tabel a 和 tabel b
将table b中的字段更新到 table a中
UPDATE way_dimes_grproll AS a INNER JOIN way_biz_customer AS b ON a.customer_id =b.customer_id SET a.member_id =b.member_id, a.user_id =b.user_id;
批量插入
INSERT INTO Table2(field1,field2,...) SELECT value1,value2,... FROM Table1