修复执行sql代码bugp

functions/query_csv.go

 		return nil, fmt.Errorf("SQL query cannot be empty")
 	}
 
-	query, args, err := sqlx.Named(sql, params)
-	if err != nil {
-		return nil, fmt.Errorf("failed to bind named parameters: %v", err)
-	}
+	//query, args, err := sqlx.NamedQuery(sql, params)
+	//if err != nil {
+	//	return nil, fmt.Errorf("failed to bind named parameters: %v", err)
+	//	}
 
-	query = db.Rebind(query)
-	rows, err := db.Query(query, args...)
+	//query = db.Rebind(query)
+	rows, err := sqlx.NamedQuery(db, sql, params)
 	if err != nil {
 		return nil, fmt.Errorf("query execution failed: %v", err)
 	}
+	defer rows.Close()
 
-	return rowsToCSV(rows)
+	return rowsToCSV(rows.Rows)
 }
 
 // / rowsToCSV 公共方法：将查询结果转换为 CSV 字节数据