[解决办法] 用not in 或者 no exists [解决办法] 用distinct 生成code的list,然后在你列举中剔除刚才查询出来的值。 [解决办法] not in [解决办法]
[解决办法] 如果你非得只用sql的话,也可以这样:
SQL code
select a.code from(select code1 codeunionselect code2 codeunionselect code3 codeunionselect code4 codeunionselect code5 codeunionselect code6 code) as a where a.code not in (select distinct code from T)