add finalizer for ExecContext

Author: s0und0fs1lence

chdb/driver/driver.go

@@ -6,6 +6,7 @@ import (
 	"database/sql"
 	"database/sql/driver"
 	"fmt"
+	"runtime"
 	"strconv"
 	"strings"
 
@@ -352,10 +353,16 @@ func (c *conn) ExecContext(ctx context.Context, query string, args []driver.Name
 	if err != nil {
 		return nil, err
 	}
-	return &execResult{
+	res := &execResult{
 		err:      nil,
 		localRes: result,
-	}, nil
+	}
+	runtime.SetFinalizer(res, func(r *execResult) {
+		if r.localRes != nil {
+			r.localRes.Free()
+		}
+	})
+	return res, nil
 }
 
 func (c *conn) QueryRowContext(ctx context.Context, query string, values []driver.Value) *singleRow {

chdb/driver/parquet_streaming_test.go

@@ -111,6 +111,7 @@ func TestDBWithParquetStreamingConnection(t *testing.T) {
 	if db.Ping() != nil {
 		t.Fatalf("ping db fail, err: %s", err)
 	}
+
 	rows, err := db.Query("select * from TestDBWithParquetConnectionStreaming;")
 	if err != nil {
 		t.Fatalf("exec create function fail, err: %s", err)