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Use ereport rather than elog in WinCheckAndInitializeNullTreatment.

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Previously WinCheckAndInitializeNullTreatment() used elog() to emit an
error message. ereport() should be used instead because it's a
user-facing error. Also use existing get_func_name() to get a
function's name, rather than own implementation.

Moreover add an assertion to validate winobj parameter, just like
other window function API.

Reported-by: Tom Lane <tgl@sss.pgh.pa.us>
Author: Tatsuo Ishii <ishii@postgresql.org>
Reviewed-by: Chao Li <lic@highgo.com>
Discussion: https://postgr.es/m/2952409.1760023154%40sss.pgh.pa.us
This commit is contained in:
Tatsuo Ishii
2025-10-14 19:15:24 +09:00
parent 1206df04c2
commit 5f3808646f
1 changed files with 8 additions and 12 deletions
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20
src/backend/executor/nodeWindowAgg.c
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@@ -3538,24 +3538,20 @@ WinCheckAndInitializeNullTreatment(WindowObject winobj,
bool allowNullTreatment,
FunctionCallInfo fcinfo)
{
Assert(WindowObjectIsValid(winobj));
if (winobj->ignore_nulls != NO_NULLTREATMENT && !allowNullTreatment)
{
HeapTuple proctup;
Form_pg_proc procform;
Oid funcid;
const char *funcname = get_func_name(fcinfo->flinfo->fn_oid);
funcid = fcinfo->flinfo->fn_oid;
proctup = SearchSysCache1(PROCOID,
ObjectIdGetDatum(funcid));
if (!HeapTupleIsValid(proctup))
elog(ERROR, "cache lookup failed for function %u", funcid);
procform = (Form_pg_proc) GETSTRUCT(proctup);
elog(ERROR, "function %s does not allow RESPECT/IGNORE NULLS",
NameStr(procform->proname));
if (!funcname)
elog(ERROR, "could not get function name");
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("function %s does not allow RESPECT/IGNORE NULLS",
funcname)));
}
else if (winobj->ignore_nulls == PARSER_IGNORE_NULLS)
winobj->ignore_nulls = IGNORE_NULLS;
}
/*