feat(cubestore): Support two arguments for round, fix #6179

Author: ovr

rust/cubestore/Cargo.lock

@@ -3922,6 +3922,34 @@ mod tests {
         }).await;
     }
 
+    #[tokio::test]
+    async fn builtin_functions() {
+        Config::run_test("builtin_functions", async move |services| {
+            let service = services.sql_service;
+
+            // ROUND
+            {
+                let result = service
+                    .exec_query("SELECT round(42.4), round(42.4382, 2), round(1234.56, -1)")
+                    .await
+                    .unwrap();
+
+                assert_eq!(result.len(), 3);
+                assert_eq!(result.get_columns().len(), 1);
+
+                assert_eq!(
+                    result.get_rows(),
+                    &vec![
+                        Row::new(vec![TableValue::Float(42_0.into())]),
+                        Row::new(vec![TableValue::Float(42.44.into())]),
+                        Row::new(vec![TableValue::Float(1230_0.into())]),
+                    ]
+                )
+            }
+        })
+        .await;
+    }
+
     #[tokio::test]
     async fn explain_physical_plan() {
         Config::test("explain_analyze_router").update_config(|mut config| {