MYSQL当天日期
SELECT CURDATE()
当天日期
DELETE t1 FROM invest_year t1, invest_year t2 WHERE t1.pro_id = t2.pro_id AND t1.pro_year = t...
SELECT * FROM shop_count WHERE DATE(count_date)=current_date(); SELECT * FROM sho...
排名函数是SQL SERVER2005新增的函数。排名函数总共有四种,分别是:row_number、rank、 dense_rank 、ntile。row_number:顺序生成序号。rank:相同的...
减去一天SELECT DATE_SUB(CURDATE(), INTERVAL 1 DAY);减去一个小时hour(now())-1...
truncate table 表名...
SELECT * FROM **** WHERE trim(字段名) REGEXP '[^0-9]'=1...