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| author | Peter Eisentraut <peter@eisentraut.org> | 2023-02-22 09:32:12 +0100 |
|---|---|---|
| committer | Peter Eisentraut <peter@eisentraut.org> | 2023-02-22 09:33:07 +0100 |
| commit | 2ddab010c2777c6a965cea82dc1b809ddc33ecc1 (patch) | |
| tree | a880541c896359d98ce2aac07f6a0d54e7ecb4d2 /src/backend/utils/adt/misc.c | |
| parent | 7e5ddf7e4d1ee36233371661c5e96007c8d7c665 (diff) | |
| download | postgresql-2ddab010c2777c6a965cea82dc1b809ddc33ecc1.tar.gz postgresql-2ddab010c2777c6a965cea82dc1b809ddc33ecc1.zip | |
Implement ANY_VALUE aggregate
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
Diffstat (limited to 'src/backend/utils/adt/misc.c')
| -rw-r--r-- | src/backend/utils/adt/misc.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/backend/utils/adt/misc.c b/src/backend/utils/adt/misc.c index 220ddb8c011..f95256efd3d 100644 --- a/src/backend/utils/adt/misc.c +++ b/src/backend/utils/adt/misc.c @@ -1041,3 +1041,12 @@ pg_get_replica_identity_index(PG_FUNCTION_ARGS) else PG_RETURN_NULL(); } + +/* + * Transition function for the ANY_VALUE aggregate + */ +Datum +any_value_transfn(PG_FUNCTION_ARGS) +{ + PG_RETURN_DATUM(PG_GETARG_DATUM(0)); +} |