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ORA-00904 invalid identifier Solution

Jan 25, 2017 · 5 min read · sql-errors ·
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Did you get an "ORA-00904 invalid identifier" error? Find out what caused the ORA-00904 error and how to resolve it in this article.

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How To Resolve ORA-00979 Not a GROUP BY Expression

Jul 11, 2016 · 4 min read · sql-errors ·
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Have you tried to run a query and got the "ORA-00979 not a group by expression" error? Learn what it is and how to resolve the error in this article.

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