pg_dump: Separate table and sequence data object types

Instead of handling both sequence data and table data internally as
"table data", handle sequences separately under a "sequence set" type.
We already handled materialized view data differently, so it makes the
code somewhat cleaner to handle each relation kind separately at the top
level.

This does not change the output format, since there already was a
separate "SEQUENCE SET" archive entry type.  A noticeable difference is
that SEQUENCE SET entries now always appear after TABLE DATA entries.
And in parallel mode there is less sorting to do, because the sequence
data entries are no longer considered table data.
Reviewed-by: Anastasia Lubennikova <a.lubennikova@postgrespro.ru>
Reviewed-by: Michael Paquier <michael.paquier@gmail.com>

src/bin/pg_dump/pg_dump.c

@@ -2090,6 +2090,8 @@ makeTableDataInfo(DumpOptions *dopt, TableInfo *tbinfo, bool oids)
 
 	if (tbinfo->relkind == RELKIND_MATVIEW)
 		tdinfo->dobj.objType = DO_REFRESH_MATVIEW;
+	else if (tbinfo->relkind == RELKIND_SEQUENCE)
+		tdinfo->dobj.objType = DO_SEQUENCE_SET;
 	else
 		tdinfo->dobj.objType = DO_TABLE_DATA;
 
@@ -8498,10 +8500,10 @@ dumpDumpableObject(Archive *fout, DumpableObject *dobj)
 		case DO_TRANSFORM:
 			dumpTransform(fout, (TransformInfo *) dobj);
 			break;
-		case DO_TABLE_DATA:
-			if (((TableDataInfo *) dobj)->tdtable->relkind == RELKIND_SEQUENCE)
+		case DO_SEQUENCE_SET:
 			dumpSequenceData(fout, (TableDataInfo *) dobj);
-			else
+			break;
+		case DO_TABLE_DATA:
 			dumpTableData(fout, (TableDataInfo *) dobj);
 			break;
 		case DO_DUMMY_TYPE:
@@ -16226,6 +16228,7 @@ addBoundaryDependencies(DumpableObject **dobjs, int numObjs,
 				addObjectDependency(preDataBound, dobj->dumpId);
 				break;
 			case DO_TABLE_DATA:
+			case DO_SEQUENCE_SET:
 			case DO_BLOB_DATA:
 				/* Data objects: must come between the boundaries */
 				addObjectDependency(dobj, preDataBound->dumpId);

src/bin/pg_dump/pg_dump.h

@@ -63,6 +63,7 @@ typedef enum
 	DO_PROCLANG,
 	DO_CAST,
 	DO_TABLE_DATA,
+	DO_SEQUENCE_SET,
 	DO_DUMMY_TYPE,
 	DO_TSPARSER,
 	DO_TSDICT,

src/bin/pg_dump/pg_dump_sort.c

@@ -47,14 +47,15 @@ static const int dbObjectTypePriority[] =
 	11,							/* DO_CONVERSION */
 	18,							/* DO_TABLE */
 	20,							/* DO_ATTRDEF */
-	27,							/* DO_INDEX */
-	28,							/* DO_RULE */
-	29,							/* DO_TRIGGER */
-	26,							/* DO_CONSTRAINT */
-	30,							/* DO_FK_CONSTRAINT */
+	28,							/* DO_INDEX */
+	29,							/* DO_RULE */
+	30,							/* DO_TRIGGER */
+	27,							/* DO_CONSTRAINT */
+	31,							/* DO_FK_CONSTRAINT */
 	2,							/* DO_PROCLANG */
 	10,							/* DO_CAST */
 	23,							/* DO_TABLE_DATA */
+	24,							/* DO_SEQUENCE_SET */
 	19,							/* DO_DUMMY_TYPE */
 	12,							/* DO_TSPARSER */
 	14,							/* DO_TSDICT */
@@ -62,15 +63,15 @@ static const int dbObjectTypePriority[] =
 	15,							/* DO_TSCONFIG */
 	16,							/* DO_FDW */
 	17,							/* DO_FOREIGN_SERVER */
-	31,							/* DO_DEFAULT_ACL */
+	32,							/* DO_DEFAULT_ACL */
 	3,							/* DO_TRANSFORM */
 	21,							/* DO_BLOB */
-	24,							/* DO_BLOB_DATA */
+	25,							/* DO_BLOB_DATA */
 	22,							/* DO_PRE_DATA_BOUNDARY */
-	25,							/* DO_POST_DATA_BOUNDARY */
-	32,							/* DO_EVENT_TRIGGER */
-	33,							/* DO_REFRESH_MATVIEW */
-	34							/* DO_POLICY */
+	26,							/* DO_POST_DATA_BOUNDARY */
+	33,							/* DO_EVENT_TRIGGER */
+	34,							/* DO_REFRESH_MATVIEW */
+	35							/* DO_POLICY */
 };
 
 static DumpId preDataBoundId;
@@ -1345,6 +1346,11 @@ describeDumpableObject(DumpableObject *obj, char *buf, int bufsize)
 					 "TABLE DATA %s  (ID %d OID %u)",
 					 obj->name, obj->dumpId, obj->catId.oid);
 			return;
+		case DO_SEQUENCE_SET:
+			snprintf(buf, bufsize,
+					 "SEQUENCE SET %s  (ID %d OID %u)",
+					 obj->name, obj->dumpId, obj->catId.oid);
+			return;
 		case DO_DUMMY_TYPE:
 			snprintf(buf, bufsize,
 					 "DUMMY TYPE %s  (ID %d OID %u)",