From 87871676707e771461bc4a6e7db892d90d53ea7a Mon Sep 17 00:00:00 2001
From: mikaelene <mikael.ene@eneanalytics.com>
Date: Mon, 11 Jan 2021 08:30:15 +0100
Subject: [PATCH] Changed snapshot logic to apply with dbt core. Possibly
 fixing an unidentified bug :-)

---
 .../macros/materializations/snapshot/strategies.sql         | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/dbt/include/sqlserver/macros/materializations/snapshot/strategies.sql b/dbt/include/sqlserver/macros/materializations/snapshot/strategies.sql
index fc9c138c..812f63fc 100644
--- a/dbt/include/sqlserver/macros/materializations/snapshot/strategies.sql
+++ b/dbt/include/sqlserver/macros/materializations/snapshot/strategies.sql
@@ -22,7 +22,11 @@
         {% for col in check_cols %}
             {{ snapshotted_rel }}.{{ col }} != {{ current_rel }}.{{ col }}
             or
-            ({{ snapshotted_rel }}.{{ col }} is null) and not ({{ current_rel }}.{{ col }} is null)
+            (
+                (({{ snapshotted_rel }}.{{ col }} is null) and not ({{ current_rel }}.{{ col }} is null))
+                or
+                ((not {{ snapshotted_rel }}.{{ col }} is null) and ({{ current_rel }}.{{ col }} is null))
+            )
             {%- if not loop.last %} or {% endif %}
 
         {% endfor %}