select * from ip where substring(accessdatetime,1,10)='2009-11-06'
怎么不对啊
select * from ip where substring(accessdatetime,1,10)='2009-11-06'
怎么不对啊
access数据库不支持substring函数
你可以采用left函数试试
select * from ip where substring(accessdatetime,1,11)='2009-11-06'
试试