删除数据
DELETE FROM{pre}vod删除所有数据
DELETE FROM{pre}vodWHERE vod_id=1000删除指定的第几条数据
DELETE FROM{pre}vodWHERE vod_actor LIKE '%刘德华%'删除vod_actor字段里有“刘德华”的数据
DELETE FROM{pre}vodWHERE vod_type=1删除指定的分类ID的数据
DELETE FROM{pre}vodWHERE vod_area LIKE '%台湾%'删除指定地区的数据
DELETE FROM{pre}vodWHERE vod_lang LIKE '%粤语%'删除指定语言的数据