DROP AGGREGATE

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

DROP AGGREGATE - å é¤ä¸ä¸ªç¨æ·å®ä¹çèéå½æ°

SYNOPSIS

DROP AGGREGATE name ( type ) [ CASCADE | RESTRICT ]

DESCRIPTION æè¿°

DROP AGGREGATE å°å é¤ä¸ä¸ªç°åèéå½æ°ã æ§è¡è¿æ¡å½ä»¤çç¨æ·å¿é¡»æ¯è¯¥èéå½æ°çææèã

PARAMETERS åæ°

name

ç°åçèéå½æ°åï¼å¯ä»¥æ模å¼ä¿®é¥°ï¼ã

type

èéå½æ°çè¾å¥æ°æ®ç±»åï¼æè * ï¼å¦æè¿ä¸ªèéå½æ°æ¥åä»»æè¾å¥ç±»åã

CASCADE

èªå¨å é¤ä¾èµäºè¿ä¸ªèéç对象ã

RESTRICT

å¦ææä»»ä½ä¾èµå¯¹è±¡ï¼åæç»å é¤è¿ä¸ªèéãè¿æ¯ç¼ºçã

EXAMPLES ä¾å

å°ç±»å integer çèéå½æ° myavg å é¤ï¼

DROP AGGREGATE myavg(integer);

COMPATIBILITY å¼å®¹æ§

å¨ SQL æ åä¸æ²¡æ DROP AGGREGATE è¯å¥ã

SEE ALSO åè§

ALTER AGGREGATE [alter_aggregate(7)], CREATE AGGREGATE [create_aggregate(l)]

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

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