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Introduce a SQL-callable function array_sort(anyarray).

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Create a function that will sort the elements of an array
according to the element type's sort order.  If the array
has more than one dimension, the sub-arrays of the first
dimension are sorted per normal array-comparison rules,
leaving their contents alone.

In support of this, add pg_type.typarray to the set of fields
cached by the typcache.

Author: Junwang Zhao <zhjwpku@gmail.com>
Co-authored-by: Jian He <jian.universality@gmail.com>
Reviewed-by: Aleksander Alekseev <aleksander@timescale.com>
Discussion: https://postgr.es/m/CAEG8a3J41a4dpw_-F94fF-JPRXYxw-GfsgoGotKcjs9LVfEEvw@mail.gmail.com
This commit is contained in:
Tom Lane
2025-04-01 18:03:55 -04:00
parent 6da2ba1d8a
commit 6c12ae09f5
11 changed files with 426 additions and 1 deletions
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2
src/backend/utils/cache/typcache.c vendored
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@@ -499,6 +499,7 @@ lookup_type_cache(Oid type_id, int flags)
typentry->typrelid = typtup->typrelid;
typentry->typsubscript = typtup->typsubscript;
typentry->typelem = typtup->typelem;
typentry->typarray = typtup->typarray;
typentry->typcollation = typtup->typcollation;
typentry->flags |= TCFLAGS_HAVE_PG_TYPE_DATA;
@@ -544,6 +545,7 @@ lookup_type_cache(Oid type_id, int flags)
typentry->typrelid = typtup->typrelid;
typentry->typsubscript = typtup->typsubscript;
typentry->typelem = typtup->typelem;
typentry->typarray = typtup->typarray;
typentry->typcollation = typtup->typcollation;
typentry->flags |= TCFLAGS_HAVE_PG_TYPE_DATA;