Improve generated_stored test

It makes more sense to put the catalog sanity check at the end of the
test rather than at the beginning, so that it can also check whatever
the tests did rather than just whatever happened before the tests.

Suggested-by: jian he <jian.universality@gmail.com>

Discussion: https://www.postgresql.org/message-id/flat/a368248e-69e4-40be-9c07-6c3b5880b0a6@eisentraut.org

Author: petere

src/test/regress/expected/generated_stored.out

@@ -1,9 +1,3 @@
--- sanity check of system catalog
-SELECT attrelid, attname, attgenerated FROM pg_attribute WHERE attgenerated NOT IN ('', 's');
- attrelid | attname | attgenerated 
-----------+---------+--------------
-(0 rows)
-
 CREATE SCHEMA generated_stored_tests;
 GRANT USAGE ON SCHEMA generated_stored_tests TO PUBLIC;
 SET search_path = generated_stored_tests;
@@ -1356,3 +1350,9 @@ CREATE TABLE gtest28b (LIKE gtest28a INCLUDING GENERATED);
  c      | integer |           |          | 
  x      | integer |           |          | generated always as (b * 2) stored
 
+-- sanity check of system catalog
+SELECT attrelid, attname, attgenerated FROM pg_attribute WHERE attgenerated NOT IN ('', 's');
+ attrelid | attname | attgenerated 
+----------+---------+--------------
+(0 rows)
+

src/test/regress/sql/generated_stored.sql

@@ -1,7 +1,3 @@
--- sanity check of system catalog
-SELECT attrelid, attname, attgenerated FROM pg_attribute WHERE attgenerated NOT IN ('', 's');
-
-
 CREATE SCHEMA generated_stored_tests;
 GRANT USAGE ON SCHEMA generated_stored_tests TO PUBLIC;
 SET search_path = generated_stored_tests;
@@ -675,3 +671,7 @@ ALTER TABLE gtest28a DROP COLUMN a;
 CREATE TABLE gtest28b (LIKE gtest28a INCLUDING GENERATED);
 
 \d gtest28*
+
+
+-- sanity check of system catalog
+SELECT attrelid, attname, attgenerated FROM pg_attribute WHERE attgenerated NOT IN ('', 's');