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Include column name in build_attrmap_by_position's error reports.

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Formerly we only provided the column number, but it's frequently
more useful to mention the column name.  The input tupdesc often
doesn't have useful column names, but the output tupdesc usually
contains user-supplied names, so report that one.

Author: Marcos Pegoraro <marcos@f10.com.br>
Co-authored-by: jian he <jian.universality@gmail.com>
Co-authored-by: Tom Lane <tgl@sss.pgh.pa.us>
Co-authored-by: Erik Wienhold <ewie@ewie.name>
Reviewed-by: Vladlen Popolitov <v.popolitov@postgrespro.ru>
Discussion: https://postgr.es/m/CAB-JLwanky28gjAMdnMh1CjyO1b2zLdr6UOA1-oY9G7PVL9KKQ@mail.gmail.com
This commit is contained in:
Tom Lane
2025-03-07 13:24:09 -05:00
parent b48832cddb
commit 34c3c5ce1c
4 changed files with 41 additions and 23 deletions
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2
src/test/regress/expected/plpgsql.out
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@@ -3779,7 +3779,7 @@ end;
$$ language plpgsql;
select compos();
ERROR: returned record type does not match expected record type
DETAIL: Returned type unknown does not match expected type character varying in column 2.
DETAIL: Returned type unknown does not match expected type character varying in column "y" (position 2).
CONTEXT: PL/pgSQL function compos() while casting return value to function's return type
-- ... but this does
create or replace function compos() returns compostype as $$