diff --git a/nix/clickhouse_test.nix b/nix/clickhouse_test.nix
index 4c5978ca..d0c2f03f 100644
--- a/nix/clickhouse_test.nix
+++ b/nix/clickhouse_test.nix
@@ -1,14 +1,30 @@
 { pkgs, config, ... }: {
-  services.clickhouse."clickhouse" = {
+  services.clickhouse."clickhouse1" = {
     enable = true;
+    port = 9000;
     extraConfig = ''
       http_port: 9050
     '';
   };
+  services.clickhouse."clickhouse2" = {
+    enable = true;
+    port = 9001;
+    extraConfig = ''
+      http_port: 9051
+    '';
+    initialDatabases = [
+      {
+        name = "sample_db";
+        schemas = [ ./clickhouse_test.sql ];
+      }
+    ];
+  };
 
+  # avoid both the processes trying to create `data` directory at the same time
+  settings.processes."clickhouse2-init".depends_on."clickhouse1-init".condition = "process_completed_successfully";
   settings.processes.test =
     let
-      cfg = config.services.clickhouse."clickhouse";
+      cfg = config.services.clickhouse."clickhouse1";
     in
     {
       command = pkgs.writeShellApplication {
@@ -27,9 +43,13 @@
 
             # Test clickhouse http port
             curl http://localhost:9050 | grep Ok
+
+            # schemas test
+            clickhouse-client --host 127.0.0.1 --port 9001 --query "SELECT * FROM sample_db.ride WHERE short_id = 'test_ride';" | grep test_ride
+
           '';
         name = "clickhouse-test";
       };
-      depends_on."clickhouse".condition = "process_healthy";
+      depends_on."clickhouse2".condition = "process_healthy";
     };
 }
diff --git a/nix/clickhouse_test.sql b/nix/clickhouse_test.sql
new file mode 100644
index 00000000..b8b7fca3
--- /dev/null
+++ b/nix/clickhouse_test.sql
@@ -0,0 +1,3 @@
+CREATE TABLE sample_db.ride (`id` Int64, `short_id` String) ENGINE = MergeTree() PRIMARY KEY (id);
+
+INSERT INTO sample_db.ride values (1, 'test_ride');