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[Patch]Add Graph* node support to expression_tree_mutator

SATYANARAYANA NARLAPURAM <satyanarlapuram@gmail.com>

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From: SATYANARAYANA NARLAPURAM <satyanarlapuram@gmail.com>
To: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>, Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>
Date: 2026-04-21T15:56:44Z
Lists: pgsql-hackers

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Hi hackers,

expression_tree_mutator_impl() was missing case handlers for
T_GraphPattern, T_GraphElementPattern, and T_GraphPropertyRef.
The corresponding expression_tree_walker_impl() already handled
all three node types, but the mutator did not, causing an
"unrecognized node type: 106" error whenever a GRAPH_TABLE
subquery appeared in a HAVING clause.

SELECT 1 FROM hv GROUP BY id
HAVING (SELECT COUNT(*) FROM GRAPH_TABLE(gh MATCH (a) COLUMNS (a.id AS x)))
> 0;
SET
ERROR:  unrecognized node type: 106

Attached a patch to address this.

Thanks,
Satya

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Handle nodes that may appear in GraphPattern expression trees