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help / color / mirror / Atom feedFrom: Peter Eisentraut <[email protected]>
To: [email protected]
Subject: pgsql: Whole-row fixes for ALTER COLUMN SET EXPRESSION
Date: Wed, 08 Jul 2026 17:58:34 +0000
Message-ID: <[email protected]> (raw)
Whole-row fixes for ALTER COLUMN SET EXPRESSION
When changing the expression of a generated column via ALTER TABLE
ALTER COLUMN SET EXPRESSION, objects that depend on the column via
indirect whole-row references (such as CHECK constraints, indexes)
must be handled specially, because technically pg_depend does not
contain such dependencies, see
recordDependencyOnSingleRelExpr->find_expr_references_walker.
This is a fix for commit f80bedd52, "Allow ALTER COLUMN SET EXPRESSION
on virtual columns with CHECK constraints".
Author: jian he <[email protected]>
Co-authored-by: Peter Eisentraut <[email protected]>
Reported-by: Ayush Tiwari <[email protected]>
Reviewed-by: Ayush Tiwari <[email protected]>
Reviewed-by: solai v <[email protected]>
Reviewed-by: Zsolt Parragi <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/CAJTYsWXOkyeDVbzymWc9sKrq7Y_MUv6XJXN4H9GfsBOPd3NJ+w@mail....
Branch
------
REL_19_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/9530898940302d6f501fb54a3fbc61cbfb7768bf
Modified Files
--------------
src/backend/commands/tablecmds.c | 176 ++++++++++++++++++++++++
src/test/regress/expected/generated_stored.out | 9 ++
src/test/regress/expected/generated_virtual.out | 9 ++
src/test/regress/sql/generated_stored.sql | 10 ++
src/test/regress/sql/generated_virtual.sql | 10 ++
5 files changed, 214 insertions(+)
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