Which SQL statement is faster? (HAVING vs. WHERE...)

Which SQL statement is faster? (HAVING vs. WHERE...)

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Concatenate and group multiple rows in Oracle [duplicate]

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When to use GROUPING SETS, CUBE and ROLLUP

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Create range bins from SQL Server table for histograms

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Running total by grouped records in table

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Nested aggregate functions with grouping in postgresql

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SQL: Is it possible to 'group by' according to 'like' function's results?

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MySQL: How to group data per hour and get the latest hour

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