开发者

ambiguous column error when joining 2 tables which have the same column name

in my table A {ID, FID, Name , Age}

in my table B{ID, Job}

When I use

SELECT ID // I want to get the ID of table B //**error**//
FROM A TA JOIN B TB
ON TA.ID = TB.FID
ORDER BY TA.Name;

Error: ambiguous column name ID

Is there anyway to do that without having to rename the column name? (The Worst 开发者_开发技巧scenario)

Thank you


SELECT TB.ID
FROM A TA JOIN B TB
ON TA.ID = TB.FID
ORDER BY TA.Name;

Use the full name (table name and column name seperated by a dot) to specifically select a column.

Your query doesn't fit your described table structure, I guess you swapped table A with table B.


SELECT TB.ID  ...

You need to prefix any ambiguous column anywhere with your table alias.


you don't need to rename anything. you just need to specify the source of ambigous field in SELECT clause since such field exists in both sources (tables)

0

上一篇:

下一篇:

精彩评论

暂无评论...
验证码 换一张
取 消

最新问答

问答排行榜