select * from tb where flag_id='57' and re<>'已退款'
select * from tb where flag_id='57'
re varchar(50)字段都为 null
第一句一条记录都没有....
靠,,怪
select * from tb where flag_id='57'
re varchar(50)字段都为 null
第一句一条记录都没有....
靠,,怪
select * from tb where flag_id='57' and (re<>'已退款' or re is null)