文章分类 -  SQL

SQL.....
SQL：postgresql
摘要：1.Select语句 1.Join on 多表联查 SELECT c_bh_ft FROM FT.T_FT_YDXX JOIN msaj.t_ms_aj_jc ON ft.t_ft_ydxx.c_bh_aj = msaj.t_ms_aj_jc.c_bh WHERE c_bh_ft IS NOT NU 阅读全文
posted @ 2020-07-08 12:14 P_sara 阅读(1128) 评论(1) 推荐(0)