HAVING

HAVING

HAVING is used with aggregate functions and GROUP BY to control which groups are selected. HAVING filters out groups that do not meet specified conditions after grouping and aggregation calculation.

Example:

SELECT count(*), mktsegment, nationkey,
CAST(sum(acctbal) AS bigint) AS totalbal
FROM customer
GROUP BY mktsegment, nationkey
HAVING sum(acctbal) > 5700000
ORDER BY totalbal DESC;