Question

我在表A中添加了一列，现在它是空的。我想要做的是从表consumer获取电话栏，并将其输入到表diabetic的appphone中，只要名字，姓氏，地址，城市，州和邮编匹配即可在两个表中。以下是我一直在尝试的查询，理论上应该有效但不是。无论我改变查询的哪种方式，我都会收到相同的错误.--

错误＆＃39;子查询返回多行＆＃39;

UPDATE Diabetic_DB
SET Diabetic_DB.AppPhone = (SELECT Consumer.PHONE FROM Consumer
WHERE Consumer.FN = Diabetic_DB.FirstName
and Consumer.LN = Diabetic_DB.LastName and Consumer.ADDR = Diabetic_DB.Address1
and Consumer.CITY = Diabetic_DB.City and Consumer.ST = Diabetic_DB.State
and Consumer.ZIP = Diabetic_DB.Zip)

WHERE EXISTS (SELECT DISTINCT(PHONE) FROM Consumer WHERE Consumer.FN = Diabetic_DB.FirstName
and Consumer.LN = Diabetic_DB.LastName and Consumer.ADDR = Diabetic_DB.Address1
and Consumer.CITY = Diabetic_DB.City and Consumer.ST = Diabetic_DB.State
and Consumer.ZIP = Diabetic_DB.Zip)

我跑的原始查询看起来像这样。

UPDATE Diabetic_DB
SET Diabetic_DB.AppPhone = Consumer.PHONE
WHERE EXISTS (SELECT * FROM Consumer WHERE Consumer.FN = Diabetic_DB.FirstName
and Consumer.LN = Diabetic_DB.LastName and Consumer.ADDR = Diabetic_DB.Address1
and Consumer.CITY = Diabetic_DB.City and Consumer.ST = Diabetic_DB.State
and Consumer.ZIP = Diabetic_DB.Zip)

Answer 1

尝试这样的事情：

UPDATE Diabetic_DB
    INNER JOIN Consumer ON 
    Consumer.FN = Diabetic_DB.FirstName
    and Consumer.LN = Diabetic_DB.LastName and Consumer.ADDR = Diabetic_DB.Address1
    and Consumer.CITY = Diabetic_DB.City and Consumer.ST = Diabetic_DB.State
    and Consumer.ZIP = Diabetic_DB.Zip
SET Diabetic_DB.AppPhone = Consumer.PHONE

我如何对多列进行数据追加

1 个答案: