我不断收到 #1054 - “where 子句”中的未知列“颜色”。
我的查询的简化版本如下。
SELECT *, "red" AS colour
FROM (
SELECT *,'calls' AS 'tbl', id AS cid FROM calls) as c
WHERE colour='red'
ORDER BY colour ASC, c.created_date DESC
如果我删除 WHERE 行,查询执行正常并且颜色被识别,一切都很好。
如有任何帮助,我们将不胜感激。
最佳答案
对于您更新的问题,我认为您可以这样做
SELECT * FROM (
SELECT *, "red" AS colour
FROM (
SELECT *,'calls' AS 'tbl', id AS cid FROM calls) as c
) as v
WHERE colour='red'
ORDER BY colour ASC, v.created_date DESC
关于mysql - 左连接 - 未知列错误 1054,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13049920/