Fix instability in recently added regression tests

We missed the usual ORDER BY clause.

Author: Amul Sul <amul.sul@enterprisedb.com>
Discussion: https://postgr.es/m/CAAJ_b974U3Vvf-qGwFyZ73DFHqyFJP9TOmuiXR2Kp8KVcJtP6w@mail.gmail.com

src/test/regress/expected/foreign_key.out

@@ -1684,7 +1684,7 @@ ALTER TABLE fk_partitioned_fk_1 ADD FOREIGN KEY (a, b) REFERENCES fk_notpartitio
 ALTER TABLE fk_partitioned_fk ATTACH PARTITION fk_partitioned_fk_1 FOR VALUES FROM (0,0) TO (1000,1000);
 -- Child constraint will remain valid.
 SELECT conname, convalidated, conrelid::regclass FROM pg_constraint
-WHERE conrelid::regclass::text like 'fk_partitioned_fk%' ORDER BY oid;
+WHERE conrelid::regclass::text like 'fk_partitioned_fk%' ORDER BY oid::regclass::text;
            conname            | convalidated |      conrelid       
 ------------------------------+--------------+---------------------
  fk_partitioned_fk_a_b_fkey   | f            | fk_partitioned_fk
@@ -1695,7 +1695,7 @@ WHERE conrelid::regclass::text like 'fk_partitioned_fk%' ORDER BY oid;
 ALTER TABLE fk_partitioned_fk VALIDATE CONSTRAINT fk_partitioned_fk_a_b_fkey;
 -- All constraints are now valid.
 SELECT conname, convalidated, conrelid::regclass FROM pg_constraint
-WHERE conrelid::regclass::text like 'fk_partitioned_fk%' ORDER BY oid;
+WHERE conrelid::regclass::text like 'fk_partitioned_fk%' ORDER BY oid::regclass::text;
            conname            | convalidated |      conrelid       
 ------------------------------+--------------+---------------------
  fk_partitioned_fk_a_b_fkey   | t            | fk_partitioned_fk
@@ -1714,7 +1714,8 @@ DETAIL:  Key (a, b)=(1000, 1000) is not present in table "fk_notpartitioned_pk".
 TRUNCATE fk_partitioned_fk_2;
 ALTER TABLE fk_partitioned_fk ATTACH PARTITION fk_partitioned_fk_2 FOR VALUES FROM (1000,1000) TO (2000,2000);
 -- The child constraint will also be valid.
-SELECT conname, convalidated FROM pg_constraint WHERE conrelid = 'fk_partitioned_fk_2'::regclass;
+SELECT conname, convalidated FROM pg_constraint
+WHERE conrelid = 'fk_partitioned_fk_2'::regclass ORDER BY oid::regclass::text;
            conname            | convalidated 
 ------------------------------+--------------
  fk_partitioned_fk_2_a_b_fkey | t
@@ -1731,7 +1732,7 @@ ALTER TABLE fk_partitioned_fk_3 ATTACH PARTITION fk_partitioned_fk_3_1 FOR VALUE
 ALTER TABLE fk_partitioned_fk ATTACH PARTITION fk_partitioned_fk_3 FOR VALUES FROM (2000,2000) TO (3000,3000);
 -- All constraints are now valid.
 SELECT conname, convalidated, conrelid::regclass FROM pg_constraint
-WHERE conrelid::regclass::text like 'fk_partitioned_fk%' ORDER BY oid;
+WHERE conrelid::regclass::text like 'fk_partitioned_fk%' ORDER BY oid::regclass::text;
             conname             | convalidated |       conrelid        
 --------------------------------+--------------+-----------------------
  fk_partitioned_fk_a_b_fkey     | t            | fk_partitioned_fk
@@ -1748,7 +1749,8 @@ CREATE TABLE fk_partitioned_pk_1 PARTITION OF fk_partitioned_pk FOR VALUES FROM
 CREATE TABLE fk_notpartitioned_fk (b int, a int);
 ALTER TABLE fk_notpartitioned_fk ADD FOREIGN KEY (a, b) REFERENCES fk_partitioned_pk NOT VALID;
 -- Constraint will be invalid.
-SELECT conname, convalidated FROM pg_constraint WHERE conrelid = 'fk_notpartitioned_fk'::regclass;
+SELECT conname, convalidated FROM pg_constraint
+WHERE conrelid = 'fk_notpartitioned_fk'::regclass ORDER BY oid::regclass::text;
             conname             | convalidated 
 --------------------------------+--------------
  fk_notpartitioned_fk_a_b_fkey  | f
@@ -1757,7 +1759,8 @@ SELECT conname, convalidated FROM pg_constraint WHERE conrelid = 'fk_notpartitio
 
 ALTER TABLE fk_notpartitioned_fk VALIDATE CONSTRAINT fk_notpartitioned_fk_a_b_fkey;
 -- All constraints are now valid.
-SELECT conname, convalidated FROM pg_constraint WHERE conrelid = 'fk_notpartitioned_fk'::regclass;
+SELECT conname, convalidated FROM pg_constraint
+WHERE conrelid = 'fk_notpartitioned_fk'::regclass ORDER BY oid::regclass::text;
             conname             | convalidated 
 --------------------------------+--------------
  fk_notpartitioned_fk_a_b_fkey  | t

src/test/regress/sql/foreign_key.sql

@@ -1259,14 +1259,14 @@ ALTER TABLE fk_partitioned_fk ATTACH PARTITION fk_partitioned_fk_1 FOR VALUES FR
 
 -- Child constraint will remain valid.
 SELECT conname, convalidated, conrelid::regclass FROM pg_constraint
-WHERE conrelid::regclass::text like 'fk_partitioned_fk%' ORDER BY oid;
+WHERE conrelid::regclass::text like 'fk_partitioned_fk%' ORDER BY oid::regclass::text;
 
 -- Validate the constraint
 ALTER TABLE fk_partitioned_fk VALIDATE CONSTRAINT fk_partitioned_fk_a_b_fkey;
 
 -- All constraints are now valid.
 SELECT conname, convalidated, conrelid::regclass FROM pg_constraint
-WHERE conrelid::regclass::text like 'fk_partitioned_fk%' ORDER BY oid;
+WHERE conrelid::regclass::text like 'fk_partitioned_fk%' ORDER BY oid::regclass::text;
 
 -- Attaching a child with a NOT VALID constraint.
 CREATE TABLE fk_partitioned_fk_2 (a int, b int);
@@ -1281,7 +1281,8 @@ TRUNCATE fk_partitioned_fk_2;
 ALTER TABLE fk_partitioned_fk ATTACH PARTITION fk_partitioned_fk_2 FOR VALUES FROM (1000,1000) TO (2000,2000);
 
 -- The child constraint will also be valid.
-SELECT conname, convalidated FROM pg_constraint WHERE conrelid = 'fk_partitioned_fk_2'::regclass;
+SELECT conname, convalidated FROM pg_constraint
+WHERE conrelid = 'fk_partitioned_fk_2'::regclass ORDER BY oid::regclass::text;
 
 -- Test case where the child constraint is invalid, the grandchild constraint
 -- is valid, and the validation for the grandchild should be skipped when a
@@ -1295,7 +1296,7 @@ ALTER TABLE fk_partitioned_fk ATTACH PARTITION fk_partitioned_fk_3 FOR VALUES FR
 
 -- All constraints are now valid.
 SELECT conname, convalidated, conrelid::regclass FROM pg_constraint
-WHERE conrelid::regclass::text like 'fk_partitioned_fk%' ORDER BY oid;
+WHERE conrelid::regclass::text like 'fk_partitioned_fk%' ORDER BY oid::regclass::text;
 
 DROP TABLE fk_partitioned_fk, fk_notpartitioned_pk;
 
@@ -1306,12 +1307,14 @@ CREATE TABLE fk_notpartitioned_fk (b int, a int);
 ALTER TABLE fk_notpartitioned_fk ADD FOREIGN KEY (a, b) REFERENCES fk_partitioned_pk NOT VALID;
 
 -- Constraint will be invalid.
-SELECT conname, convalidated FROM pg_constraint WHERE conrelid = 'fk_notpartitioned_fk'::regclass;
+SELECT conname, convalidated FROM pg_constraint
+WHERE conrelid = 'fk_notpartitioned_fk'::regclass ORDER BY oid::regclass::text;
 
 ALTER TABLE fk_notpartitioned_fk VALIDATE CONSTRAINT fk_notpartitioned_fk_a_b_fkey;
 
 -- All constraints are now valid.
-SELECT conname, convalidated FROM pg_constraint WHERE conrelid = 'fk_notpartitioned_fk'::regclass;
+SELECT conname, convalidated FROM pg_constraint
+WHERE conrelid = 'fk_notpartitioned_fk'::regclass ORDER BY oid::regclass::text;
 
 DROP TABLE fk_notpartitioned_fk, fk_partitioned_pk;