1 files changed, 21 insertions, 0 deletions
diff --git a/gems/gitlab-schema-validation/lib/gitlab/schema/validation/validators/missing_tables.rb b/gems/gitlab-schema-validation/lib/gitlab/schema/validation/validators/missing_tables.rb
new file mode 100644
index 00000000000..facf9135dfb
--- /dev/null
+++ b/gems/gitlab-schema-validation/lib/gitlab/schema/validation/validators/missing_tables.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Schema
+    module Validation
+      module Validators
+        class MissingTables < Base
+          ERROR_MESSAGE = "The table %s is missing from the database"
+
+          def execute
+            structure_sql.tables.filter_map do |structure_sql_table|
+              next if database.table_exists?(structure_sql_table.name)
+
+              build_inconsistency(self.class, structure_sql_table, nil)
+            end
+          end
+        end
+      end
+    end
+  end
+end