刚接触Oracel,请各位大哥帮帮小弟
1.在oracel中select hq_sbz_mc,max(tvs_jl_kssj) from VIEW_HQ_SYJL_ALX group by hq_sbz_mc order by hq_sbz_mc ,这样的SQL语句我该怎么写?
2.当有个字段是DATE类型的,我怎么判断它为空?


[解决办法]
1.在oracle中，这样的语句没什么变化，可直接引用
2.select * from tab where date_col is null;
[解决办法]
1.在oracel中select hq_sbz_mc,max(tvs_jl_kssj) from VIEW_HQ_SYJL_ALX group by hq_sbz_mc order by hq_sbz_mc ,这样的SQL语句我该怎么写?


就这么写就可以了



[解决办法]
2.当有个字段是DATE类型的,我怎么判断它为空?

is null 或者not null