Allow for local compile of incremental models. (duneanalytics#2403)

* base is_incremental

* add force-incremental variable

macros/dune/is_incremental.sql

@@ -0,0 +1,18 @@
+{% macro is_incremental() %}
+    {#-- allow for command line compile of incremental models  #}
+    {#-- Usage: dbt compile --vars '{force-incremental: True}'  #}
+    {% if var('force-incremental', False) %}
+        {{ return(True) }}
+    {% endif %}
+
+    {#-- do not run introspective queries in parsing #}
+    {% if not execute %}
+        {{ return(False) }}
+    {% else %}
+        {% set relation = adapter.get_relation(this.database, this.schema, this.table) %}
+        {{ return(relation is not none
+                  and relation.type == 'table'
+                  and model.config.materialized == 'incremental'
+                  and not should_full_refresh()) }}
+    {% endif %}
+{% endmacro %}

macros/dune/macros_schema.yml

@@ -9,7 +9,7 @@ macros:
         description: "Custom schema name"
       - name: node
         type: column name or expression
-        description: "Node"  
+        description: "Node"
 
   - name: generate_alias_name
     description: "This overrides the dbt-core function for setting aliases. For PR test, the alias is set to the user schema and file name. "
@@ -38,4 +38,10 @@ macros:
 
   - name: spark__create_csv_table
     description: >
-      Same as create_table_as but for seeds with spark package
+      Same as create_table_as but for seeds with spark package
+
+  - name: is_incremental
+    description: >
+      Overrides the core is_incremental marco to allow the usage of a force-incremental command line variable.
+      This enables us to easily get the compiled incremental models. 
+      Example usage: dbt compile --vars '{force-incremental: True}'