Question

我正在尝试对3个不同的表进行搜索查询。它正在工作，但现在我无法弄清楚如何知道该行所属的表。任何想法？

这是我的问题：

$query = $db->query("SELECT p_name,l_name,phone1,phone2,phone3,city,building,project,dira FROM `clients_to_call` t1 WHERE 
            (t1.p_name LIKE '%".$_POST['p_name']."%' && t1.l_name LIKE '%".$_POST['l_name']."%' && (t1.phone1='".$_POST['phone']."' || t1.phone2='".$_POST['phone']."' || t1.phone3='".$_POST['phone']."'))
            UNION ALL
            SELECT p_name,l_name,phone1,phone2,phone3,meeting,status,city,project FROM `clients_closed_1` t2 WHERE 
            (t2.p_name LIKE '%".$_POST['p_name']."%' && t2.l_name LIKE '%".$_POST['l_name']."%' && (t2.phone1='".$_POST['phone']."' || t2.phone2='".$_POST['phone']."' || t2.phone3='".$_POST['phone']."'))
            UNION ALL
            SELECT p_name,l_name,phone1,phone2,phone3,client_number1,status,city,project FROM `clients_closed_2` t3 WHERE 
            (t3.p_name LIKE '%".$_POST['p_name']."%' && t3.l_name LIKE '%".$_POST['l_name']."%' && (t3.phone1='".$_POST['phone']."' || t3.phone2='".$_POST['phone']."' || t3.phone3='".$_POST['phone']."'))");

谢谢。

Answer 1

您可以为每个查询添加一个常量字符串，例如

$query = $db->query("SELECT `clients_to_call` p_name, l_name, ...

Answer 2

您应该添加一个字符串，指示union的每个部分的所有者表。试试这个：

$query = $db->query("SELECT 'clients_to_call' owner_table, p_name,l_name,phone1,phone2,phone3,city,building,project,dira FROM `clients_to_call` t1 WHERE 
            (t1.p_name LIKE '%".$_POST['p_name']."%' && t1.l_name LIKE '%".$_POST['l_name']."%' && (t1.phone1='".$_POST['phone']."' || t1.phone2='".$_POST['phone']."' || t1.phone3='".$_POST['phone']."'))
            UNION ALL
            SELECT 'clients_closed_1' owner_table, p_name,l_name,phone1,phone2,phone3,meeting,status,city,project FROM `clients_closed_1` t2 WHERE 
            (t2.p_name LIKE '%".$_POST['p_name']."%' && t2.l_name LIKE '%".$_POST['l_name']."%' && (t2.phone1='".$_POST['phone']."' || t2.phone2='".$_POST['phone']."' || t2.phone3='".$_POST['phone']."'))
            UNION ALL
            SELECT 'clients_closed_2' owner_table, p_name,l_name,phone1,phone2,phone3,client_number1,status,city,project FROM `clients_closed_2` t3 WHERE 
            (t3.p_name LIKE '%".$_POST['p_name']."%' && t3.l_name LIKE '%".$_POST['l_name']."%' && (t3.phone1='".$_POST['phone']."' || t3.phone2='".$_POST['phone']."' || t3.phone3='".$_POST['phone']."'))");

Answer 3

您可以对每个查询使用常量字符串：

SELECT *,'clients_to_call' FROM `clients_to_call` WHERE 1

如何知道该行属于哪个表？

3 个答案: