mysql - 从 select 语句向表中插入值

Question

我有以下 SQL 查询：

INSERT INTO site_city_address (`cityName`, `cityCode`, `stateId`) VALUES  (SELECT a.city, a.cityCode,  b.stateId
  FROM site_address_dropdown a INNER JOIN site_state_address b
    ON a.state = b.stateName);

我知道这可能是错的。我要做的是将a.city、a.cityCode 和b.stateId 的值作为cityName、cityCode 和stateId 插入到shopious_city_address 中。我该怎么做？

Answer 1

您可以values在select. insert在你的情况下，省略values：

INSERT  INTO site_city_address
        (`cityName`, `cityCode`, `stateId`) 
SELECT  a.city, a.cityCode, b.stateId
FROM    site_address_dropdown a 
INNER JOIN 
        site_state_address b
ON      a.state = b.stateName;

Answer 2

删除VALUES关键字。INSERT INTO...SELECT具有以下语法，

INSERT INTO site_city_address (cityName, cityCode, stateId) 
SELECT  a.city, a.cityCode, b.stateId
FROM    site_address_dropdown a 
        INNER JOIN site_state_address b
            ON a.state = b.stateName