从select语句

Question

插入值，以表我有以下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); 

我知道这是可能是错误的。我想要做的是将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

您可以将insert后指定values或select。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的语法如下，

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