Question

我遇到了mysql查询的问题。我需要将数据从一个表复制到另一个表。我正在使用的查询是：

mysql> insert into voucher (code, amount, expire_at, state, driver_id, asset_account_id, created_at, updated_at, creator_id, agent, voucher_batch_id, image, city_id, country_id, serial_number, updater_id, redeemed_at) select (code, amount, expire_at, state, driver_id, asset_account_id, created_at, updated_at, creator_id, agent, voucher_batch_id, image, city_id, country_id, serial_number, updater_id, redeemed_at) from voucher_log ;

但是，执行此操作时出现以下错误：

ERROR 1241（21000）：操作数应包含1列

Answer 1

insert into voucher 
    (code, amount, expire_at, state, driver_id, asset_account_id, created_at, updated_at, creator_id, agent, voucher_batch_id, image, city_id, country_id, serial_number, updater_id, redeemed_at) 
select 
    (code, amount, expire_at, state, driver_id, asset_account_id, created_at, updated_at, creator_id, agent, voucher_batch_id, image, city_id, country_id, serial_number, updater_id, redeemed_at) 
from voucher_log ;

您的查询应该是

insert into 
    voucher (code, amount, expire_at, state, driver_id, asset_account_id, created_at, updated_at, creator_id, agent, voucher_batch_id, image, city_id, country_id, serial_number, updater_id, redeemed_at) 
select 
    code, amount, expire_at, state, driver_id, asset_account_id, created_at, updated_at, creator_id, agent, voucher_batch_id, image, city_id, country_id, serial_number, updater_id, redeemed_at 
from voucher_log ;

您将()放入选择查询中。那部分是错的。

mysql错误：ERROR 1241（21000）：操作数应包含1列

1 个答案: