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2 months ago
Distinguish between the HAVING and WHERE clause.
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Database Processing: Fundamentals, Design, and Implementation
Edition: 15th
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2 months ago
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The HAVING and WHERE clause differ in that the WHERE clause is used to identify rows that satisfy a stated condition. The HAVING clause is used to identify groups, which have been created by the GROUP BY clause, that satisfy a stated condition. In cases when the WHERE clause and the HAVING clause are both allowed to appear in the same SELECT statement, the WHERE clause is implemented to execute before the HAVING clause.
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