Remove 'msg' parameter from convert_tuples_by_name

The message was included as a parameter when this function was added in
dcb2bda9, but I don't think it has ever served any useful purpose.
Let's stop spreading it pointlessly.

Reviewed by Amit Langote and Peter Eisentraut.

Discussion: https://postgr.es/m/20190806224728.GA17233@alvherre.pgsql

src/backend/access/common/tupconvert.c

@@ -203,15 +203,14 @@ convert_tuples_by_position(TupleDesc indesc,
  */
 TupleConversionMap *
 convert_tuples_by_name(TupleDesc indesc,
-					   TupleDesc outdesc,
-					   const char *msg)
+					   TupleDesc outdesc)
 {
 	TupleConversionMap *map;
 	AttrNumber *attrMap;
 	int			n = outdesc->natts;
 
 	/* Verify compatibility and prepare attribute-number map */
-	attrMap = convert_tuples_by_name_map_if_req(indesc, outdesc, msg);
+	attrMap = convert_tuples_by_name_map_if_req(indesc, outdesc);
 
 	if (attrMap == NULL)
 	{
@@ -244,8 +243,7 @@ convert_tuples_by_name(TupleDesc indesc,
  */
 AttrNumber *
 convert_tuples_by_name_map(TupleDesc indesc,
-						   TupleDesc outdesc,
-						   const char *msg)
+						   TupleDesc outdesc)
 {
 	AttrNumber *attrMap;
 	int			outnatts;
@@ -299,7 +297,7 @@ convert_tuples_by_name_map(TupleDesc indesc,
 				if (atttypid != inatt->atttypid || atttypmod != inatt->atttypmod)
 					ereport(ERROR,
 							(errcode(ERRCODE_DATATYPE_MISMATCH),
-							 errmsg_internal("%s", _(msg)),
+							 errmsg("could not convert row type"),
 							 errdetail("Attribute \"%s\" of type %s does not match corresponding attribute of type %s.",
 									   attname,
 									   format_type_be(outdesc->tdtypeid),
@@ -311,7 +309,7 @@ convert_tuples_by_name_map(TupleDesc indesc,
 		if (attrMap[i] == 0)
 			ereport(ERROR,
 					(errcode(ERRCODE_DATATYPE_MISMATCH),
-					 errmsg_internal("%s", _(msg)),
+					 errmsg("could not convert row type"),
 					 errdetail("Attribute \"%s\" of type %s does not exist in type %s.",
 							   attname,
 							   format_type_be(outdesc->tdtypeid),
@@ -327,8 +325,7 @@ convert_tuples_by_name_map(TupleDesc indesc,
  */
 AttrNumber *
 convert_tuples_by_name_map_if_req(TupleDesc indesc,
-								  TupleDesc outdesc,
-								  const char *msg)
+								  TupleDesc outdesc)
 {
 	AttrNumber *attrMap;
 	int			n = outdesc->natts;
@@ -336,7 +333,7 @@ convert_tuples_by_name_map_if_req(TupleDesc indesc,
 	bool		same;
 
 	/* Verify compatibility and prepare attribute-number map */
-	attrMap = convert_tuples_by_name_map(indesc, outdesc, msg);
+	attrMap = convert_tuples_by_name_map(indesc, outdesc);
 
 	/*
 	 * Check to see if the map is one-to-one, in which case we need not do a

src/backend/catalog/partition.c

@@ -210,8 +210,7 @@ map_partition_varattnos(List *expr, int fromrel_varno,
 		AttrNumber *part_attnos;
 
 		part_attnos = convert_tuples_by_name_map(RelationGetDescr(to_rel),
-												 RelationGetDescr(from_rel),
-												 gettext_noop("could not convert row type"));
+												 RelationGetDescr(from_rel));
 		expr = (List *) map_variable_attnos((Node *) expr,
 											fromrel_varno, 0,
 											part_attnos,

src/backend/commands/analyze.c

@@ -1356,8 +1356,7 @@ acquire_inherited_sample_rows(Relation onerel, int elevel,
 					TupleConversionMap *map;
 
 					map = convert_tuples_by_name(RelationGetDescr(childrel),
-												 RelationGetDescr(onerel),
-												 gettext_noop("could not convert row type"));
+												 RelationGetDescr(onerel));
 					if (map != NULL)
 					{
 						int			j;

src/backend/commands/indexcmds.c

@@ -1086,8 +1086,7 @@ DefineIndex(Oid relationId,
 				childidxs = RelationGetIndexList(childrel);
 				attmap =
 					convert_tuples_by_name_map(RelationGetDescr(childrel),
-											   parentDesc,
-											   gettext_noop("could not convert row type"));
+											   parentDesc);
 				maplen = parentDesc->natts;
 
 				foreach(cell, childidxs)

src/backend/commands/tablecmds.c

@@ -1087,8 +1087,7 @@ DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId,
 			}
 
 			attmap = convert_tuples_by_name_map(RelationGetDescr(rel),
-												RelationGetDescr(parent),
-												gettext_noop("could not convert row type"));
+												RelationGetDescr(parent));
 			idxstmt =
 				generateClonedIndexStmt(NULL, idxRel,
 										attmap, RelationGetDescr(rel)->natts,
@@ -8171,8 +8170,7 @@ addFkRecurseReferenced(List **wqueue, Constraint *fkconstraint, Relation rel,
 			 * definition to match the partition's column layout.
 			 */
 			map = convert_tuples_by_name_map_if_req(RelationGetDescr(partRel),
-													RelationGetDescr(pkrel),
-													gettext_noop("could not convert row type"));
+													RelationGetDescr(pkrel));
 			if (map)
 			{
 				mapped_pkattnum = palloc(sizeof(AttrNumber) * numfks);
@@ -8314,8 +8312,7 @@ addFkRecurseReferencing(List **wqueue, Constraint *fkconstraint, Relation rel,
 			CheckTableNotInUse(partition, "ALTER TABLE");
 
 			attmap = convert_tuples_by_name_map(RelationGetDescr(partition),
-												RelationGetDescr(rel),
-												gettext_noop("could not convert row type"));
+												RelationGetDescr(rel));
 			for (int j = 0; j < numfks; j++)
 				mapped_fkattnum[j] = attmap[fkattnum[j] - 1];
 
@@ -8505,8 +8502,7 @@ CloneFkReferenced(Relation parentRel, Relation partitionRel)
 	table_close(pg_constraint, RowShareLock);
 
 	attmap = convert_tuples_by_name_map(RelationGetDescr(partitionRel),
-										RelationGetDescr(parentRel),
-										gettext_noop("could not convert row type"));
+										RelationGetDescr(parentRel));
 	foreach(cell, clone)
 	{
 		Oid			constrOid = lfirst_oid(cell);
@@ -8642,8 +8638,7 @@ CloneFkReferencing(List **wqueue, Relation parentRel, Relation partRel)
 	 * different.  This map is used to convert them.
 	 */
 	attmap = convert_tuples_by_name_map(RelationGetDescr(partRel),
-										RelationGetDescr(parentRel),
-										gettext_noop("could not convert row type"));
+										RelationGetDescr(parentRel));
 
 	partFKs = copyObject(RelationGetFKeyList(partRel));
 
@@ -10473,8 +10468,7 @@ ATPrepAlterColumnType(List **wqueue,
 				cmd = copyObject(cmd);
 
 				attmap = convert_tuples_by_name_map(RelationGetDescr(childrel),
-													RelationGetDescr(rel),
-													gettext_noop("could not convert row type"));
+													RelationGetDescr(rel));
 				((ColumnDef *) cmd->def)->cooked_default =
 					map_variable_attnos(def->cooked_default,
 										1, 0,
@@ -15845,8 +15839,7 @@ AttachPartitionEnsureIndexes(Relation rel, Relation attachrel)
 		/* construct an indexinfo to compare existing indexes against */
 		info = BuildIndexInfo(idxRel);
 		attmap = convert_tuples_by_name_map(RelationGetDescr(attachrel),
-											RelationGetDescr(rel),
-											gettext_noop("could not convert row type"));
+											RelationGetDescr(rel));
 		constraintOid = get_relation_idx_constraint_oid(RelationGetRelid(rel), idx);
 
 		/*
@@ -16422,8 +16415,7 @@ ATExecAttachPartitionIdx(List **wqueue, Relation parentIdx, RangeVar *name)
 		childInfo = BuildIndexInfo(partIdx);
 		parentInfo = BuildIndexInfo(parentIdx);
 		attmap = convert_tuples_by_name_map(RelationGetDescr(partTbl),
-											RelationGetDescr(parentTbl),
-											gettext_noop("could not convert row type"));
+											RelationGetDescr(parentTbl));
 		if (!CompareIndexInfo(childInfo, parentInfo,
 							  partIdx->rd_indcollation,
 							  parentIdx->rd_indcollation,

src/backend/executor/execExprInterp.c

@@ -3299,9 +3299,7 @@ ExecEvalConvertRowtype(ExprState *state, ExprEvalStep *op, ExprContext *econtext
 		old_cxt = MemoryContextSwitchTo(econtext->ecxt_per_query_memory);
 
 		/* prepare map from old to new attribute numbers */
-		op->d.convert_rowtype.map =
-			convert_tuples_by_name(indesc, outdesc,
-								   gettext_noop("could not convert row type"));
+		op->d.convert_rowtype.map = convert_tuples_by_name(indesc, outdesc);
 		op->d.convert_rowtype.initialized = true;
 
 		MemoryContextSwitchTo(old_cxt);

src/backend/executor/execMain.c

@@ -1861,8 +1861,7 @@ ExecPartitionCheckEmitError(ResultRelInfo *resultRelInfo,
 
 		old_tupdesc = RelationGetDescr(resultRelInfo->ri_RelationDesc);
 		/* a reverse map */
-		map = convert_tuples_by_name_map_if_req(old_tupdesc, tupdesc,
-												gettext_noop("could not convert row type"));
+		map = convert_tuples_by_name_map_if_req(old_tupdesc, tupdesc);
 
 		/*
 		 * Partition-specific slot's tupdesc can't be changed, so allocate a
@@ -1947,8 +1946,7 @@ ExecConstraints(ResultRelInfo *resultRelInfo,
 					tupdesc = RelationGetDescr(rel);
 					/* a reverse map */
 					map = convert_tuples_by_name_map_if_req(orig_tupdesc,
-															tupdesc,
-															gettext_noop("could not convert row type"));
+															tupdesc);
 
 					/*
 					 * Partition-specific slot's tupdesc can't be changed, so
@@ -1997,8 +1995,7 @@ ExecConstraints(ResultRelInfo *resultRelInfo,
 				tupdesc = RelationGetDescr(rel);
 				/* a reverse map */
 				map = convert_tuples_by_name_map_if_req(old_tupdesc,
-														tupdesc,
-														gettext_noop("could not convert row type"));
+														tupdesc);
 
 				/*
 				 * Partition-specific slot's tupdesc can't be changed, so
@@ -2105,8 +2102,7 @@ ExecWithCheckOptions(WCOKind kind, ResultRelInfo *resultRelInfo,
 						tupdesc = RelationGetDescr(rel);
 						/* a reverse map */
 						map = convert_tuples_by_name_map_if_req(old_tupdesc,
-																tupdesc,
-																gettext_noop("could not convert row type"));
+																tupdesc);
 
 						/*
 						 * Partition-specific slot's tupdesc can't be changed,

src/backend/executor/execPartition.c

@@ -586,8 +586,7 @@ ExecInitPartitionInfo(ModifyTableState *mtstate, EState *estate,
 		 */
 		part_attnos =
 			convert_tuples_by_name_map(RelationGetDescr(partrel),
-									   RelationGetDescr(firstResultRel),
-									   gettext_noop("could not convert row type"));
+									   RelationGetDescr(firstResultRel));
 		wcoList = (List *)
 			map_variable_attnos((Node *) wcoList,
 								firstVarno, 0,
@@ -646,8 +645,7 @@ ExecInitPartitionInfo(ModifyTableState *mtstate, EState *estate,
 		if (part_attnos == NULL)
 			part_attnos =
 				convert_tuples_by_name_map(RelationGetDescr(partrel),
-										   RelationGetDescr(firstResultRel),
-										   gettext_noop("could not convert row type"));
+										   RelationGetDescr(firstResultRel));
 		returningList = (List *)
 			map_variable_attnos((Node *) returningList,
 								firstVarno, 0,
@@ -790,8 +788,7 @@ ExecInitPartitionInfo(ModifyTableState *mtstate, EState *estate,
 				if (part_attnos == NULL)
 					part_attnos =
 						convert_tuples_by_name_map(RelationGetDescr(partrel),
-												   RelationGetDescr(firstResultRel),
-												   gettext_noop("could not convert row type"));
+												   RelationGetDescr(firstResultRel));
 				onconflset = (List *)
 					map_variable_attnos((Node *) onconflset,
 										INNER_VAR, 0,
@@ -904,8 +901,7 @@ ExecInitRoutingInfo(ModifyTableState *mtstate,
 	 */
 	partrouteinfo->pi_RootToPartitionMap =
 		convert_tuples_by_name(RelationGetDescr(partRelInfo->ri_PartitionRoot),
-							   RelationGetDescr(partRelInfo->ri_RelationDesc),
-							   gettext_noop("could not convert row type"));
+							   RelationGetDescr(partRelInfo->ri_RelationDesc));
 
 	/*
 	 * If a partition has a different rowtype than the root parent, initialize
@@ -937,8 +933,7 @@ ExecInitRoutingInfo(ModifyTableState *mtstate,
 	{
 		partrouteinfo->pi_PartitionToRootMap =
 			convert_tuples_by_name(RelationGetDescr(partRelInfo->ri_RelationDesc),
-								   RelationGetDescr(partRelInfo->ri_PartitionRoot),
-								   gettext_noop("could not convert row type"));
+								   RelationGetDescr(partRelInfo->ri_PartitionRoot));
 	}
 	else
 		partrouteinfo->pi_PartitionToRootMap = NULL;
@@ -1042,8 +1037,7 @@ ExecInitPartitionDispatchInfo(EState *estate,
 		 * routing.
 		 */
 		pd->tupmap = convert_tuples_by_name_map_if_req(RelationGetDescr(parent_pd->reldesc),
-													   tupdesc,
-													   gettext_noop("could not convert row type"));
+													   tupdesc);
 		pd->tupslot = pd->tupmap ?
 			MakeSingleTupleTableSlot(tupdesc, &TTSOpsVirtual) : NULL;
 	}

src/backend/executor/nodeModifyTable.c

@@ -1959,8 +1959,7 @@ ExecSetupChildParentMapForSubplan(ModifyTableState *mtstate)
 	{
 		mtstate->mt_per_subplan_tupconv_maps[i] =
 			convert_tuples_by_name(RelationGetDescr(resultRelInfos[i].ri_RelationDesc),
-								   outdesc,
-								   gettext_noop("could not convert row type"));
+								   outdesc);
 	}
 }
 

src/include/access/tupconvert.h

@@ -36,15 +36,12 @@ extern TupleConversionMap *convert_tuples_by_position(TupleDesc indesc,
 													  const char *msg);
 
 extern TupleConversionMap *convert_tuples_by_name(TupleDesc indesc,
-												  TupleDesc outdesc,
-												  const char *msg);
+												  TupleDesc outdesc);
 
 extern AttrNumber *convert_tuples_by_name_map(TupleDesc indesc,
-											  TupleDesc outdesc,
-											  const char *msg);
+											  TupleDesc outdesc);
 extern AttrNumber *convert_tuples_by_name_map_if_req(TupleDesc indesc,
-													 TupleDesc outdesc,
-													 const char *msg);
+													 TupleDesc outdesc);
 
 extern HeapTuple execute_attr_map_tuple(HeapTuple tuple, TupleConversionMap *map);
 extern TupleTableSlot *execute_attr_map_slot(AttrNumber *attrMap,