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Implement ANY_VALUE aggregate

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SQL:2023 defines an ANY_VALUE aggregate whose purpose is to emit an
implementation-dependent (i.e. non-deterministic) value from the
aggregated rows.

Author: Vik Fearing <vik@postgresfriends.org>
Reviewed-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Reviewed-by: David Rowley <dgrowleyml@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/5cff866c-10a8-d2df-32cb-e9072e6b04a2@postgresfriends.org
This commit is contained in:
Peter Eisentraut
2023-02-22 09:32:12 +01:00
parent 7e5ddf7e4d
commit 2ddab010c2
8 changed files with 74 additions and 1 deletions
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src/backend/catalog/sql_features.txt
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@@ -520,6 +520,7 @@ T622 Trigonometric functions YES
T623 General logarithm functions YES
T624 Common logarithm functions YES
T625 LISTAGG NO
T626 ANY_VALUE YES SQL:202x draft
T631 IN predicate with one list element YES
T641 Multiple column assignment NO only some syntax variants supported
T651 SQL-schema statements in SQL routines YES