我想在codeigniter 2.2中執行此查詢。我閱讀文檔http://www.codeigniter.com/user_guide/database/results.html。Codeigniter加入查詢失敗
我的控制器代碼是這樣的
$query = $this->db->query("SELECT a.id, a.child, a.immune, a.immun_date, b.id, b.fname, b.lname, c.id, c.name
FROM immun a, children b, immun_master c
WHERE a.child = b.id
AND c.id = a.immune
");
$immun = array();
foreach ($query->result()as $row) {
$immun[] = array(
$row->id,
$row->child,
$row->immune,
$row->immun_date,
);
}
已打開,結果是這樣的:
array (
0 =>
array (
0 => '2',
1 => '1001',
2 => '2',
3 => '2011-04-23',
),
1 =>
array (
0 => '3',
1 => '1001',
2 => '3',
3 => '2011-04-30',
),
2 =>
array (
0 => '6',
1 => '1002',
2 => '6',
3 => '2011-04-30',
),
3 =>
array (
0 => '5',
1 => '1002',
2 => '5',
3 => '2011-04-29',
),
4 =>
array (
0 => '1',
1 => '1003',
2 => '1',
3 => '2011-01-06',
),
5 =>
array (
0 => '3',
1 => '1005',
2 => '3',
3 => '2010-10-04',
),
6 =>
array (
0 => '3',
1 => '1231',
2 => '3',
3 => '2014-08-01',
),
)
這些都是錯誤的結果。我期待的是查詢的合併結果。下面是我所得到的,當我在phpMyAdmin運行查詢現在
id child immune immun_date id fname lname id name
1 1001 2 2011-04-23 1001 Johny Jame 2 Swine Flu Vaccine
2 1001 3 2011-04-30 1001 Johny Jame 3 Bird Flu Vaccine
3 1002 6 2011-04-30 1002 Chelsea James 6 Hepatitis B
4 1002 5 2011-04-29 1002 Chelsea James 5 Measles Vaccine
5 1003 1 2011-01-06 1003 Charles Jacob 1 H1N1 Vaccine
6 1005 3 2010-10-04 1005 Hansome Little 3 Bird Flu Vaccine
7 1231 3 2014-08-01 1231 Jennifer Ylanan 3 Bird Flu Vaccine
,這將是很好,如果我能得到CI回到同一組合併的數據。我可以看到,它只是返回表格查詢進行免疫,而CI沒有從另一個表中加入數據。我在某處讀到CI沒有被構建來處理複雜的查詢?真的嗎?
任何想法如何獲得我需要的數據? 謝謝!
結果是預期的,因爲你在做交叉連接。 – 2015-02-11 17:21:15
感謝您的線索! – user1794918 2015-02-11 18:44:55