diff --git a/test/Snowflake_Tests/src/Snowflake_Spec.enso b/test/Snowflake_Tests/src/Snowflake_Spec.enso
index 38c5f7fe81b3..eb510964dafe 100644
--- a/test/Snowflake_Tests/src/Snowflake_Spec.enso
+++ b/test/Snowflake_Tests/src/Snowflake_Spec.enso
@@ -468,8 +468,8 @@ snowflake_specific_spec suite_builder default_connection db_name setup =
             col . cast Value_Type.Decimal . round 1 . value_type . should_equal (Value_Type.Decimal 38 0)
 
             col . cast Value_Type.Float . round use_bankers=True . value_type . should_equal Value_Type.Float
-            col . cast Value_Type.Integer . round use_bankers=True . value_type . should_equal (Value_Type.Decimal 38 0)
-            col . cast Value_Type.Decimal . round use_bankers=True . value_type . should_equal (Value_Type.Decimal 38 0)
+            col . cast Value_Type.Integer . round use_bankers=True . value_type . should_equal (Value_Type.Decimal 38 6)
+            col . cast Value_Type.Decimal . round use_bankers=True . value_type . should_equal (Value_Type.Decimal 38 6)
 
             col . cast Value_Type.Float . ceil . value_type . should_equal Value_Type.Float
             col . cast Value_Type.Integer . ceil . value_type . should_equal (Value_Type.Decimal 38 0)
diff --git a/test/Table_Tests/src/Common_Table_Operations/Column_Operations_Spec.enso b/test/Table_Tests/src/Common_Table_Operations/Column_Operations_Spec.enso
index e3ce1615dffb..ffa5b9c5af8c 100644
--- a/test/Table_Tests/src/Common_Table_Operations/Column_Operations_Spec.enso
+++ b/test/Table_Tests/src/Common_Table_Operations/Column_Operations_Spec.enso
@@ -132,11 +132,25 @@ type Names_Data
 type Lazy_Ref
     Value ~get
 
+type Connection_Data
+    Value ~data
+
+    connection self = self.data.at 0
+
+    setup create_connection_fn = Connection_Data.Value <|
+        connection = create_connection_fn Nothing
+        [connection]
+
+    teardown self =
+        self.connection.close
+
 add_specs suite_builder setup =
     prefix = setup.prefix
     table_builder = setup.table_builder
+    create_connection_fn = setup.create_connection_func
     light_table_builder = setup.light_table_builder
     pending_datetime = if setup.test_selection.date_time.not then "Date/Time operations are not supported by this backend."
+
     suite_builder.group prefix+"(Column_Operations_Spec) Rounding numeric tests" group_builder->
         round_one n dp=0 use_bankers=False =
             table = light_table_builder [["x", [n]]]
@@ -1749,27 +1763,33 @@ add_specs suite_builder setup =
 
     if setup.is_database then
         suite_builder.group prefix+"(Column_Operations_Spec) Column.let" group_builder->
-            group_builder.specify "Should allow the use of let-style CTEs" <|
-                t = table_builder [["X", [1, 2, 3, 4]], ["Y", [4, 3, 100, 200]], ["Z", [12.1, 23.4, -4.5, 44.33]]]
-                x = t.at "X"
-                y = t.at "Y"
-                z = t.at "Z"
-                a = ((x - 2.3) * (y + 1)) + z
-                b = (x - 2.3).let "xx" xx-> (xx * (y + 1)) + z
-                c = (x - 2.3).let "xx" xx-> (y + 1).let "yy" yy-> (xx * yy) + z
-                d = ((x - 2.3) * (y + 1)).let "xxyy" xxyy-> xxyy + z
-
-                r = a . rename "a" . to_table . set b "b" . set c "c" . set d "d" . read
-                r.at "a" . to_vector . should_equal [5.6000000000000005, 22.2, 66.20000000000002, 386.03000000000003]
-                r.at "a" . to_vector . should_equal (r.at "b" . to_vector)
-                r.at "a" . to_vector . should_equal (r.at "c" . to_vector)
-                r.at "a" . to_vector . should_equal (r.at "d" . to_vector)
-
-                a.to_table.to_sql . prepare . at 0 . should_not_contain "WITH"
-                b.to_table.to_sql . prepare . at 0 . should_contain 'xx_0'
-                c.to_table.to_sql . prepare . at 0 . should_contain 'xx_0'
-                c.to_table.to_sql . prepare . at 0 . should_contain 'yy_1'
-                d.to_table.to_sql . prepare . at 0 . should_contain 'xxyy_0'
+            connection_data = Connection_Data.setup create_connection_fn
+
+            group_builder.teardown <|
+                connection_data.teardown
+
+            if connection_data.connection.dialect.supports_nested_with_clause then
+                group_builder.specify "Should allow the use of let-style CTEs" <|
+                    t = table_builder [["X", [1, 2, 3, 4]], ["Y", [4, 3, 100, 200]], ["Z", [12.1, 23.4, -4.5, 44.33]]]
+                    x = t.at "X"
+                    y = t.at "Y"
+                    z = t.at "Z"
+                    a = ((x - 2.3) * (y + 1)) + z
+                    b = (x - 2.3).let "xx" xx-> (xx * (y + 1)) + z
+                    c = (x - 2.3).let "xx" xx-> (y + 1).let "yy" yy-> (xx * yy) + z
+                    d = ((x - 2.3) * (y + 1)).let "xxyy" xxyy-> xxyy + z
+
+                    r = t . set a "a" . set b "b" . set c "c" . set d "d" . order_by ["X"] . read
+                    r.at "a" . to_vector . should_equal [5.6000000000000005, 22.2, 66.20000000000002, 386.03000000000003]
+                    r.at "a" . to_vector . should_equal (r.at "b" . to_vector)
+                    r.at "a" . to_vector . should_equal (r.at "c" . to_vector)
+                    r.at "a" . to_vector . should_equal (r.at "d" . to_vector)
+
+                    a.to_table.to_sql . prepare . at 0 . should_not_contain "WITH"
+                    b.to_table.to_sql . prepare . at 0 . should_contain 'xx_0'
+                    c.to_table.to_sql . prepare . at 0 . should_contain 'xx_0'
+                    c.to_table.to_sql . prepare . at 0 . should_contain 'yy_1'
+                    d.to_table.to_sql . prepare . at 0 . should_contain 'xxyy_0'
 
     suite_builder.group prefix+"(Column_Operations_Spec) Table.make_constant_column" group_builder->
         group_builder.specify "Should allow the creation of constant columns" <|