update to SessionConfig (#1234)

add `schema_force_view_types=true` in query session config
as it improves query performance as explained here -
apache/datafusion#13101

Author: nikhilsinhaparseable

src/query/mod.rs

@@ -65,7 +65,6 @@ pub static QUERY_SESSION: Lazy<SessionContext> =
 pub static QUERY_RUNTIME: Lazy<Runtime> =
     Lazy::new(|| Runtime::new().expect("Runtime should be constructible"));
 
-
 /// This function executes a query on the dedicated runtime, ensuring that the query is not isolated to a single thread/CPU
 /// at a time and has access to the entire thread pool, enabling better concurrent processing, and thus quicker results.
 pub async fn execute(
@@ -126,6 +125,14 @@ impl Query {
             .execution
             .use_row_number_estimates_to_optimize_partitioning = true;
 
+        //adding this config as it improves query performance as explained here -
+        // https://github.com/apache/datafusion/pull/13101
+        config
+            .options_mut()
+            .execution
+            .parquet
+            .schema_force_view_types = true;
+
         let state = SessionStateBuilder::new()
             .with_default_features()
             .with_config(config)