Natürlich nur die sub_modules auf '' setzen, die auch NULL sind.

diff --git a/sql/Pg-upgrade2/custom_variables_sub_module_not_null.sql b/sql/Pg-upgrade2/custom_variables_sub_module_not_null.sql
index 3382a58..feef5aa 100644 (file)
--- a/sql/Pg-upgrade2/custom_variables_sub_module_not_null.sql
+++ b/sql/Pg-upgrade2/custom_variables_sub_module_not_null.sql
@@ -2,7 +2,7 @@
 -- @description: sub_module in custom_variables auf NOT NULL ändern.
 -- @encoding: utf-8
 -- @depends: release_2_7_0
-UPDATE custom_variables SET sub_module = '';
+UPDATE custom_variables SET sub_module = '' WHERE sub_module IS NULL;
 ALTER TABLE custom_variables ALTER COLUMN sub_module SET DEFAULT '';
 ALTER TABLE custom_variables ALTER COLUMN sub_module SET NOT NULL;