Amazon Timestream for LiveAnalytics will no longer be open to new customers starting June 20, 2025. If you would like to use Amazon Timestream for LiveAnalytics, sign up prior to that date. Existing customers can continue to use the service as normal. For more information, see Amazon Timestream for LiveAnalytics availability change.
Subquery support
Timestream supports subqueries in EXISTS and IN predicates. The
EXISTS predicate determines if a subquery returns any rows. The IN
predicate determines if values produced by the subquery match the values or expression of in IN
clause. The Timestream query language supports correlated and other subqueries.
SELECT t.c1 FROM (VALUES 1, 2, 3, 4, 5) AS t(c1) WHERE EXISTS (SELECT t.c2 FROM (VALUES 1, 2, 3) AS t(c2) WHERE t.c1= t.c2 ) ORDER BY t.c1
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3 |
SELECT t.c1 FROM (VALUES 1, 2, 3, 4, 5) AS t(c1) WHERE t.c1 IN (SELECT t.c2 FROM (VALUES 2, 3, 4) AS t(c2) ) ORDER BY t.c1
c1 |
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