Group by Error: PG::GroupingError: ERROR: column must appear in the GROUP BY clause or be used in an aggregate function
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PostgreSQL -must appear in the GROUP BY clause or be used in an aggregate function
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How to approach GROUP BY in PostgreSQL using Rails?
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Group by alias (Oracle)
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How group with min(date) and select an another column in the same table
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What is wrong with this query? (Unknown error parsing query)
59220
Reason for Column is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause
146592
Is there a faster way to get UNION ALL behavior in Postgres?
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BigQuery error "Response too large to return" when using COUNT(DISTINCT ...)
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PostgreSQL - "DISTINCT ON" and "GROUP BY" syntax
52570
How to do an update + join in PostgreSQL?
152843
"Ambiguous column name" error on one particular server
29320
How can I perform this aggregate?
48436
"AT TIME ZONE" with zone name PostgreSQL bug?
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''More than one row returned by a subquery used as an expression'' postgres error
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PostgreSQL: running count of rows for a query 'by minute'
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ORA-00918: column ambiguously defined in SELECT *
2806
How to Pivot in PostgreSQL