Fill in the blank: A SQL clause containing HAVING adds a _____ to a query instead of the underlying table.1 pointsubqueryfilterlimitjoin
Question
Fill in the blank:
A SQL clause containing HAVING adds a _____ to a query instead of the underlying table.
- point
- subquery
- filter
- limit
- join
Solution
The correct answer to fill in the blank is "filter."
In SQL, the HAVING clause is used to filter records after the GROUP BY operation has been performed. It allows you to impose a condition on groups created by the GROUP BY clause, effectively filtering the aggregated results based on specified criteria. This is different from the WHERE clause, which filters records before any grouping takes place. Thus, while both WHERE and HAVING can filter data, HAVING does so at the group level, making "filter" the appropriate word to complete the sentence.
So, the completed sentence reads: "A SQL clause containing HAVING adds a filter to a query instead of the underlying table."
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