DROP OPERATOR CLASS
劉䓄
DROP OPERATOR CLASS -- 役鍴婔婻淉嘩严䌂
臺濘
DROP OPERATOR CLASS [ IF EXISTS ] name USING index_method [ CASCADE | RESTRICT ]
柟誄
DROP OPERATOR CLASS 役鍴婔婻䯄橬淉嘩严䌂㔗襕欓臯認溇变傴嘹媙釂滇溴淉嘩严䌂䔇欔橬蔙㔗
埗昄
- IF EXISTS
套悩毺垔䔇淉嘩严䌂婉庻婘闼幽埏庺婔婻 notice 蔯婉滇檕庺婔婻髍臇㔗
- name
婔婻䯄庻淉嘩严䌂䔇劉庖(埇傖䫘昇嚟媞閄)
- index_method
淉嘩严䌂欔嚘䫘䔇䘵嚘螪閞桹濘䔇劉庖
- CASCADE
亓蕫役鍴冺蕡庯臖淉嘩严䌂䔇凹茇
- RESTRICT
套悩橬傂嘘冺蕡凹茇庻婘彍拐䂺役鍴溴淉嘩严䌂㔗認婻臯婺滇䚺䩕㔗
冋床
役鍴 B-tree 淉嘩严䌂 widget_ops
DROP OPERATOR CLASS widget_ops USING btree;
套悩橬傂嘘䯄庻䔇䘵嚘嘪䫘認婻淉嘩严䌂闼幽認溇变傴儖婉脘欓臯㔗嵂媹婔婻 CASCADE 役鍴認湙䔇䘵嚘傖埪認婻淉嘩严䌂㔗
噚垹攓
SQL 湺庖麯澇橬 DROP OPERATOR CLASS 臺埖㔗