NAME

DROP RULE - 刪除一個(gè)重寫規(guī)則

SYNOPSIS

DROP RULE name ON relation [ CASCADE | RESTRICT ]

DESCRIPTION 描述

DROP RULE 刪除一個(gè)規(guī)則。  

PARAMETERS 參數(shù)

name

 要?jiǎng)h除的現(xiàn)存的規(guī)則。

relation

 該規(guī)則應(yīng)用的關(guān)系名字（可以有模式修飾）。

CASCADE

 自動(dòng)刪除依賴于此規(guī)則的對(duì)象。

RESTRICT

 如果有任何依賴對(duì)象，則拒絕刪除此規(guī)則。這個(gè)是缺省。

EXAMPLES 例子

 刪除重寫規(guī)則 newrule：

DROP RULE newrule ON mytable;

COMPATIBILITY 兼容性

 在 SQL 標(biāo)準(zhǔn)中沒有DROP RULE。  

SEE ALSO 參見

CREATE RULE [create_rule(7)]

#p#

NAME

DROP RULE - remove a rewrite rule

SYNOPSIS

DROP RULE name ON relation [ CASCADE | RESTRICT ]

DESCRIPTION

DROP RULE drops a rewrite rule.  

PARAMETERS

name

The name of the rule to drop.

relation

The name (optionally schema-qualified) of the table or view that the rule applies to.

CASCADE

Automatically drop objects that depend on the rule.

RESTRICT

Refuse to drop the rule if any objects depend on it. This is the default.

EXAMPLES

To drop the rewrite rule newrule:

DROP RULE newrule ON mytable;

COMPATIBILITY

There is no DROP RULE statement in the SQL standard.  

SEE ALSO

CREATE RULE [create_rule(7)]