DROP OPERATOR

NAME
SYNOPSIS
DESCRIPTION æè¿°
PARAMETERS åæ°
EXAMPLES ä¾å
COMPATIBILITY å¼å®¹æ§
SEE ALSO åè§
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NAME

DROP OPERATOR - å é¤ä¸ä¸ªæä½ç¬¦

SYNOPSIS

DROP OPERATOR name ( lefttype | NONE , righttype | NONE ) [ CASCADE | RESTRICT ]

DESCRIPTION æè¿°

DROP OPERATOR è¯å¥ä»æ°æ®åºä¸å é¤ä¸ä¸ªç°åçæä½ç¬¦ã è¦æ§è¡è¿ä¸ªå½ä»¤ï¼ä½ å¿é¡»æ¯æä½ç¬¦ææèã

PARAMETERS åæ°

name

ä¸ä¸ªç°åçæä½ç¬¦çååï¼å¯ä»¥æ模å¼ä¿®é¥°ï¼ã

lefttype

该æä½ç¬¦å·¦åæ°çç±»åãå¦æ该æä½ç¬¦æ²¡æå·¦åæ°ï¼ å NONEã

righttype

该æä½ç¬¦å³åæ°çç±»åãå¦æ该æä½ç¬¦æ²¡æå³åæ°ï¼ å NONEã

CASCADE

èªå¨å é¤ä¾èµäºæ¤æä½ç¬¦ç对象ã

RESTRICT

å¦ææä»»ä½ä¾èµå¯¹è±¡åæç»å é¤æ¤æä½ç¬¦ãè¿ä¸ªæ¯ç¼ºçã

EXAMPLES ä¾å

å°ç¨äºintegerçå¹æä½ç¬¦ aˆn å é¤ï¼

DROP OPERATOR ˆ (integer, integer);

为类å bit å é¤å·¦åç®ä½æä½ç¬¦ ˜bï¼ ˜b for type bit:

DROP OPERATOR ˜ (none, bit);

å é¤ç¨äº integer çé¶ä¹ ï¼x!ï¼ ï¼

DROP OPERATOR ! (integer, none);

COMPATIBILITY å¼å®¹æ§

å¨ SQL æ åé没æ DROP OPERATOR è¯å¥ã

SEE ALSO åè§

CREATE OPERATOR [create_operator(7)]

è¯è

Postgresql ä¸æç½ç« ä½ä¼å¹³ <laser@pgsqldb.org>

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