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For questions concerning the SQL Standard itself (also known as the ANSI or ISO SQL Standard) including writing queries that conform to that standard. This tag is NOT to be used for questions about SQL Server Standard Edition.

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Per the standard: SELECT 1 FROM r HAVING 1=1 means SELECT 1 FROM r GROUP BY () HAVING 1=1 Citation ISO/IEC 9075-2:2011 7.10 Syntax Rule 1 (Part of the definition of the HAVING clause): Let …
answered Jan 29 '13 by Kevin Cathcart