HAVING Clause
Performs a filter operation on a SELECT
query, by examining the results of aggregation functions rather than testing each individual table row. Therefore, it is always used in conjunction with a function such as [COUNT()]($97f557dcc36c3360.md#count)
, [SUM()]($a792f4705aba18b3.md#sum)
, [AVG()]($95f4b67845ae13ef.md#avg)
, [MIN()]($73c276df07d34aa5.md#min)
, or [MAX()]($c867272f30ed4796.md#max)
, and typically with the [GROUP BY]($dfb59a026297e631.md#group_by)
clause also.
Restrictions:
The filter expression in the HAVING
clause cannot include a scalar subquery.
Related information:
SELECT Statement, GROUP BY Clause, Impala Aggregate Functions
Parent topic: SELECT Statement