Php Codeigniter结合了两个结果

我有两个问题。我必须执行两个查询并返回同一个结果对象。 比如说

$query1 = "SELECT name,age from students";
$query2 = "SELECT name,age from users";
$result1 = $this->db->query($query1)
$result2 = $this->db->query($query2)
 return result1 and result 2 together ;

我必须返回同一对象中两个查询的结果。请帮帮我

实际查询是：：

SELECT dev_members.name,dev_members.id,dev_members.age,dev_members.family_id,dev_family.house_name,dev_ib_account_registration.account_id FROM (dev_members) 
JOIN dev_family ON dev_family.id=dev_members.family_id
JOIN dev_ib_account_registration ON dev_ib_account_registration.member_id=dev_members.id
           UNION
SELECT dev_members.name,dev_members.id,dev_members.age,dev_members.family_id, dev_family.house_name,dev_ib_sub_member_registration.account_id FROM (dev_members) 
JOIN dev_family ON dev_family.id=dev_members.family_id
JOIN dev_ib_sub_member_registration ON dev_ib_sub_member_registration.member_id=dev_members.id

---

您可以使用

UNION

$query = "SELECT name,age from students 
          UNION
          SELECT name,age from users";
$result = $this->db->query($query);

或者，如果要标识表行所属的记录，则

$query = "SELECT name,age, 'students ' AS `table_type` from students 
          UNION
          SELECT name,age, 'users' AS `table_type` from users";
$result = $this->db->query($query);

在查询中需要使用UNION ALL而不是UNION

SELECT dev_members.name,dev_members.id,dev_members.age,dev_members.family_id,dev_family.house_name,dev_ib_account_registration.account_id FROM (dev_members) 
JOIN dev_family ON dev_family.id=dev_members.family_id
JOIN dev_ib_account_registration ON dev_ib_account_registration.member_id=dev_members.id
           UNION ALL
SELECT dev_members.name,dev_members.id,dev_members.age,dev_members.family_id, dev_family.house_name,dev_ib_sub_member_registration.account_id FROM (dev_members) 
JOIN dev_family ON dev_family.id=dev_members.family_id
JOIN dev_ib_sub_member_registration ON dev_ib_sub_member_registration.member_id=dev_members.id

---

UNION删除最终结果集中的重复行，而UNION ALL保留重复行。

您可能希望在提问之前搜索问题

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相同的问题已经有了答案。

我已经给出了一个示例查询，我将通过编辑question@user3387036在查询中使用union将得到同一对象中两个表中的所有记录。您还需要更新相应的问题。。。尝试“回声”；打印（结果1）；打印（结果2）；回声'；

SELECT dev_members.name,dev_members.id,dev_members.age,dev_members.family_id,dev_family.house_name,dev_ib_account_registration.account_id FROM (dev_members) 
JOIN dev_family ON dev_family.id=dev_members.family_id
JOIN dev_ib_account_registration ON dev_ib_account_registration.member_id=dev_members.id
           UNION ALL
SELECT dev_members.name,dev_members.id,dev_members.age,dev_members.family_id, dev_family.house_name,dev_ib_sub_member_registration.account_id FROM (dev_members) 
JOIN dev_family ON dev_family.id=dev_members.family_id
JOIN dev_ib_sub_member_registration ON dev_ib_sub_member_registration.member_id=dev_members.id