DROP RULE

Name

DROP RULE -- ÀçÀÛ¼º ·êÀ» »èÁ¦ÇÕ´Ï´Ù

Synopsis

DROP RULE [ IF EXISTS ] 
name
 ON 
relation
 [ CASCADE | RESTRICT ]

¼³¸í

DROP RULE´Â ÀçÀÛ¼º ·êÀ» »èÁ¦ÇÕ´Ï´Ù.

ÆÄ¶ó¹ÌÅÍ

IF EXISTS

·êÀÌ Á¸ÀçÇÏÁö ¾Ê´Â °æ¿ì¿¡¼­µµ ¿¡·¯¸¦ ´øÁöÁö ¸¶¼¼¿ä. ÀÌ °æ¿ì ÁÖÀÇ ¸Þ¼¼Áö°¡ ¹ßÇàµË´Ï´Ù.

name

»èÁ¦ÇÏ´Â ·êÀÇ À̸§ÀÔ´Ï´Ù.

relation

±× ·êÀÌ Àû¿ëµÈ Å×À̺í ȤÀº ºäÀÇ À̸§(¼±ÅÃÀûÀ¸·Î ÇÑÁ¤µÈ ½ºÅ°¸¶)ÀÔ´Ï´Ù.

CASCADE

·ê¿¡ ÀÇÁ¸ÇÏ´Â °´Ã¼¸¦ ÀÚµ¿ÀûÀ¸·Î »èÁ¦ÇÕ´Ï´Ù.

RESTRICT

ÀÇÁ¸ÇÏ´Â °´Ã¼°¡ ÀÖ´Â °æ¿ì, ·êÀÇ »èÁ¦¸¦ °ÅºÎÇÕ´Ï´Ù. À̰ÍÀÌ µðÆúÆ®ÀÔ´Ï´Ù.

¿¹

newrule¶ó°í ÇÏ´Â ÀçÀÛ¼º ·êÀ» »èÁ¦ÇÕ´Ï´Ù.

DROP RULE newrule ON mytable;

ȣȯ¼º

SQLÇ¥ÁØ¿¡´ÂDROP RULE¹®ÀÌ ¾ø½À´Ï´Ù.

°ü·Ã Ç׸ñ

CREATE RULE