diff --git a/src/test/regress/expected/foreign_data.out b/src/test/regress/expected/foreign_data.out
index b039d005d7d38308583c4741c231fb2fef2b56e9..bbd1f015e392f4bd2b6da5ca75985bb6fcb90cb9 100644
--- a/src/test/regress/expected/foreign_data.out
+++ b/src/test/regress/expected/foreign_data.out
@@ -284,7 +284,6 @@ CREATE SERVER s3 TYPE 'oracle' FOREIGN DATA WRAPPER foo;
 CREATE SERVER s4 TYPE 'oracle' FOREIGN DATA WRAPPER foo OPTIONS (host 'a', dbname 'b');
 CREATE SERVER s5 VERSION '15.0' FOREIGN DATA WRAPPER foo;
 CREATE SERVER s6 VERSION '16.0' FOREIGN DATA WRAPPER foo OPTIONS (host 'a', dbname 'b');
-CREATE SERVER "S6" FOREIGN DATA WRAPPER foo OPTIONS (mixed_case_names 'true');
 CREATE SERVER s7 TYPE 'oracle' VERSION '17.0' FOREIGN DATA WRAPPER foo OPTIONS (host 'a', dbname 'b');
 CREATE SERVER s8 FOREIGN DATA WRAPPER postgresql OPTIONS (foo '1'); -- ERROR
 ERROR:  invalid option "foo" to server
@@ -294,7 +293,6 @@ CREATE SERVER s8 FOREIGN DATA WRAPPER postgresql OPTIONS (host 'localhost', dbna
                                                 List of foreign servers
  Name |       Owner       | Foreign-data wrapper | Access privileges |  Type  | Version |           Options            
 ------+-------------------+----------------------+-------------------+--------+---------+------------------------------
- S6   | foreign_data_user | foo                  |                   |        |         | {mixed_case_names=true}
  s1   | foreign_data_user | foo                  |                   |        |         | 
  s2   | foreign_data_user | foo                  |                   |        |         | {host=a,dbname=b}
  s3   | foreign_data_user | foo                  |                   | oracle |         | 
@@ -303,7 +301,7 @@ CREATE SERVER s8 FOREIGN DATA WRAPPER postgresql OPTIONS (host 'localhost', dbna
  s6   | foreign_data_user | foo                  |                   |        | 16.0    | {host=a,dbname=b}
  s7   | foreign_data_user | foo                  |                   | oracle | 17.0    | {host=a,dbname=b}
  s8   | foreign_data_user | postgresql           |                   |        |         | {host=localhost,dbname=s8db}
-(9 rows)
+(8 rows)
 
 SET ROLE regress_test_role;
 CREATE SERVER st1 FOREIGN DATA WRAPPER foo;                 -- ERROR: no usage on FDW
@@ -317,7 +315,6 @@ RESET ROLE;
                                                 List of foreign servers
  Name |       Owner       | Foreign-data wrapper | Access privileges |  Type  | Version |           Options            
 ------+-------------------+----------------------+-------------------+--------+---------+------------------------------
- S6   | foreign_data_user | foo                  |                   |        |         | {mixed_case_names=true}
  s1   | foreign_data_user | foo                  |                   |        |         | 
  s2   | foreign_data_user | foo                  |                   |        |         | {host=a,dbname=b}
  s3   | foreign_data_user | foo                  |                   | oracle |         | 
@@ -327,7 +324,7 @@ RESET ROLE;
  s7   | foreign_data_user | foo                  |                   | oracle | 17.0    | {host=a,dbname=b}
  s8   | foreign_data_user | postgresql           |                   |        |         | {host=localhost,dbname=s8db}
  st1  | regress_test_role | foo                  |                   |        |         | 
-(10 rows)
+(9 rows)
 
 REVOKE USAGE ON FOREIGN DATA WRAPPER foo FROM regress_test_role;
 GRANT USAGE ON FOREIGN DATA WRAPPER foo TO regress_test_indirect;
@@ -342,7 +339,6 @@ CREATE SERVER st2 FOREIGN DATA WRAPPER foo;
                                                 List of foreign servers
  Name |       Owner       | Foreign-data wrapper | Access privileges |  Type  | Version |           Options            
 ------+-------------------+----------------------+-------------------+--------+---------+------------------------------
- S6   | foreign_data_user | foo                  |                   |        |         | {mixed_case_names=true}
  s1   | foreign_data_user | foo                  |                   |        |         | 
  s2   | foreign_data_user | foo                  |                   |        |         | {host=a,dbname=b}
  s3   | foreign_data_user | foo                  |                   | oracle |         | 
@@ -353,7 +349,7 @@ CREATE SERVER st2 FOREIGN DATA WRAPPER foo;
  s8   | foreign_data_user | postgresql           |                   |        |         | {host=localhost,dbname=s8db}
  st1  | regress_test_role | foo                  |                   |        |         | 
  st2  | regress_test_role | foo                  |                   |        |         | 
-(11 rows)
+(10 rows)
 
 RESET ROLE;
 REVOKE regress_test_indirect FROM regress_test_role;
@@ -373,7 +369,6 @@ GRANT USAGE ON FOREIGN SERVER s6 TO regress_test_role2 WITH GRANT OPTION;
                                                            List of foreign servers
  Name |       Owner       | Foreign-data wrapper |            Access privileges            |  Type  | Version |           Options            
 ------+-------------------+----------------------+-----------------------------------------+--------+---------+------------------------------
- S6   | foreign_data_user | foo                  |                                         |        |         | {mixed_case_names=true}
  s1   | foreign_data_user | foo                  | foreign_data_user=U/foreign_data_user   |        | 1.0     | {servername=s1}
                                                  : regress_test_role=U/foreign_data_user                        
  s2   | foreign_data_user | foo                  |                                         |        | 1.1     | {host=a,dbname=b}
@@ -386,7 +381,7 @@ GRANT USAGE ON FOREIGN SERVER s6 TO regress_test_role2 WITH GRANT OPTION;
  s8   | foreign_data_user | postgresql           |                                         |        |         | {host=localhost,dbname=s8db}
  st1  | regress_test_role | foo                  |                                         |        |         | 
  st2  | regress_test_role | foo                  |                                         |        |         | 
-(11 rows)
+(10 rows)
 
 SET ROLE regress_test_role;
 ALTER SERVER s1 VERSION '1.1';                              -- ERROR
@@ -425,7 +420,6 @@ access to foreign-data wrapper foo
                                                               List of foreign servers
  Name |         Owner         | Foreign-data wrapper |            Access privileges            |  Type  | Version |             Options             
 ------+-----------------------+----------------------+-----------------------------------------+--------+---------+---------------------------------
- S6   | foreign_data_user     | foo                  |                                         |        |         | {mixed_case_names=true}
  s1   | regress_test_indirect | foo                  | foreign_data_user=U/foreign_data_user   |        | 1.1     | {servername=s1}
                                                      : regress_test_role=U/foreign_data_user                        
  s2   | foreign_data_user     | foo                  |                                         |        | 1.1     | {host=a,dbname=b}
@@ -438,7 +432,7 @@ access to foreign-data wrapper foo
  s8   | foreign_data_user     | postgresql           |                                         |        |         | {dbname=db1,connect_timeout=30}
  st1  | regress_test_role     | foo                  |                                         |        |         | 
  st2  | regress_test_role     | foo                  |                                         |        |         | 
-(11 rows)
+(10 rows)
 
 -- DROP SERVER
 DROP SERVER nonexistent;                                    -- ERROR
@@ -449,7 +443,6 @@ NOTICE:  server "nonexistent" does not exist, skipping
                List of foreign servers
  Name |         Owner         | Foreign-data wrapper 
 ------+-----------------------+----------------------
- S6   | foreign_data_user     | foo
  s1   | regress_test_indirect | foo
  s2   | foreign_data_user     | foo
  s3   | foreign_data_user     | foo
@@ -460,7 +453,7 @@ NOTICE:  server "nonexistent" does not exist, skipping
  s8   | foreign_data_user     | postgresql
  st1  | regress_test_role     | foo
  st2  | regress_test_role     | foo
-(11 rows)
+(10 rows)
 
 SET ROLE regress_test_role;
 DROP SERVER s2;                                             -- ERROR
@@ -471,7 +464,6 @@ RESET ROLE;
              List of foreign servers
  Name |       Owner       | Foreign-data wrapper 
 ------+-------------------+----------------------
- S6   | foreign_data_user | foo
  s2   | foreign_data_user | foo
  s3   | foreign_data_user | foo
  s4   | foreign_data_user | foo
@@ -481,7 +473,7 @@ RESET ROLE;
  s8   | foreign_data_user | postgresql
  st1  | regress_test_role | foo
  st2  | regress_test_role | foo
-(10 rows)
+(9 rows)
 
 ALTER SERVER s2 OWNER TO regress_test_role;
 SET ROLE regress_test_role;
@@ -491,7 +483,6 @@ RESET ROLE;
              List of foreign servers
  Name |       Owner       | Foreign-data wrapper 
 ------+-------------------+----------------------
- S6   | foreign_data_user | foo
  s3   | foreign_data_user | foo
  s4   | foreign_data_user | foo
  s5   | foreign_data_user | foo
@@ -500,7 +491,7 @@ RESET ROLE;
  s8   | foreign_data_user | postgresql
  st1  | regress_test_role | foo
  st2  | regress_test_role | foo
-(9 rows)
+(8 rows)
 
 CREATE USER MAPPING FOR current_user SERVER s3;
 \deu
@@ -520,7 +511,6 @@ NOTICE:  drop cascades to user mapping for foreign_data_user
              List of foreign servers
  Name |       Owner       | Foreign-data wrapper 
 ------+-------------------+----------------------
- S6   | foreign_data_user | foo
  s4   | foreign_data_user | foo
  s5   | foreign_data_user | foo
  s6   | foreign_data_user | foo
@@ -528,7 +518,7 @@ NOTICE:  drop cascades to user mapping for foreign_data_user
  s8   | foreign_data_user | postgresql
  st1  | regress_test_role | foo
  st2  | regress_test_role | foo
-(8 rows)
+(7 rows)
 
 \deu
 List of user mappings
@@ -559,7 +549,6 @@ ERROR:  must be owner of foreign server s7
 CREATE USER MAPPING FOR public SERVER s8;                   -- ERROR
 ERROR:  must be owner of foreign server s8
 RESET ROLE;
-CREATE USER MAPPING FOR current_user SERVER "S6" OPTIONS (username 'test_mixed_case');
 ALTER SERVER st1 OWNER TO regress_test_indirect;
 SET ROLE regress_test_role;
 CREATE USER MAPPING FOR current_user SERVER st1 OPTIONS (username 'bob', password 'boo');
@@ -569,7 +558,6 @@ RESET ROLE;
    List of user mappings
  Server |     Username      
 --------+-------------------
- S6     | foreign_data_user
  s4     | foreign_data_user
  s4     | public
  s5     | regress_test_role
@@ -577,7 +565,7 @@ RESET ROLE;
  s8     | foreign_data_user
  st1    | public
  st1    | regress_test_role
-(8 rows)
+(7 rows)
 
 -- ALTER USER MAPPING
 ALTER USER MAPPING FOR bob SERVER s4 OPTIONS (gotcha 'true');   -- ERROR
@@ -600,7 +588,6 @@ RESET ROLE;
                   List of user mappings
  Server |     Username      |           Options           
 --------+-------------------+-----------------------------
- S6     | foreign_data_user | {username=test_mixed_case}
  s4     | foreign_data_user | 
  s4     | public            | {"mapping=is public"}
  s5     | regress_test_role | {modified=1}
@@ -608,7 +595,7 @@ RESET ROLE;
  s8     | foreign_data_user | {password=public}
  st1    | public            | {modified=1}
  st1    | regress_test_role | {username=bob,password=boo}
-(8 rows)
+(7 rows)
 
 -- DROP USER MAPPING
 DROP USER MAPPING FOR bob SERVER s4;                        -- ERROR
@@ -633,7 +620,6 @@ DROP SERVER s7;
    List of user mappings
  Server |     Username      
 --------+-------------------
- S6     | foreign_data_user
  s4     | foreign_data_user
  s4     | public
  s5     | regress_test_role
@@ -642,7 +628,7 @@ DROP SERVER s7;
  s8     | public
  st1    | public
  st1    | regress_test_role
-(9 rows)
+(8 rows)
 
 -- Information schema
 SELECT * FROM information_schema.foreign_data_wrappers ORDER BY 1, 2;
@@ -662,26 +648,24 @@ SELECT * FROM information_schema.foreign_data_wrapper_options ORDER BY 1, 2, 3;
 SELECT * FROM information_schema.foreign_servers ORDER BY 1, 2;
  foreign_server_catalog | foreign_server_name | foreign_data_wrapper_catalog | foreign_data_wrapper_name | foreign_server_type | foreign_server_version | authorization_identifier 
 ------------------------+---------------------+------------------------------+---------------------------+---------------------+------------------------+--------------------------
- regression             | S6                  | regression                   | foo                       |                     |                        | foreign_data_user
  regression             | s4                  | regression                   | foo                       | oracle              |                        | foreign_data_user
  regression             | s5                  | regression                   | foo                       |                     | 15.0                   | regress_test_role
  regression             | s6                  | regression                   | foo                       |                     | 16.0                   | regress_test_indirect
  regression             | s8                  | regression                   | postgresql                |                     |                        | foreign_data_user
  regression             | st1                 | regression                   | foo                       |                     |                        | regress_test_indirect
  regression             | st2                 | regression                   | foo                       |                     |                        | regress_test_role
-(7 rows)
+(6 rows)
 
 SELECT * FROM information_schema.foreign_server_options ORDER BY 1, 2, 3;
- foreign_server_catalog | foreign_server_name |   option_name    | option_value 
-------------------------+---------------------+------------------+--------------
- regression             | S6                  | mixed_case_names | true
- regression             | s4                  | dbname           | b
- regression             | s4                  | host             | a
- regression             | s6                  | dbname           | b
- regression             | s6                  | host             | a
- regression             | s8                  | connect_timeout  | 30
- regression             | s8                  | dbname           | db1
-(7 rows)
+ foreign_server_catalog | foreign_server_name |   option_name   | option_value 
+------------------------+---------------------+-----------------+--------------
+ regression             | s4                  | dbname          | b
+ regression             | s4                  | host            | a
+ regression             | s6                  | dbname          | b
+ regression             | s6                  | host            | a
+ regression             | s8                  | connect_timeout | 30
+ regression             | s8                  | dbname          | db1
+(6 rows)
 
 SELECT * FROM information_schema.user_mappings ORDER BY 1, 2, 3;
  authorization_identifier | foreign_server_catalog | foreign_server_name 
@@ -689,26 +673,24 @@ SELECT * FROM information_schema.user_mappings ORDER BY 1, 2, 3;
  PUBLIC                   | regression             | s4
  PUBLIC                   | regression             | s8
  PUBLIC                   | regression             | st1
- foreign_data_user        | regression             | S6
  foreign_data_user        | regression             | s4
  foreign_data_user        | regression             | s8
  regress_test_role        | regression             | s5
  regress_test_role        | regression             | s6
  regress_test_role        | regression             | st1
-(9 rows)
+(8 rows)
 
 SELECT * FROM information_schema.user_mapping_options ORDER BY 1, 2, 3, 4;
- authorization_identifier | foreign_server_catalog | foreign_server_name | option_name |  option_value   
---------------------------+------------------------+---------------------+-------------+-----------------
+ authorization_identifier | foreign_server_catalog | foreign_server_name | option_name | option_value 
+--------------------------+------------------------+---------------------+-------------+--------------
  PUBLIC                   | regression             | s4                  | mapping     | is public
  PUBLIC                   | regression             | st1                 | modified    | 1
- foreign_data_user        | regression             | S6                  | username    | test_mixed_case
  foreign_data_user        | regression             | s8                  | password    | public
  regress_test_role        | regression             | s5                  | modified    | 1
  regress_test_role        | regression             | s6                  | username    | test
  regress_test_role        | regression             | st1                 | password    | boo
  regress_test_role        | regression             | st1                 | username    | bob
-(8 rows)
+(7 rows)
 
 SELECT * FROM information_schema.usage_privileges WHERE object_type LIKE 'FOREIGN%' ORDER BY 1, 2, 3, 4, 5;
       grantor      |        grantee        | object_catalog | object_schema | object_name |     object_type      | privilege_type | is_grantable 
@@ -971,12 +953,10 @@ NOTICE:  drop cascades to user mapping for public
 DROP SERVER st2;
 DROP USER MAPPING FOR regress_test_role SERVER s6;
 DROP FOREIGN DATA WRAPPER foo CASCADE;
-NOTICE:  drop cascades to 6 other objects
+NOTICE:  drop cascades to 4 other objects
 DETAIL:  drop cascades to server s4
 drop cascades to user mapping for foreign_data_user
 drop cascades to server s6
-drop cascades to server S6
-drop cascades to user mapping for foreign_data_user
 drop cascades to server s9
 DROP SERVER s8 CASCADE;
 NOTICE:  drop cascades to 2 other objects
diff --git a/src/test/regress/sql/foreign_data.sql b/src/test/regress/sql/foreign_data.sql
index 03de174a6bc6cb806ab401696218a5b50b9536c0..946df17d1c5405b7c2a59c6c862e42cebb7fb774 100644
--- a/src/test/regress/sql/foreign_data.sql
+++ b/src/test/regress/sql/foreign_data.sql
@@ -126,7 +126,6 @@ CREATE SERVER s3 TYPE 'oracle' FOREIGN DATA WRAPPER foo;
 CREATE SERVER s4 TYPE 'oracle' FOREIGN DATA WRAPPER foo OPTIONS (host 'a', dbname 'b');
 CREATE SERVER s5 VERSION '15.0' FOREIGN DATA WRAPPER foo;
 CREATE SERVER s6 VERSION '16.0' FOREIGN DATA WRAPPER foo OPTIONS (host 'a', dbname 'b');
-CREATE SERVER "S6" FOREIGN DATA WRAPPER foo OPTIONS (mixed_case_names 'true');
 CREATE SERVER s7 TYPE 'oracle' VERSION '17.0' FOREIGN DATA WRAPPER foo OPTIONS (host 'a', dbname 'b');
 CREATE SERVER s8 FOREIGN DATA WRAPPER postgresql OPTIONS (foo '1'); -- ERROR
 CREATE SERVER s8 FOREIGN DATA WRAPPER postgresql OPTIONS (host 'localhost', dbname 's8db');
@@ -224,7 +223,6 @@ CREATE USER MAPPING FOR current_user SERVER s6 OPTIONS (username 'test');
 CREATE USER MAPPING FOR current_user SERVER s7;             -- ERROR
 CREATE USER MAPPING FOR public SERVER s8;                   -- ERROR
 RESET ROLE;
-CREATE USER MAPPING FOR current_user SERVER "S6" OPTIONS (username 'test_mixed_case');
 
 ALTER SERVER st1 OWNER TO regress_test_indirect;
 SET ROLE regress_test_role;