v1.1.0 fixes

- Fixed ALTER TABLE ADD <column> <datatype> statement in macro oracle__alter_column_type
- Added example to test incremental materialization with a list of unique keys
- Added new macro oracle__alter_relation_add_remove_columns to add and remove columns

Author: aosingh

dbt/include/oracle/macros/adapters.sql

@@ -234,7 +234,7 @@
   {%- set tmp_column = column_name + "__dbt_alter" -%}
 
   {% call statement('alter_column_type 1', fetch_result=False) %}
-    alter table {{ relation.include(False, True, True).quote(schema=False, identifier=False) }} add column {{ tmp_column }} {{ new_column_type }}
+    alter table {{ relation.include(False, True, True).quote(schema=False, identifier=False) }} add {{ tmp_column }} {{ new_column_type }}
   {% endcall %}
   {% call statement('alter_column_type 2', fetch_result=False) %}
     update {{ relation.include(False, True, True).quote(schema=False, identifier=False)  }} set {{ tmp_column }} = {{ column_name }}

dbt/include/oracle/macros/columns.sql

@@ -0,0 +1,25 @@
+{% macro oracle__alter_relation_add_remove_columns(relation, add_columns, remove_columns) %}
+
+  {% if add_columns is none %}
+    {% set add_columns = [] %}
+  {% endif %}
+  {% if remove_columns is none %}
+    {% set remove_columns = [] %}
+  {% endif %}
+
+  {% set sql -%}
+
+     alter {{ relation.type }} {{ relation }}
+
+            {% for column in add_columns %}
+               add {{ column.name }} {{ column.data_type }}{{ ',' if not loop.last }}
+            {% endfor %}{{ ',' if add_columns and remove_columns }}
+
+            {% for column in remove_columns %}
+                drop column {{ column.name }}{{ ',' if not loop.last }}
+            {% endfor %}
+
+  {%- endset -%}
+
+  {% do run_query(sql) %}
+{% endmacro %}

dbt_adbs_test_project/models/demo/promotion_costs_for_direct_sales_channel_incr_merge_unique_keys.sql

@@ -0,0 +1,22 @@
+{{config(materialized='incremental',
+         on_schema_change='sync_all_columns',
+         unique_key=['prod_id', 'quantity_sold', 'time_id', 'promo_name'])}}
+WITH direct_sales_promo_cost AS (
+    SELECT s.prod_id,
+           s.quantity_sold,
+           s.amount_sold,
+           s.time_id,
+           c.channel_desc,
+           p.promo_name,
+           p.promo_cost
+    FROM {{ source('sh_database', 'sales') }} s,
+         {{ source('sh_database', 'promotions') }} p,
+         {{ source('sh_database', 'channels') }} c
+    WHERE s.channel_id = 3
+    AND s.promo_id = p.promo_id
+    AND s.channel_id = c.channel_id
+    {% if is_incremental() %}
+        AND s.time_id > (SELECT MAX(time_id) FROM {{ this }})
+    {% endif %}
+)
+SELECT * FROM direct_sales_promo_cost