吾生有涯,而知无涯,适当止学.循序渐进,步步提升 talk is cheap, show me the code.
发布时间:2013-06-24 14:41:39
第一步:最初,建立一张表studentconn member/membercreate table student_arch( id int, name varchar2(20));insert into student_arch values(1,'name1');insert into student_arch values(2,'name2');insert into student_arch values(3,'name3');然后关闭数据库shutdown immediate.........
lf3611962016-07-09 16:18
mysql中,怎么样查询出一个表里面上个月跟这个月消费的环比,这个sql语句该怎么写,字段有power_pay_id(id),actual_time(日期),pay_money(消费金额),请大神帮忙