suchen

Heim  >  Fragen und Antworten  >  Hauptteil

java - MySQL中这句sql语句有问题吗?为什么总报错

UPDATE zqbp_contract SET zqbp_contract.yingshou_money = zqbp_con_m.yingshou_money WHERE zqbp_contract.contract_id = zqbp_con_m.con_id

报错:

[Err] 1054 - Unknown column 'zqbp_con_m.con_id' in 'where clause'

表结构:

zqbp_con_m表中有con_id字段, 截图发不上来

高洛峰高洛峰2887 Tage vor212

Antworte allen(3)Ich werde antworten

  • PHP中文网

    PHP中文网2017-04-17 17:41:51

    UPDATE zqbp_contract,zqbp_con_m SET zqbp_contract.yingshou_money = zqbp_con_m.yingshou_money WHERE zqbp_contract.contract_id = zqbp_con_m.con_id

    Antwort
    0
  • 巴扎黑

    巴扎黑2017-04-17 17:41:51

    update 语句中 update后面的,就好比select中的from,你用到的表都要加入的

    Antwort
    0
  • 怪我咯

    怪我咯2017-04-17 17:41:51

    UPDATE zqbp_contract SET zqbp_contract.yingshou_money = (SELECT zqbp_con_m.yingshou_money FROM zqbp_con_m WHERE zqbp_contract.contract_id = zqbp_con_m.con_id)

    Antwort
    0
  • StornierenAntwort