diff --git a/dbt/include/bigquery/macros/adapters/columns.sql b/dbt/include/bigquery/macros/adapters/columns.sql
index c540f1e2d..ab8c42945 100644
--- a/dbt/include/bigquery/macros/adapters/columns.sql
+++ b/dbt/include/bigquery/macros/adapters/columns.sql
@@ -2,6 +2,15 @@
     {%- if select_sql_header is not none -%}
     {{ select_sql_header }}
     {%- endif -%}
+    {%- set contract_config = config.get('contract') -%}
+    {%- if contract_config.enforced and '_dbt_max_partition' in compiled_code -%}
+        {%- set raw_partition_by = config.get('partition_by', none) -%}
+        {%- set partition_by = adapter.parse_partition_by(raw_partition_by) -%}
+
+        declare _dbt_max_partition {{ partition_by.data_type_for_partition() }} default (
+        select max({{ partition_by.field }}) from {{ this }}
+        where {{ partition_by.field }} is not null );
+    {%- endif -%}
     select * from (
         {{ select_sql }}
     ) as __dbt_sbq