One hour interval - Laravel

Question

I'm trying to select all records based on date/time. I have this timestamps in postgreSQL:

13/12/2020 11:00:00
14/12/2020 11:31:00
14/12/2020 12:30:00
14/12/2020 13:00:00
15/12/2020 02:00:00

I have a code in the controller getting all records:

    $start_date = date('d/m/Y 00:00:00');
    $end_date = date('d/m/Y 23:59:59');

    if($request->start_date != '' && $request->end_date != '')
    {
        // if user fill dates
        $dateScope = array($request->start_date, $request->end_date);
    } else {
        // default load page - today
        $dateScope = array($start_date, $end_date);
    };

  $results  = Tablemodel1::whereBetween('table1.recordtime', $dateScope)
    ->selectRaw('table1.recordtime','table2.info')
    ->orderBy('recordtime', 'ASC')
    ->get();

The goal is to select only records in every hour like this:

13/12/2020 11:00:00
14/12/2020 13:00:00
15/12/2020 02:00:00

I get error when use:

  $results  = Tablemodel1::whereBetween('table1.recordtime', $dateScope)
    ->selectRaw('extract(hour from table1.recordtime)','table2.info')
    ->orderBy('recordtime', 'ASC')
    ->get();

The error is:

Undefined index: recordtime

Answer 1

You could use LIKE to get the records with timestamps that have no minutes or seconds and if there's no other processing required.

$results  = Tablemodel1::whereBetween('table1.recordtime', $dateScope)
    ->where('table1.recordtime','LIKE', '%:00:00%')
    ->selectRaw('table1.recordtime','table2.info')
    ->orderBy('recordtime', 'ASC')
    ->get();

Also, your query could probably work with this slight fix (AS column_name)

$results  = Tablemodel1::whereBetween('table1.recordtime', $dateScope)
    ->selectRaw('extract(hour from table1.recordtime) AS recordtime','table2.info')
    ->orderBy('recordtime', 'ASC')
    ->get();