Fix hard-coded relkind constants in assorted src/bin files.

Although it's reasonable to expect that most of these constants will
never change, that does not make it good programming style to hard-code
the value rather than using the RELKIND_FOO macros.

Discussion: https://postgr.es/m/11145.1488931324@sss.pgh.pa.us

src/bin/initdb/initdb.c

@@ -61,6 +61,7 @@
 
 #include "catalog/catalog.h"
 #include "catalog/pg_authid.h"
+#include "catalog/pg_class.h"
 #include "common/file_utils.h"
 #include "common/restricted_token.h"
 #include "common/username.h"
@@ -1691,9 +1692,13 @@ setup_privileges(FILE *cmdfd)
 		"  SET relacl = (SELECT array_agg(a.acl) FROM "
 		" (SELECT E'=r/\"$POSTGRES_SUPERUSERNAME\"' as acl "
 		"  UNION SELECT unnest(pg_catalog.acldefault("
-		"    CASE WHEN relkind = 'S' THEN 's' ELSE 'r' END::\"char\"," CppAsString2(BOOTSTRAP_SUPERUSERID) "::oid))"
+		"    CASE WHEN relkind = " CppAsString2(RELKIND_SEQUENCE) " THEN 's' "
+		"         ELSE 'r' END::\"char\"," CppAsString2(BOOTSTRAP_SUPERUSERID) "::oid))"
 		" ) as a) "
-		"  WHERE relkind IN ('r', 'v', 'm', 'S') AND relacl IS NULL;\n\n",
+		"  WHERE relkind IN (" CppAsString2(RELKIND_RELATION) ", "
+		CppAsString2(RELKIND_VIEW) ", " CppAsString2(RELKIND_MATVIEW) ", "
+		CppAsString2(RELKIND_SEQUENCE) ")"
+		"  AND relacl IS NULL;\n\n",
 		"GRANT USAGE ON SCHEMA pg_catalog TO PUBLIC;\n\n",
 		"GRANT CREATE, USAGE ON SCHEMA public TO PUBLIC;\n\n",
 		"REVOKE ALL ON pg_largeobject FROM PUBLIC;\n\n",
@@ -1709,7 +1714,9 @@ setup_privileges(FILE *cmdfd)
 		"        pg_class"
 		"    WHERE"
 		"        relacl IS NOT NULL"
-		"        AND relkind IN ('r', 'v', 'm', 'S');",
+		"        AND relkind IN (" CppAsString2(RELKIND_RELATION) ", "
+		CppAsString2(RELKIND_VIEW) ", " CppAsString2(RELKIND_MATVIEW) ", "
+		CppAsString2(RELKIND_SEQUENCE) ");",
 		"INSERT INTO pg_init_privs "
 		"  (objoid, classoid, objsubid, initprivs, privtype)"
 		"    SELECT"
@@ -1723,7 +1730,9 @@ setup_privileges(FILE *cmdfd)
 		"        JOIN pg_attribute ON (pg_class.oid = pg_attribute.attrelid)"
 		"    WHERE"
 		"        pg_attribute.attacl IS NOT NULL"
-		"        AND pg_class.relkind IN ('r', 'v', 'm', 'S');",
+		"        AND pg_class.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
+		CppAsString2(RELKIND_VIEW) ", " CppAsString2(RELKIND_MATVIEW) ", "
+		CppAsString2(RELKIND_SEQUENCE) ");",
 		"INSERT INTO pg_init_privs "
 		"  (objoid, classoid, objsubid, initprivs, privtype)"
 		"    SELECT"

src/bin/pg_dump/pg_dump_sort.c

@@ -19,6 +19,8 @@
 #include "pg_backup_utils.h"
 #include "pg_dump.h"
 
+#include "catalog/pg_class.h"
+
 /* translator: this is a module name */
 static const char *modulename = gettext_noop("sorter");
 
@@ -968,8 +970,8 @@ repairDependencyLoop(DumpableObject **loop,
 	if (nLoop == 2 &&
 		loop[0]->objType == DO_TABLE &&
 		loop[1]->objType == DO_RULE &&
-		(((TableInfo *) loop[0])->relkind == 'v' ||		/* RELKIND_VIEW */
-		 ((TableInfo *) loop[0])->relkind == 'm') &&	/* RELKIND_MATVIEW */
+		(((TableInfo *) loop[0])->relkind == RELKIND_VIEW ||
+		 ((TableInfo *) loop[0])->relkind == RELKIND_MATVIEW) &&
 		((RuleInfo *) loop[1])->ev_type == '1' &&
 		((RuleInfo *) loop[1])->is_instead &&
 		((RuleInfo *) loop[1])->ruletable == (TableInfo *) loop[0])
@@ -980,8 +982,8 @@ repairDependencyLoop(DumpableObject **loop,
 	if (nLoop == 2 &&
 		loop[1]->objType == DO_TABLE &&
 		loop[0]->objType == DO_RULE &&
-		(((TableInfo *) loop[1])->relkind == 'v' ||		/* RELKIND_VIEW */
-		 ((TableInfo *) loop[1])->relkind == 'm') &&	/* RELKIND_MATVIEW */
+		(((TableInfo *) loop[1])->relkind == RELKIND_VIEW ||
+		 ((TableInfo *) loop[1])->relkind == RELKIND_MATVIEW) &&
 		((RuleInfo *) loop[0])->ev_type == '1' &&
 		((RuleInfo *) loop[0])->is_instead &&
 		((RuleInfo *) loop[0])->ruletable == (TableInfo *) loop[1])
@@ -996,7 +998,7 @@ repairDependencyLoop(DumpableObject **loop,
 		for (i = 0; i < nLoop; i++)
 		{
 			if (loop[i]->objType == DO_TABLE &&
-				((TableInfo *) loop[i])->relkind == 'v')		/* RELKIND_VIEW */
+				((TableInfo *) loop[i])->relkind == RELKIND_VIEW)
 			{
 				for (j = 0; j < nLoop; j++)
 				{
@@ -1019,7 +1021,7 @@ repairDependencyLoop(DumpableObject **loop,
 		for (i = 0; i < nLoop; i++)
 		{
 			if (loop[i]->objType == DO_TABLE &&
-				((TableInfo *) loop[i])->relkind == 'm')		/* RELKIND_MATVIEW */
+				((TableInfo *) loop[i])->relkind == RELKIND_MATVIEW)
 			{
 				for (j = 0; j < nLoop; j++)
 				{

src/bin/pg_upgrade/info.c

@@ -12,6 +12,7 @@
 #include "pg_upgrade.h"
 
 #include "access/transam.h"
+#include "catalog/pg_class.h"
 
 
 static void create_rel_filename_map(const char *old_data, const char *new_data,
@@ -444,7 +445,8 @@ get_rel_infos(ClusterInfo *cluster, DbInfo *dbinfo)
 			 "  SELECT c.oid, 0::oid, 0::oid "
 			 "  FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n "
 			 "         ON c.relnamespace = n.oid "
-			 "  WHERE relkind IN ('r', 'm') AND "
+			 "  WHERE relkind IN (" CppAsString2(RELKIND_RELATION) ", "
+			 CppAsString2(RELKIND_MATVIEW) ") AND "
 	/* exclude possible orphaned temp tables */
 			 "    ((n.nspname !~ '^pg_temp_' AND "
 			 "      n.nspname !~ '^pg_toast_temp_' AND "

src/bin/pg_upgrade/pg_upgrade.c

@@ -37,6 +37,7 @@
 #include "postgres_fe.h"
 
 #include "pg_upgrade.h"
+#include "catalog/pg_class.h"
 #include "common/restricted_token.h"
 #include "fe_utils/string_utils.h"
 
@@ -565,7 +566,10 @@ set_frozenxids(bool minmxid_only)
 									  "UPDATE	pg_catalog.pg_class "
 									  "SET	relfrozenxid = '%u' "
 			/* only heap, materialized view, and TOAST are vacuumed */
-									  "WHERE	relkind IN ('r', 'm', 't')",
+									  "WHERE	relkind IN ("
+									  CppAsString2(RELKIND_RELATION) ", "
+									  CppAsString2(RELKIND_MATVIEW) ", "
+									  CppAsString2(RELKIND_TOASTVALUE) ")",
 									  old_cluster.controldata.chkpnt_nxtxid));
 
 		/* set pg_class.relminmxid */
@@ -573,7 +577,10 @@ set_frozenxids(bool minmxid_only)
 								  "UPDATE	pg_catalog.pg_class "
 								  "SET	relminmxid = '%u' "
 		/* only heap, materialized view, and TOAST are vacuumed */
-								  "WHERE	relkind IN ('r', 'm', 't')",
+								  "WHERE	relkind IN ("
+								  CppAsString2(RELKIND_RELATION) ", "
+								  CppAsString2(RELKIND_MATVIEW) ", "
+								  CppAsString2(RELKIND_TOASTVALUE) ")",
 								  old_cluster.controldata.chkpnt_nxtmulti));
 		PQfinish(conn);
 

src/bin/pg_upgrade/version.c

@@ -10,6 +10,8 @@
 #include "postgres_fe.h"
 
 #include "pg_upgrade.h"
+
+#include "catalog/pg_class.h"
 #include "fe_utils/string_utils.h"
 
 
@@ -234,7 +236,10 @@ old_9_6_check_for_unknown_data_type_usage(ClusterInfo *cluster)
 								"WHERE	c.oid = a.attrelid AND "
 								"		NOT a.attisdropped AND "
 								"		a.atttypid = 'pg_catalog.unknown'::pg_catalog.regtype AND "
-						   "		c.relkind IN ('r', 'c', 'm') AND "
+								"		c.relkind IN ("
+								CppAsString2(RELKIND_RELATION) ", "
+								CppAsString2(RELKIND_COMPOSITE_TYPE) ", "
+								CppAsString2(RELKIND_MATVIEW) ") AND "
 								"		c.relnamespace = n.oid AND "
 		/* exclude possible orphaned temp tables */
 								"		n.nspname !~ '^pg_temp_' AND "

src/bin/psql/command.c

@@ -27,6 +27,7 @@
 #include <sys/stat.h>			/* for stat() */
 #endif
 
+#include "catalog/pg_class.h"
 #include "portability/instr_time.h"
 
 #include "libpq-fe.h"
@@ -3465,11 +3466,11 @@ get_create_object_cmd(EditableObjectType obj_type, Oid oid,
 					switch (relkind[0])
 					{
 #ifdef NOT_USED
-						case 'm':
+						case RELKIND_MATVIEW:
 							appendPQExpBufferStr(buf, "CREATE OR REPLACE MATERIALIZED VIEW ");
 							break;
 #endif
-						case 'v':
+						case RELKIND_VIEW:
 							appendPQExpBufferStr(buf, "CREATE OR REPLACE VIEW ");
 							break;
 						default:

src/bin/psql/tab-complete.c

@@ -40,6 +40,9 @@
 #ifdef USE_READLINE
 
 #include <ctype.h>
+
+#include "catalog/pg_class.h"
+
 #include "libpq-fe.h"
 #include "pqexpbuffer.h"
 #include "common.h"
@@ -85,8 +88,9 @@ typedef struct SchemaQuery
 	/*
 	 * Selection condition --- only rows meeting this condition are candidates
 	 * to display.  If catname mentions multiple tables, include the necessary
-	 * join condition here.  For example, "c.relkind = 'r'". Write NULL (not
-	 * an empty string) if not needed.
+	 * join condition here.  For example, this might look like "c.relkind = "
+	 * CppAsString2(RELKIND_RELATION).  Write NULL (not an empty string) if
+	 * not needed.
 	 */
 	const char *selcondition;
 
@@ -361,7 +365,8 @@ static const SchemaQuery Query_for_list_of_datatypes = {
 	"pg_catalog.pg_type t",
 	/* selcondition --- ignore table rowtypes and array types */
 	"(t.typrelid = 0 "
-	" OR (SELECT c.relkind = 'c' FROM pg_catalog.pg_class c WHERE c.oid = t.typrelid)) "
+	" OR (SELECT c.relkind = " CppAsString2(RELKIND_COMPOSITE_TYPE)
+	"     FROM pg_catalog.pg_class c WHERE c.oid = t.typrelid)) "
 	"AND t.typname !~ '^_'",
 	/* viscondition */
 	"pg_catalog.pg_type_is_visible(t.oid)",
@@ -407,7 +412,7 @@ static const SchemaQuery Query_for_list_of_indexes = {
 	/* catname */
 	"pg_catalog.pg_class c",
 	/* selcondition */
-	"c.relkind IN ('i')",
+	"c.relkind IN (" CppAsString2(RELKIND_INDEX) ")",
 	/* viscondition */
 	"pg_catalog.pg_table_is_visible(c.oid)",
 	/* namespace */
@@ -422,7 +427,7 @@ static const SchemaQuery Query_for_list_of_sequences = {
 	/* catname */
 	"pg_catalog.pg_class c",
 	/* selcondition */
-	"c.relkind IN ('S')",
+	"c.relkind IN (" CppAsString2(RELKIND_SEQUENCE) ")",
 	/* viscondition */
 	"pg_catalog.pg_table_is_visible(c.oid)",
 	/* namespace */
@@ -437,7 +442,7 @@ static const SchemaQuery Query_for_list_of_foreign_tables = {
 	/* catname */
 	"pg_catalog.pg_class c",
 	/* selcondition */
-	"c.relkind IN ('f')",
+	"c.relkind IN (" CppAsString2(RELKIND_FOREIGN_TABLE) ")",
 	/* viscondition */
 	"pg_catalog.pg_table_is_visible(c.oid)",
 	/* namespace */
@@ -452,7 +457,8 @@ static const SchemaQuery Query_for_list_of_tables = {
 	/* catname */
 	"pg_catalog.pg_class c",
 	/* selcondition */
-	"c.relkind IN ('r', 'P')",
+	"c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
+	CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
 	/* viscondition */
 	"pg_catalog.pg_table_is_visible(c.oid)",
 	/* namespace */
@@ -467,7 +473,7 @@ static const SchemaQuery Query_for_list_of_partitioned_tables = {
 	/* catname */
 	"pg_catalog.pg_class c",
 	/* selcondition */
-	"c.relkind IN ('P')",
+	"c.relkind IN (" CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
 	/* viscondition */
 	"pg_catalog.pg_table_is_visible(c.oid)",
 	/* namespace */
@@ -498,7 +504,10 @@ static const SchemaQuery Query_for_list_of_updatables = {
 	/* catname */
 	"pg_catalog.pg_class c",
 	/* selcondition */
-	"c.relkind IN ('r', 'f', 'v', 'P')",
+	"c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
+	CppAsString2(RELKIND_FOREIGN_TABLE) ", "
+	CppAsString2(RELKIND_VIEW) ", "
+	CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
 	/* viscondition */
 	"pg_catalog.pg_table_is_visible(c.oid)",
 	/* namespace */
@@ -528,7 +537,12 @@ static const SchemaQuery Query_for_list_of_tsvmf = {
 	/* catname */
 	"pg_catalog.pg_class c",
 	/* selcondition */
-	"c.relkind IN ('r', 'S', 'v', 'm', 'f', 'P')",
+	"c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
+	CppAsString2(RELKIND_SEQUENCE) ", "
+	CppAsString2(RELKIND_VIEW) ", "
+	CppAsString2(RELKIND_MATVIEW) ", "
+	CppAsString2(RELKIND_FOREIGN_TABLE) ", "
+	CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
 	/* viscondition */
 	"pg_catalog.pg_table_is_visible(c.oid)",
 	/* namespace */
@@ -543,7 +557,9 @@ static const SchemaQuery Query_for_list_of_tmf = {
 	/* catname */
 	"pg_catalog.pg_class c",
 	/* selcondition */
-	"c.relkind IN ('r', 'm', 'f')",
+	"c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
+	CppAsString2(RELKIND_MATVIEW) ", "
+	CppAsString2(RELKIND_FOREIGN_TABLE) ")",
 	/* viscondition */
 	"pg_catalog.pg_table_is_visible(c.oid)",
 	/* namespace */
@@ -558,7 +574,8 @@ static const SchemaQuery Query_for_list_of_tm = {
 	/* catname */
 	"pg_catalog.pg_class c",
 	/* selcondition */
-	"c.relkind IN ('r', 'm')",
+	"c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
+	CppAsString2(RELKIND_MATVIEW) ")",
 	/* viscondition */
 	"pg_catalog.pg_table_is_visible(c.oid)",
 	/* namespace */
@@ -573,7 +590,7 @@ static const SchemaQuery Query_for_list_of_views = {
 	/* catname */
 	"pg_catalog.pg_class c",
 	/* selcondition */
-	"c.relkind IN ('v')",
+	"c.relkind IN (" CppAsString2(RELKIND_VIEW) ")",
 	/* viscondition */
 	"pg_catalog.pg_table_is_visible(c.oid)",
 	/* namespace */
@@ -588,7 +605,7 @@ static const SchemaQuery Query_for_list_of_matviews = {
 	/* catname */
 	"pg_catalog.pg_class c",
 	/* selcondition */
-	"c.relkind IN ('m')",
+	"c.relkind IN (" CppAsString2(RELKIND_MATVIEW) ")",
 	/* viscondition */
 	"pg_catalog.pg_table_is_visible(c.oid)",
 	/* namespace */

src/bin/scripts/vacuumdb.c

@@ -16,6 +16,8 @@
 #include <sys/select.h>
 #endif
 
+#include "catalog/pg_class.h"
+
 #include "common.h"
 #include "fe_utils/simple_list.h"
 #include "fe_utils/string_utils.h"
@@ -388,8 +390,12 @@ vacuum_one_database(const char *dbname, vacuumingOptions *vacopts,
 		initPQExpBuffer(&buf);
 
 		res = executeQuery(conn,
-			"SELECT c.relname, ns.nspname FROM pg_class c, pg_namespace ns\n"
-			 " WHERE relkind IN (\'r\', \'m\') AND c.relnamespace = ns.oid\n"
+						   "SELECT c.relname, ns.nspname"
+						   " FROM pg_class c, pg_namespace ns\n"
+						   " WHERE relkind IN ("
+						   CppAsString2(RELKIND_RELATION) ", "
+						   CppAsString2(RELKIND_MATVIEW) ")"
+						   " AND c.relnamespace = ns.oid\n"
 						   " ORDER BY c.relpages DESC;",
 						   progname, echo);