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Commit8d4b311

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Make pg_get_statisticsobjdef_expressions return NULL
The usual behavior for functions in ruleutils.c is to return NULL whenthe object does not exist. pg_get_statisticsobjdef_expressions raised anerror instead, so correct that.Reported-by: Justin PryzbyDiscussion:https://postgr.es/m/20210505210947.GA27406%40telsasoft.com
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‎src/backend/utils/adt/ruleutils.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1759,9 +1759,9 @@ pg_get_statisticsobjdef_expressions(PG_FUNCTION_ARGS)
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statexttup=SearchSysCache1(STATEXTOID,ObjectIdGetDatum(statextid));
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if (!HeapTupleIsValid(statexttup))
1762-
elog(ERROR,"cache lookup failed for statistics object %u",statextid);
1762+
PG_RETURN_NULL();
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1764-
/*has thestatistics expressions? */
1764+
/*Does thestats object have expressions? */
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has_exprs= !heap_attisnull(statexttup,Anum_pg_statistic_ext_stxexprs,NULL);
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/* no expressions? we're done */

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