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Add cross-type comparisons to contrib/btree_gin.

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Extend the infrastructure in btree_gin.c to permit cross-type
operators, and add the code to support them for the int2, int4,
and int8 opclasses.  (To keep this patch digestible, I left
the other datatypes for a separate patch.)  This improves the
usability of btree_gin indexes by allowing them to support the
same set of queries that a regular btree index does.

Author: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Arseniy Mukhin <arseniy.mukhin.dev@gmail.com>
Discussion: https://postgr.es/m/262624.1738460652@sss.pgh.pa.us
This commit is contained in:
Tom Lane
2025-07-03 16:24:31 -04:00
parent 0059bbe1ec
commit e2b64fcef3
13 changed files with 932 additions and 86 deletions
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18
contrib/btree_gin/sql/int4.sql
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@@ -13,3 +13,21 @@ SELECT * FROM test_int4 WHERE i<=1::int4 ORDER BY i;
SELECT * FROM test_int4 WHERE i=1::int4 ORDER BY i;
SELECT * FROM test_int4 WHERE i>=1::int4 ORDER BY i;
SELECT * FROM test_int4 WHERE i>1::int4 ORDER BY i;
explain (costs off)
SELECT * FROM test_int4 WHERE i<1::int2 ORDER BY i;
SELECT * FROM test_int4 WHERE i<1::int2 ORDER BY i;
SELECT * FROM test_int4 WHERE i<=1::int2 ORDER BY i;
SELECT * FROM test_int4 WHERE i=1::int2 ORDER BY i;
SELECT * FROM test_int4 WHERE i>=1::int2 ORDER BY i;
SELECT * FROM test_int4 WHERE i>1::int2 ORDER BY i;
explain (costs off)
SELECT * FROM test_int4 WHERE i<1::int8 ORDER BY i;
SELECT * FROM test_int4 WHERE i<1::int8 ORDER BY i;
SELECT * FROM test_int4 WHERE i<=1::int8 ORDER BY i;
SELECT * FROM test_int4 WHERE i=1::int8 ORDER BY i;
SELECT * FROM test_int4 WHERE i>=1::int8 ORDER BY i;
SELECT * FROM test_int4 WHERE i>1::int8 ORDER BY i;