Fix vertica comments for version 9 (#11479)

ingestion/src/metadata/ingestion/source/database/vertica/queries.py

@@ -21,22 +21,39 @@ import textwrap
 # So to fetch column comments we need to concat the table_name + projection infix + column name.
 # Example: querying `v_catalog.comments` we find an object_name for a column in the table vendor_dimension as
 # `vendor_dimension_super.vendor_name`. Note how this is the `_super` projection.
-# Then, our join looks for the match in `vendor_dimension_%.vendor_name`.
+# Then, our join looks for the match in `vendor_dimension_super.vendor_name`.
+# In case there are more than one projections available for a table then we pick up
+# comments from any one projection available for table
 # Note: This might not suit for all column scenarios, but currently we did not find a better way to join
 # v_catalog.comments with v_catalog.columns.
 VERTICA_GET_COLUMNS = textwrap.dedent(
     """
-        SELECT
+        WITH
+        column_projection as
+        (SELECT 
             column_name,
             data_type,
             column_default,
             is_nullable,
-          comment
-        FROM v_catalog.columns col
+            table_name,
+            table_schema,
+            proj.projection_name
+        FROM v_catalog.columns col,
+          v_catalog.projections proj
+        where proj.projection_id in (select 
+                min(projection_id) 
+            from v_catalog.projections sub_proj 
+            where col.table_id=sub_proj.anchor_table_id
+        ))
+        select
+          column_name,
+          data_type,
+          column_default,
+          is_nullable,
+          comment from column_projection col
         LEFT JOIN v_catalog.comments com
           ON com.object_type = 'COLUMN'
-          AND com.object_id = col.table_id
-          AND com.child_object = col.column_name
+          AND com.object_name = CONCAT(CONCAT(col.projection_name,'.'),col.column_name)
         WHERE lower(table_name) = '{table}'
         AND {schema_condition}
         UNION ALL