Question

Hello what I’m trying to do is retrieve values from tables but I’m having a problem with forming a correct SQL statement. This is what i have.

 $qry_display = "SELECT a.section_id, b.section_id,b.student_id,c.* 
                   FROM tbl_section AS a 
                   LEFT OUTER JOIN tbl_er AS b On a.section_id = b.section_id
                   LEFT OUTER JOIN tbl_enroll AS c On b.student_id = c.student_id
                  WHERE b.student_id=c.student_id
                    AND a.bname='$branch'";

This is my database structure.

tbl_section:

section_id    section_name    sy    adviser_id    level

tbl_er:

student_id    section_id

tbl_enroll

student_id    fname    lname

I’m having problems with forming the proper sql statement would appreciate any help on how to do it right. What i want is to show all students Under a given section.

Answer 1

In what table bname belongs? change bname into sectionname. Try this one,

SELECT  c.*
FROM    tbl_section a
        INNER JOIN tbl_er b
            on a.section_ID = b.section_ID
        INNER JOIN tbl_enroll c
            ON b.student_ID = c.student_ID
WHERE   a.sectionname = 'sectionNameHere'