MYSQL当天日期
SELECT CURDATE()
当天日期
SELECT * FROM **** WHERE trim(字段名) REGEXP '[^0-9]'=1...
减去一天SELECT DATE_SUB(CURDATE(), INTERVAL 1 DAY);减去一个小时hour(now())-1...
判断字符串(string)中是否包含另一个字符串(subStr)locate(subStr,string) :函数返回subStr在string中出现的位置实际运用SELECT LOCAT...
DELETE t1 FROM invest_year t1, invest_year t2 WHERE t1.pro_id = t2.pro_id AND t1.pro_year = t...
truncate table 表名...
mysql> select CONCAT('My', 'S', 'QL');...