Èçºa56爆大奖在线娱乐»ÌõSQLʵÏÖÁ½±í²éѯ²¢ÅÅÐò
Ç°ÌáÊÇtable1ºÍtable2×ֶβé³öÀ´µÄ×ֶαØÐëÒ»Ñù select c.id,c.name,c.age from (select a.id,a.name,a.age from table1 union select b.id,b.name,18 as age from table2 b) c o
posted on 2022-07-22 15:36 quanµÄ֪ʶ¿â ÔĶÁ(733) ÆÀÂÛ(0) ±à¼ ÊÕ²Ø ¾Ù±¨