如果搜索匹配，如何获取所有列

Question

您好，我试图获取所有列，但在 SELECT 之后放置星号“*”时无法正常工作 .please help me to fix.without using * 我得到一列

预期结果：- 我想得到所有专栏

$sql = "(SELECT *,pd_title as keyword, 'product' as type FROM Products
               WHERE pd_title LIKE :search_q AND status = :status)
              UNION 
              (SELECT search_term as keyword, 'history' as type FROM product_search_history
               WHERE search_term LIKE :search_q AND status = :status)";