[PATCH] Resolve unknown-type literals in GRAPH_TABLE COLUMNS

[SATYANARAYANA NARLAPURAM]

Hi hackers,

transformRangeGraphTable() calls transformExpr() and
assign_list_collations() for COLUMNS expressions but missed calling
resolveTargetListUnknowns(). As a result, literals such as 'val1'
in a COLUMNS clause retained type "unknown", causing failures with
ORDER BY, UNION, and output conversions.

Fix by calling resolveTargetListUnknowns() on the columns target
list right after assign_list_collations(), similar to SELECT target lists
in
transformSelectStmt().

Attached a patch to fix this, which also includes test cases to reproduce.


Thanks,
Satya

0001-Resolve-unknown-type-literals-in-GRAPH_TABLE-COLUMNS.patch
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