ora-01789 query block has incorrect number of result columns

阿新 • • 發佈：2018-11-14

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author:skate time:2009-06-11

由於自動管理分割槽的過程速度慢，所以今天在調整自動管理分割槽的過程時，遇到下面的這個錯誤 ora-01789:query block has incorrect number of result columns goole之後，發現

這種問題一般出現在用UNION將若干個select連線到一起，由於select後的列的個數不相等而造成的。

比如
select userid from usercustom
union
select userid,loginname from usercustom

就會報這種錯誤。

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ora-01789 query block has incorrect number of result columns

分享一下我老師大神的人工智慧教程！零基礎，通俗易懂！http://blog.csdn.net/jiangjunshow 也歡迎大家轉載本篇文章。分享知識，造福人民，實現我們中華民族偉大復興！

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ora-01789 query block has incorrect number of result columns

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