MySQL为每个已经存在的记录插入一条记录

大家好，我有一个查询，选择flagId=6的所有clientId

即：

SELECT clientId from ClientsFlags WHERE flagId = 6;

现在，我想从这个查询中获取结果，并为select语句中获得的每个结果创建一个新记录

INSERT INTO clientFlags clientId, flagId VALUES('The client ID's that were obtained in the select query', 42);

组合这些语句的最佳方式是什么？

您可以使用

类似这样，我还没有测试它的语法错误

INSERT INTO clientFlags (SELECT clientId,42 from ClientsFlags WHERE flagId = 6)

您的查询应该如下所示：

INSERT INTO clientFlags (clientId, flagId) 
   SELECT clientId, flagId 
   FROM ClientsFlags WHERE flagId = 6;

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你可以像下面这样做

 INSERT INTO `clientFlags` 
 SELECT * FROM `clientFlags` WHERE `flagId` = 6

注意：您还必须记住，任何字段都不能是唯一的或主键

INSERT INTO clientFlags (clientId, flagId) SELECT clientId, 42 from ClientsFlags WHERE flagId = 6;

 INSERT INTO `clientFlags` 
 SELECT * FROM `clientFlags` WHERE `flagId` = 6