MySQL为每个已存在的记录插入记录

Question

大家好基本上我有一个查询，选择flagId = 6的所有clientId

是：

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);

结合这些陈述的最佳方法是什么？

Answer 1

您可以使用INSERT ... SELECT syntax

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

像这样，我没有测试它的语法错误

Answer 2

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

Answer 3

使用INSERT ... SELECT Syntax

您的查询应该如下，

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

Answer 4

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

Answer 5

你可以像以下一样

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

注意：此外，您必须记住，任何字段都不能是唯一字符或主键...