Re: row filtering for logical replication
Amit Kapila <amit.kapila16@gmail.com>
Commits
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the thread's linked commits as JSON, with link sources.
API reference →
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Release cache tuple when no longer needed
- ed0fbc8e5ac9 15.0 landed
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Add some additional tests for row filters in logical replication.
- ceb57afd3ce1 15.0 landed
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Fix one of the tests introduced in commit 52e4f0cd47.
- cfb4e209ec15 15.0 landed
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Allow specifying row filters for logical replication of tables.
- 52e4f0cd472d 15.0 landed
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Move scanint8() to numutils.c
- cfc7191dfea3 15.0 cited
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Replace Test::More plans with done_testing
- 549ec201d613 15.0 cited
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Reduce relcache access in WAL sender streaming logical changes
- 6ce16088bfed 15.0 cited
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Small cleanups related to PUBLICATION framework code
- c9105dd3660f 15.0 cited
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Add a view to show the stats of subscription workers.
- 8d74fc96db5f 15.0 cited
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Allow publishing the tables of schema.
- 5a2832465fd8 15.0 cited
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Doc: improve documentation of CREATE/ALTER SUBSCRIPTION.
- 1882d6cca161 15.0 cited
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Add PublicationTable and PublicationRelInfo structs
- 0c6828fa987b 15.0 cited
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Remove unused argument "txn" in maybe_send_schema().
- 93d573d86571 15.0 cited
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Add prepare API support for streaming transactions in logical replication.
- 63cf61cdeb7b 15.0 cited
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Unify PostgresNode's new() and get_new_node() methods
- 201a76183e20 15.0 cited
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Use l*_node() family of functions where appropriate
- 2b00db4fb0c7 15.0 cited
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Add support for prepared transactions to built-in logical replication.
- a8fd13cab0ba 15.0 cited
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Restore the portal-level snapshot after procedure COMMIT/ROLLBACK.
- ef9480509622 11.13 cited
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Rename a parse node to be more general
- 91d1f2d30210 14.0 landed
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Remove unused column atttypmod from initial tablesync query
- 4ad31bb2ef25 14.0 landed
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SEARCH and CYCLE clauses
- 3696a600e229 14.0 cited
On Tue, Feb 1, 2022 at 4:51 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
>
> Review Comments:
> ===============
> 1.
> + else if (IsA(node, OpExpr))
> + {
> + /* OK, except user-defined operators are not allowed. */
> + if (((OpExpr *) node)->opno >= FirstNormalObjectId)
> + errdetail_msg = _("User-defined operators are not allowed.");
> + }
>
> Is it sufficient to check only the allowed operators for OpExpr? Don't
> we need to check opfuncid to ensure that the corresponding function is
> immutable? Also, what about opresulttype, opcollid, and inputcollid? I
> think we don't want to allow user-defined types or collations but as
> we are restricting the opexp to use a built-in operator, those should
> not be present in such an expression. If that is the case, then I
> think we can add a comment for the same.
>
Today, I was looking at a few other nodes supported by the patch and I
have similar questions for those as well. As an example, the patch
allows T_ScalarArrayOpExpr and the node is as follows:
typedef struct ScalarArrayOpExpr
{
Expr xpr;
Oid opno; /* PG_OPERATOR OID of the operator */
Oid opfuncid; /* PG_PROC OID of comparison function */
Oid hashfuncid; /* PG_PROC OID of hash func or InvalidOid */
Oid negfuncid; /* PG_PROC OID of negator of opfuncid function
* or InvalidOid. See above */
bool useOr; /* true for ANY, false for ALL */
Oid inputcollid; /* OID of collation that operator should use */
List *args; /* the scalar and array operands */
int location; /* token location, or -1 if unknown */
} ScalarArrayOpExpr;
Don't we need to check pg_proc OIDs like hashfuncid to ensure that it
is immutable like the patch is doing for FuncExpr? Similarly for
ArrayExpr node, don't we need to check the array_collid to see if it
contains user-defined collation? I think some of these might be okay
to permit but then it is better to have some comments to explain.
--
With Regards,
Amit Kapila.