<?php 
use Illuminate\Support\Facades\DB;

$result =  DB::table('weld_logs')
        ->join('document_revisions', 'weld_logs.iso_number', '=', 'document_revisions.drawing_no')
        ->where(function ($query) {
            $query->whereNull('weld_logs.iso_rev')
                  ->orWhere('weld_logs.iso_rev', ''); // iso_rev null veya boş olanlar
        })
        ->update([
            'weld_logs.project' => DB::raw('document_revisions.zone'),
            'weld_logs.design_area' => DB::raw('document_revisions.area'),
            'weld_logs.iso_rev' => DB::raw('document_revisions.revision_no'),
            'weld_logs.line_number' => DB::raw('document_revisions.line_number'),
        ]);

        dump("Update WeldLogs from Document Revisions row count: $result");
 ?>