From 5717b109d358844e0f085565b93e74cbe469ecb0 Mon Sep 17 00:00:00 2001
From: Joel Labes <joel.labes@dbtlabs.com>
Date: Thu, 3 Mar 2022 14:24:19 +1300
Subject: [PATCH] Fix union_relations error when no include/exclude provided

* Fix union_relations error when no include/exclude provided (#509)

* Update CHANGELOG.md
---
 CHANGELOG.md         | 4 ++++
 macros/sql/union.sql | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 67b690e7..f346c55b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# dbt-utils v0.8.2
+## Fixes
+- Fix union_relations error from [#473](https://github.com/dbt-labs/dbt-utils/pull/473) when no include/exclude parameters are provided ([#505](https://github.com/dbt-labs/dbt-utils/issues/505), [#509](https://github.com/dbt-labs/dbt-utils/pull/509))
+
 # dbt-utils v0.8.1
 
 ## New features
diff --git a/macros/sql/union.sql b/macros/sql/union.sql
index 009a765a..a7bf1d95 100644
--- a/macros/sql/union.sql
+++ b/macros/sql/union.sql
@@ -61,7 +61,7 @@
 
     {%- set ordered_column_names = column_superset.keys() -%}
 
-    {%- if not column_superset.keys() -%}
+    {% if (include | length > 0 or exclude | length > 0) and not column_superset.keys() %}
         {%- set relations_string -%}
             {%- for relation in relations -%}
                 {{ relation.name }}