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DROP INDEX
DROP INDEX index_name ON tbl_name
index_name
tbl_name
DROP INDEX drops the index named index_name from the table tbl_name. In MySQL 3.22 or later, DROP INDEX is mapped to an ALTER TABLE statement to drop the index. See Section 12.1.2, “ALTER TABLE Syntax”. DROP INDEX does not do anything prior to MySQL 3.22.
ALTER TABLE
How long would you expect a drop index to take?Think again!It can easily run into tens of minutes if not hours!!(on innodb, at least), during which time other operation can be impacted. So use with care on live production servers!
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User Comments
How long would you expect a drop index to take?
Think again!
It can easily run into tens of minutes if not hours!!(on innodb, at least), during which time other operation can be impacted.
So use with care on live production servers!
Add your own comment.