how to check if one column field data is null then check other field that same row laravel eloquent

Question

I am Retrieve Data From MySQL Database, where the condition is if the checking out data field is null then check the send field to that particular row

id   |  SSC | hhc |  dip
1    |  50  | 50  | null
2    |  60  | null| 60
3    |  50  | 55  | null

condition is "hhc" and "dip" are not both null and they are not both fill up at one time

i realy don't know what to do i try

$users->where('student_masters.hhc','>=' ,60);
$users->where('student_masters.dip','>=' ,60);

i retrive all data but condition is if('student_masters.hhc' == null) then check the other field means student_masters.dip please help me what i do

Answer 1

   ->where(function ($q) {
        $q->where('student_masters.hhc','!=' ,null);
        $q->where('student_masters.dip','=' ,null);
    })
    ->orWhere(function ($q) {
        $q->where('student_masters.hhc','=' ,null);
        $q->where('student_masters.dip','!=' ,null);
    })

This may help you. though question is not clear to me.

Answer 2

If you just want to pull the value of either column and don't care which one it came from, you could use a MySQL case statement. That will allow you to use the value of dip if hhc is null.

$users->select( DB::raw("CASE WHEN hhc IS NULL THEN dip ELSE hhc END AS data_value") )->get();

Note that we're using a raw select statement here as there is no way to do this with pure query builder.

https://laravel.com/docs/5.8/database#running-queries

https://dev.mysql.com/doc/refman/5.7/en/case.html