From 0a8c1349059eb2a305f9f6fc8518a2027a666179 Mon Sep 17 00:00:00 2001
From: Daniel Westendorf <daniel@prowestech.com>
Date: Fri, 25 Oct 2024 13:22:11 -0600
Subject: [PATCH] Add method for querying materialized views

---
 .../connection_adapters/clickhouse/schema_statements.rb     | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/active_record/connection_adapters/clickhouse/schema_statements.rb b/lib/active_record/connection_adapters/clickhouse/schema_statements.rb
index a4e73ff..a275477 100644
--- a/lib/active_record/connection_adapters/clickhouse/schema_statements.rb
+++ b/lib/active_record/connection_adapters/clickhouse/schema_statements.rb
@@ -72,6 +72,12 @@ def views(name = nil)
           result['data'].flatten
         end
 
+        def materialized_views(name = nil)
+          result = do_system_execute("SHOW TABLES WHERE engine = 'MaterializedView'", name)
+          return [] if result.nil?
+          result['data'].flatten
+        end
+
         def functions
           result = do_system_execute("SELECT name FROM system.functions WHERE origin = 'SQLUserDefined'")
           return [] if result.nil?