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不明確的列名試圖查詢以下嵌套查詢PHP和MySQL:如何解決子查詢
SELECT ur.userID, us.fullname
FROM tbl_user_recipe AS ur JOIN tbl_user_settings AS us ON ur.userID = us.userID
WHERE relationship = 'analyzed' AND userID IN
(SELECT ux.userID
FROM tbl_user_recipe AS ux
WHERE ux.relationship = 'collected'
);
,我發現了以下內容,知道爲什麼之後?
#1052 - Column 'userID' in IN/ALL/ANY subquery is ambiguous
可能重複[PHP和MySQL:如何解決在JOIN操作不明確的列名?(HTTP://計算器。 COM /問題/ 431391/PHP MySQL的知識對解決歧義,列名,在聯接操作) – 2014-08-27 14:22:01