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Allow some exclusion constraints on partitions

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Previously we only allowed unique B-tree constraints on partitions
(and only if the constraint included all the partition keys).  But we
could allow exclusion constraints with the same restriction.  We also
require that those columns be compared for equality, not something
like &&.

Author: Paul A. Jungwirth <pj@illuminatedcomputing.com>
Reviewed-by: Ronan Dunklau <ronan.dunklau@aiven.io>
Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Discussion: https://www.postgresql.org/message-id/flat/ec8b1d9b-502e-d1f8-e909-1bf9dffe6fa5@illuminatedcomputing.com
This commit is contained in:
Peter Eisentraut
2023-07-12 09:24:43 +02:00
parent ce0b0fa3e7
commit 8c852ba9a4
13 changed files with 284 additions and 73 deletions
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5
src/test/regress/sql/alter_table.sql
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@@ -2342,14 +2342,11 @@ ALTER TABLE ataddindex
\d ataddindex
DROP TABLE ataddindex;
-- unsupported constraint types for partitioned tables
-- cannot drop column that is part of the partition key
CREATE TABLE partitioned (
a int,
b int
) PARTITION BY RANGE (a, (a+b+1));
ALTER TABLE partitioned ADD EXCLUDE USING gist (a WITH &&);
-- cannot drop column that is part of the partition key
ALTER TABLE partitioned DROP COLUMN a;
ALTER TABLE partitioned ALTER COLUMN a TYPE char(5);
ALTER TABLE partitioned DROP COLUMN b;