2014年2月25日
MySQL drop column is exists
摘要： Sometimes we need to drop column from a database, developers write script to drop the column by following:ALTER TABLE DROP COLUMN But if the column is already dropped from the database it will through a error as the column is no longer exist. We want to do is to drop a table or column, but only if . 阅读全文
posted @ 2014-02-25 12:15 sxplus 阅读(4421) 评论(0) 推荐(0)