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Commitc5988e6

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Adjust the order of the prechecks in pgrowlocks()
4b82664 added a precheck to pgrowlocks() to ensure the given object'spg_class.relam is HEAP_TABLE_AM_OID, however, that check was put beforeanother check which was checking if the given object was a partitionedtable. Since the pg_class.relam is always InvalidOid for partitionedtables, if pgrowlocks() was called passing a partitioned table, then the"only heap AM is supported" error would be raised instead of the intendederror about the given object being a partitioned table.Here we simply move the pg_class.relam check to after the check thatverifies that we are in fact working with a normal (non-partitioned)table.Reported-by: jian heDiscussion:https://postgr.es/m/CACJufxFaSp_WguFCf0X98951zFVX+dXFnF1mxAb-G3g1HiHOow@mail.gmail.comBackpatch-through: 12, where4b82664 was introduced.
1 parent0a7b183 commitc5988e6

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‎contrib/pgrowlocks/pgrowlocks.c‎

Lines changed: 4 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -107,10 +107,6 @@ pgrowlocks(PG_FUNCTION_ARGS)
107107
relrv=makeRangeVarFromNameList(textToQualifiedNameList(relname));
108108
rel=relation_openrv(relrv,AccessShareLock);
109109

110-
if (rel->rd_rel->relam!=HEAP_TABLE_AM_OID)
111-
ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
112-
errmsg("only heap AM is supported")));
113-
114110
if (rel->rd_rel->relkind==RELKIND_PARTITIONED_TABLE)
115111
ereport(ERROR,
116112
(errcode(ERRCODE_WRONG_OBJECT_TYPE),
@@ -122,6 +118,10 @@ pgrowlocks(PG_FUNCTION_ARGS)
122118
(errcode(ERRCODE_WRONG_OBJECT_TYPE),
123119
errmsg("\"%s\" is not a table",
124120
RelationGetRelationName(rel))));
121+
elseif (rel->rd_rel->relam!=HEAP_TABLE_AM_OID)
122+
ereport(ERROR,
123+
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
124+
errmsg("only heap AM is supported")));
125125

126126
/*
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* check permissions: must have SELECT on table or be in

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