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Add 'missing_ok' argument to build_attrmap_by_name

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When it's given as true, return a 0 in the position of the missing
column rather than raising an error.

This is currently unused, but it allows us to reimplement column
permission checking in a subsequent commit.  It seems worth breaking
into a separate commit because it affects unrelated code.

Author: Amit Langote <amitlangote09@gmail.com>
Discussion: https://postgr.es/m/CA+HiwqFfiai=qBxPDTjaio_ZcaqUKh+FC=prESrB8ogZgFNNNQ@mail.gmail.com
This commit is contained in:
Alvaro Herrera
2022-11-29 09:39:36 +01:00
parent 00ae5d6f58
commit ad86d159b6
10 changed files with 55 additions and 28 deletions
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2
src/backend/access/common/tupconvert.c
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@@ -107,7 +107,7 @@ convert_tuples_by_name(TupleDesc indesc,
int n = outdesc->natts;
/* Verify compatibility and prepare attribute-number map */
attrMap = build_attrmap_by_name_if_req(indesc, outdesc);
attrMap = build_attrmap_by_name_if_req(indesc, outdesc, false);
if (attrMap == NULL)
{