(03-31-2018, 11:10 AM)apysan Wrote: I am trying to join three tables and get the required result from there for my use , I have been partially successfull in that but can not get the desired result.
Please help.
My issue is mentioned in details in the attached file.
Thanks
This is what I have done and expect, infact I have already send this as attached document.
When I run the following query:
public function select_all_student() {
$this->db->select('*');
$this->db->FROM('tbl_student');
$this->db->join('tbl_class', 'tbl_student.class_id = tbl_class.class_id');
//$this->db->join('tbl_section', 'tbl_student.section_id = tbl_section.section_id');
$this->db->order_by("tbl_student.student_id", "desc");
It gives me the following output:
Array
(
[0] => stdClass Object
(
[student_id] => 1
[student_name] => SHANKAR DAYAL SHARMA
[class_id] => 1
[class_name] => ONE
[section_id] => 1
[section_name] =>
[student_gurdian] => parent of sharkar dayal sharma
[student_dob] => 03/13/2018
[student_gender] => Male
[student_blood_group] => B-
[student_relegion] => Hinduism
[student_email] => [email protected]
[student_phone] => 3333333333, 6565656565, 8686868686
[student_address] => address1
When I run the following query:
public function select_all_student() {
$this->db->select('*');
$this->db->FROM('tbl_student');
//$this->db->join('tbl_class', 'tbl_student.class_id = tbl_class.class_id');
$this->db->join('tbl_section', 'tbl_student.section_id = tbl_section.section_id');
$this->db->order_by("tbl_student.student_id", "desc");
It gives me the following output:
[student_id] => 1
[student_name] => SHANKAR DAYAL SHARMA
[class_id] => 0
[class_name] =>
[section_id] => 1
[section_name] => A
[student_gurdian] => parent of sharkar dayal sharma
[student_dob] => 03/13/2018
[student_gender] => Male
[student_blood_group] => B-
[student_relegion] => Hinduism
[student_email] => [email protected]
[student_phone] => 3333333333, 6565656565, 8686868686
[student_address] => address1
address2
I need this optput:
[class_id] => 1
[class_name] => ONE
[section_id] => 1
[section_name] => A
It is possible if I can retain the result of this two joins together
$this->db->join('tbl_class', 'tbl_student.class_id = tbl_class.class_id');
$this->db->join('tbl_section', 'tbl_student.section_id = tbl_section.section_id');
How to do that ?
More details
Tbl_student
1
student_id[img=1x1]file:///C:/Users/arjun/AppData/Local/Temp/msohtmlclip1/01/clip_image001.gif[/img]
int(11)
No
None
AUTO_INCREMENT
2
student_name
varchar(50)
utf8_general_ci
No
None
3
class_id
int(11)
No
None
4
class_name
varchar(10)
utf8_general_ci
No
None
5
section_id
int(11)
No
None
6
section_name
varchar(10)
utf8_general_ci
No
None
7
student_gurdian
varchar(100)
utf8_general_ci
No
None
8
student_dob
varchar(50)
utf8_general_ci
No
None
9
student_gender
varchar(10)
utf8_general_ci
No
None
Tbl_class
1
ONE
11
2B-FETCHED
1
2bd
pkd --------------- 11
1
2
TWO
9
2B-FETCHED
2
2bd
DT ------------------------------ 9
1
3
THREE
10
2B-FETCHED
3
2bd
KU --------------- >> 10
1
4
FOUR
12
2B-FETCHED
4
2bd
SANDEEP SAHA -------------------------------> 1...
0
5
FIVE
13
2B-FETCHED
5
2bd
4 ...
1
And
Tbl_section
1
A
11
not reqd field
0
sec_CAT
45
2
B
10
not reqd field
0
BCAT
50
3
C
12
not reqd field
0
BCAT222
40
4
D
11
not reqd field
0
DDD
23
5
E
0
not reqd field
0
2222
44
6
F
12
not reqd field
0
