALTER ROUTINE

ALTER ROUTINE

ALTER ROUTINE — 更改一个例程的定义

大纲

ALTER ROUTINE name [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ]
    action [ ... ] [ RESTRICT ]
ALTER ROUTINE name [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ]
    RENAME TO new_name
ALTER ROUTINE name [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ]
    OWNER TO { new_owner | CURRENT_USER | SESSION_USER }
ALTER ROUTINE name [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ]
    SET SCHEMA new_schema
ALTER ROUTINE name [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ]
    DEPENDS ON EXTENSION extension_name

其中action是下列之一：

    IMMUTABLE | STABLE | VOLATILE | [ NOT ] LEAKPROOF
    [ EXTERNAL ] SECURITY INVOKER | [ EXTERNAL ] SECURITY DEFINER
    PARALLEL { UNSAFE | RESTRICTED | SAFE }
    COST execution_cost
    ROWS result_rows
    SET configuration_parameter { TO | = } { value | DEFAULT }
    SET configuration_parameter FROM CURRENT
    RESET configuration_parameter
    RESET ALL

描述

ALTER ROUTINE更改一个例程的定义，它可以是聚集函数、普通函数或者过程。参数的描述、更多的例子以及进一步的细节请参考ALTER AGGREGATE、ALTER FUNCTION以及ALTER PROCEDURE。

示例

将类型integer的例程foo重命名为foobar：

ALTER ROUTINE foo(integer) RENAME TO foobar;

不管foo是聚集、函数还是过程，这个命令都能使用。

兼容性

这个语句与SQL标准中的ALTER ROUTINE语句部分兼容。更多细节请参考ALTER FUNCTION和ALTER PROCEDURE。允许例程名称引用聚集函数是一种PostgreSQL的扩展。

另见

ALTER AGGREGATE, ALTER FUNCTION, ALTER PROCEDURE, DROP ROUTINE 注意没有CREATE ROUTINE命令。