Subqueries can return more than a single column,and their calling queries can validate against those multiple columns.
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Q28: _ queries create groupings or summaries of
Q29: Queries can be sorted in ascending or
Q30: _ queries merge rows from one or
Q31: _ queries use the WHERE clause to
Q32: The following query is an example of
Q34: _ queries simply retrieve rows.
A) Basic
B) Filtered
C)
Q35: AND has higher precedence than NOT,followed by
Q36: AS is often used to check membership
Q37: EXISTS is sometimes faster than IN.
Q38: The difference between EXISTS and IN is
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