修复执行sql代码bugp

functions/query_json.go

 func QueryPositionalToJSON(db *sqlx.DB, sql string, positionalParams ...interface{}) *types.QueryResult {
 	startTime := time.Now()
 
+	fmt.Printf("positionalParams: %s", positionalParams)
+	fmt.Printf("sql: %s", sql)
 	if sql == "" {
 		return createErrorResult("SQL query cannot be empty", startTime)
 	}