Handling overflow and incorrect outputs in case of certain money and smallmoney arithmetic and math functions.

There were certain issues found both w.r.t overflow handling and certain functions and operations giving incorrect result for money and smallmoney datatype. This commit addresses those issues.

Issue #1: Overflow of smallmoney arithmetic leading to TDS hang.
Issue #2: Unhandled overflow cases leading to incorrect output.
Issue #3: Fixeddecimal operators being resolved for smallmoney functions and operations leading to incorrect results.

Task: BABEL-5745, BABEL-5757, BABEL-5756, BABEL-5747, BABEL-5754

Signed-off-by: Ayush Shah <[email protected]>

Author: ayushdsh

contrib/babelfishpg_common/sql/upgrades/babelfish_common_helper--5.2.0--5.3.0.sql

@@ -553,7 +553,7 @@ DROP OPERATOR IF EXISTS sys.+ (sys.BIT, sys.SMALLMONEY);
 CREATE OPERATOR sys.+ (
     LEFTARG    = sys.BIT,
     RIGHTARG   = sys.SMALLMONEY,
-    PROCEDURE  = bitsmallmoneymi
+    PROCEDURE  = bitsmallmoneypl
 );
 
 DROP OPERATOR IF EXISTS sys.- (sys.SMALLMONEY, sys.BIT);

test/JDBC/expected/parallel_query/babel_varbinary-vu-verify.out

@@ -707,13 +707,15 @@ GO
 ~~START~~
 text
 Query Text: Select varbinary_col from babel_varbinary_test_table2 where varbinary_col < cast(0x123 as varbinary(100)) + cast(0x123 as varbinary(100))
-Index Only Scan using babel_varbinary_test_indbabel_v93c04b51675320c0200287b60808b914 on babel_varbinary_test_table2
-  Index Cond: (varbinary_col < '0x01230123'::bbf_varbinary)
+Gather
+  Workers Planned: 4
+  ->  Parallel Seq Scan on babel_varbinary_test_table2
+        Filter: ((varbinary_col)::bbf_varbinary < '0x01230123'::bbf_varbinary)
 ~~END~~
 
 ~~START~~
 text
-Babelfish T-SQL Batch Parsing Time: 3.989 ms
+Babelfish T-SQL Batch Parsing Time: 7.781 ms
 ~~END~~
 
 
@@ -722,13 +724,15 @@ GO
 ~~START~~
 text
 Query Text: Select varbinary_col from babel_varbinary_test_table2 where varbinary_col < cast(0x123 as varbinary(max)) + cast(0x123 as varbinary(max))
-Index Only Scan using babel_varbinary_test_indbabel_v93c04b51675320c0200287b60808b914 on babel_varbinary_test_table2
-  Index Cond: (varbinary_col < '0x01230123'::bbf_varbinary)
+Gather
+  Workers Planned: 4
+  ->  Parallel Seq Scan on babel_varbinary_test_table2
+        Filter: ((varbinary_col)::bbf_varbinary < '0x01230123'::bbf_varbinary)
 ~~END~~
 
 ~~START~~
 text
-Babelfish T-SQL Batch Parsing Time: 0.177 ms
+Babelfish T-SQL Batch Parsing Time: 0.217 ms
 ~~END~~
 
 
@@ -737,13 +741,15 @@ GO
 ~~START~~
 text
 Query Text: Select varbinary_col from babel_varbinary_test_table2 where varbinary_col > cast(0x123 as varbinary(max)) + cast(0x123 as varbinary(max))
-Index Only Scan using babel_varbinary_test_indbabel_v93c04b51675320c0200287b60808b914 on babel_varbinary_test_table2
-  Index Cond: (varbinary_col > '0x01230123'::bbf_varbinary)
+Gather
+  Workers Planned: 4
+  ->  Parallel Seq Scan on babel_varbinary_test_table2
+        Filter: ((varbinary_col)::bbf_varbinary > '0x01230123'::bbf_varbinary)
 ~~END~~
 
 ~~START~~
 text
-Babelfish T-SQL Batch Parsing Time: 3.744 ms
+Babelfish T-SQL Batch Parsing Time: 7.684 ms
 ~~END~~
 
 
@@ -754,15 +760,15 @@ text
 Query Text: select count(*) from babel_varbinary_test_table2 where varbinary_col > cast(0x123 as varbinary(max)) + cast(0x123 as varbinary(max))
 Finalize Aggregate
   ->  Gather
-        Workers Planned: 2
+        Workers Planned: 4
         ->  Partial Aggregate
               ->  Parallel Seq Scan on babel_varbinary_test_table2
                     Filter: ((varbinary_col)::bbf_varbinary > '0x01230123'::bbf_varbinary)
 ~~END~~
 
 ~~START~~
 text
-Babelfish T-SQL Batch Parsing Time: 17.049 ms
+Babelfish T-SQL Batch Parsing Time: 33.697 ms
 ~~END~~
 
 
@@ -773,15 +779,15 @@ text
 Query Text: select count(*) from babel_varbinary_test_table2 where varbinary_col < cast(0x123 as varbinary(max)) + cast(0x123 as varbinary(max))
 Finalize Aggregate
   ->  Gather
-        Workers Planned: 2
+        Workers Planned: 4
         ->  Partial Aggregate
               ->  Parallel Seq Scan on babel_varbinary_test_table2
                     Filter: ((varbinary_col)::bbf_varbinary < '0x01230123'::bbf_varbinary)
 ~~END~~
 
 ~~START~~
 text
-Babelfish T-SQL Batch Parsing Time: 0.152 ms
+Babelfish T-SQL Batch Parsing Time: 0.216 ms
 ~~END~~