mysql的sql經典寫法收錄
表關聯更新:
UPDATE user_bank a INNER JOIN bank AS b
ON a.bank_code = b.bank_code
SET a.bank_type =b.id WHERE a.bank_type IS NULL AND a.id=1650;
更新前的查詢：
select * from user_bank where id = 1650;
select * from user_bank where bank_type is null;
select count(*) from user_bank where bank_type is null;
select * from bank;
select * from bank where bank_code = '03010000';
