初始化mysql表格,让自动增加ID字段数字恢复为0
truncate table 表名
DELETE t1 FROM invest_year t1, invest_year t2 WHERE t1.pro_id = t2.pro_id AND t1.pro_year = t...
SELECT * from system_user LIMIT 60,20limit是设置分页的关键他可以控制数据输出偏移SELECT column_name,column_name FR...
SELECT * FROM **** WHERE trim(字段名) REGEXP '[^0-9]'=1...
SELECT product_brand FROM shop_product WHERE LENGTH(product_brand)>...
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...
SELECT CURDATE()当天日期...