wip: add ordinal position to Column class

core/dbt/adapters/base/column.py

@@ -20,6 +20,7 @@ class Column(JsonSchemaMixin):
     char_size: Optional[int] = None
     numeric_precision: Optional[Any] = None
     numeric_scale: Optional[Any] = None
+    ordinal_position: Optional[int] = None
 
     @classmethod
     def translate_type(cls, dtype: str) -> str:
@@ -38,6 +39,10 @@ class Column(JsonSchemaMixin):
     def quoted(self) -> str:
         return '"{}"'.format(self.column)
 
+    @property
+    def ordinal_position(self) -> int:
+        return self.ordinal_position
+
     @property
     def data_type(self) -> str:
         if self.is_string():

plugins/postgres/dbt/include/postgres/macros/adapters.sql

@@ -39,7 +39,8 @@
           data_type,
           character_maximum_length,
           numeric_precision,
-          numeric_scale
+          numeric_scale,
+          ordinal_position
 
       from {{ relation.information_schema('columns') }}
       where table_name = '{{ relation.identifier }}'
@@ -121,7 +122,7 @@
   Postgres tables have a maximum length off 63 characters, anything longer is silently truncated.
   Temp relations add a lot of extra characters to the end of table namers to ensure uniqueness.
   To prevent this going over the character limit, the base_relation name is truncated to ensure
-  that name + suffix + uniquestring is < 63 characters.  
+  that name + suffix + uniquestring is < 63 characters.
 #}
 {% macro postgres__make_temp_relation(base_relation, suffix) %}
     {% set dt = modules.datetime.datetime.now() %}

plugins/redshift/dbt/include/redshift/macros/adapters.sql

@@ -86,7 +86,8 @@
           data_type,
           character_maximum_length,
           numeric_precision,
-          numeric_scale
+          numeric_scale,
+          ordinal_position
 
         from information_schema."columns"
         where table_name = '{{ relation.identifier }}'
@@ -121,7 +122,8 @@
             SPLIT_PART(REGEXP_SUBSTR(col_type, '[0-9,]+'), ',', 2),
             '')::int
           else null
-        end as numeric_scale
+        end as numeric_scale,
+        col_num as ordinal_position
 
       from pg_get_late_binding_view_cols()
       cols(view_schema name, view_name name, col_name name,
@@ -254,4 +256,3 @@
 {% macro redshift__alter_column_comment(relation, column_dict) %}
   {% do return(postgres__alter_column_comment(relation, column_dict)) %}
 {% endmacro %}
-