Update expected output of some test files when parallel query is enfo…

…rced (2_X_DEV) (#2187)

Update expected output of some test files in case of parallel query as query plan changed. Also unblock these tests from parallel query jdbc ignore file. 

Cherry-pick commit 8efbb63 from BABEL_3_X_DEV to BABEL_2_X_DEV. 

Reason for expected output diff in case of parallel query mode - 

```
# Output rows ORDER changes.
BABEL-2514 - order changes because of UNION
BABEL-2998 - order changes because of UNION  (updated expected output for this according to BABEL_2_X_DEV as commit that fixed this tests is not cherry-picked from BABEL_3_X_DEV)
BABEL-328-vu-verify - order changes because of JOIN
TestSQLQueries - order changes because of JOIN

BABEL-1444 - We don't share state of the GUC "role" with parallel worker which will result in current_setting('role') to return none

# Query plan change
BABEL-1363
BABEL-2843
BABEL-2844
BABEL-2902
BABEL-2903
BABEL-3248
BABEL-3295
BABEL-3513-vu-prepare
BABEL-3513-vu-verify
BABEL-4281
babel_collection
binary-index-vu-verify

```

Task: BABEL-4643
Signed-off-by: Sandeep Kumawat <[email protected]>

contrib/babelfishpg_tsql/sql/test/babel_collation.sql

@@ -1,3 +1,4 @@
+-- parallel_query_expected
 -- nvarchar is not supported in PG
 create table testing1(col nvarchar(60)); -- expect this to fail in the Postgres dialect
 

test/JDBC/expected/BABEL-2902.out

@@ -1,4 +1,3 @@
-
 -- psql
 -- Test setup --
 ALTER SYSTEM SET babelfishpg_tsql.migration_mode = 'multi-db';

test/JDBC/expected/parallel_query/BABEL-1444.out

@@ -0,0 +1,263 @@
+USE MASTER;
+GO
+
+DECLARE @usr CHAR(30)
+DECLARE @cur_usr CHAR(30)
+SET @usr = user
+SET @cur_usr = current_user
+SELECT 'user: '+ @usr
+SELECT 'current_user: '+ @cur_usr
+GO
+~~START~~
+varchar
+user: dbo                           
+~~END~~
+
+~~START~~
+varchar
+current_user: dbo                           
+~~END~~
+
+
+CREATE TABLE dbo.t1
+(id INT IDENTITY(100, 1) NOT NULL,
+ description VARCHAR(30) NOT NULL,
+ usr VARCHAR(30) NOT NULL DEFAULT USER,
+ cur_usr VARCHAR(30) NOT NULL DEFAULT CURRENT_USER);
+GO
+
+INSERT INTO dbo.t1 (description) VALUES ('Orange');
+INSERT INTO dbo.t1 (description) VALUES ('Blue');
+INSERT INTO dbo.t1 (description, usr) VALUES ('Green', 'Bob');
+INSERT INTO dbo.t1 (description, cur_usr) VALUES ('Purple', 'Alice');
+INSERT INTO dbo.t1 (description, usr, cur_usr) VALUES ('Red', 'Mike', 'Dave');
+GO
+~~ROW COUNT: 1~~
+
+~~ROW COUNT: 1~~
+
+~~ROW COUNT: 1~~
+
+~~ROW COUNT: 1~~
+
+~~ROW COUNT: 1~~
+
+
+SELECT * FROM dbo.t1 ORDER BY id;  
+GO
+~~START~~
+int#!#varchar#!#varchar#!#varchar
+100#!#Orange#!#dbo#!#dbo
+101#!#Blue#!#dbo#!#dbo
+102#!#Green#!#Bob#!#dbo
+103#!#Purple#!#dbo#!#Alice
+104#!#Red#!#Mike#!#Dave
+~~END~~
+
+
+DROP TABLE dbo.t1;
+GO
+
+-- Test properties after USE
+CREATE DATABASE db1;
+GO
+
+SELECT current_setting('role');
+GO
+~~START~~
+text
+none
+~~END~~
+
+SELECT current_setting('search_path');
+GO
+~~START~~
+text
+master_dbo, "$user", sys, pg_catalog
+~~END~~
+
+SELECT session_user, current_user, user;
+GO
+~~START~~
+nvarchar#!#varchar#!#nvarchar
+dbo#!#dbo#!#dbo
+~~END~~
+
+SELECT user_name();
+GO
+~~START~~
+nvarchar
+dbo
+~~END~~
+
+
+USE db1;
+GO
+
+SELECT current_setting('role');
+GO
+~~START~~
+text
+none
+~~END~~
+
+SELECT current_setting('search_path');
+GO
+~~START~~
+text
+dbo, "$user", sys, pg_catalog
+~~END~~
+
+SELECT session_user, current_user, user;
+GO
+~~START~~
+nvarchar#!#varchar#!#nvarchar
+dbo#!#dbo#!#dbo
+~~END~~
+
+SELECT user_name();
+GO
+~~START~~
+nvarchar
+dbo
+~~END~~
+
+
+-- Error: Test DROP
+DROP DATABASE db1;
+GO
+~~ERROR (Code: 33557097)~~
+
+~~ERROR (Message: Cannot drop database "db1" because it is currently in use)~~
+
+
+SELECT current_setting('role');
+GO
+~~START~~
+text
+none
+~~END~~
+
+SELECT current_setting('search_path');
+GO
+~~START~~
+text
+dbo, "$user", sys, pg_catalog
+~~END~~
+
+SELECT session_user, current_user, user;
+GO
+~~START~~
+nvarchar#!#varchar#!#nvarchar
+dbo#!#dbo#!#dbo
+~~END~~
+
+SELECT user_name();
+GO
+~~START~~
+nvarchar
+dbo
+~~END~~
+
+
+-- Test DROP when using another database
+USE MASTER;
+GO
+
+SELECT current_setting('role');
+GO
+~~START~~
+text
+none
+~~END~~
+
+SELECT current_setting('search_path');
+GO
+~~START~~
+text
+master_dbo, "$user", sys, pg_catalog
+~~END~~
+
+SELECT session_user, current_user, user;
+GO
+~~START~~
+nvarchar#!#varchar#!#nvarchar
+dbo#!#dbo#!#dbo
+~~END~~
+
+SELECT user_name();
+GO
+~~START~~
+nvarchar
+dbo
+~~END~~
+
+
+DROP DATABASE db1;
+GO
+
+SELECT current_setting('role');
+GO
+~~START~~
+text
+none
+~~END~~
+
+SELECT current_setting('search_path');
+GO
+~~START~~
+text
+master_dbo, "$user", sys, pg_catalog
+~~END~~
+
+SELECT session_user, current_user, user;
+GO
+~~START~~
+nvarchar#!#varchar#!#nvarchar
+dbo#!#dbo#!#dbo
+~~END~~
+
+SELECT user_name();
+GO
+~~START~~
+nvarchar
+dbo
+~~END~~
+
+
+-- Test CREATE
+CREATE DATABASE db1;
+GO
+
+SELECT current_setting('role');
+GO
+~~START~~
+text
+none
+~~END~~
+
+SELECT current_setting('search_path');
+GO
+~~START~~
+text
+master_dbo, "$user", sys, pg_catalog
+~~END~~
+
+SELECT session_user, current_user, user;
+GO
+~~START~~
+nvarchar#!#varchar#!#nvarchar
+dbo#!#dbo#!#dbo
+~~END~~
+
+SELECT user_name();
+GO
+~~START~~
+nvarchar
+dbo
+~~END~~
+
+
+-- Clean up
+DROP DATABASE db1;
+GO