<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
use Illuminate\Support\Facades\DB;

class UniqueColumns extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        dump(DB::select(DB::raw("DELETE t1 FROM nde_matrices t1
        INNER JOIN nde_matrices t2 
        WHERE 
            t1.id < t2.id AND 
            t1.line = t2.line AND
            t1.type_of_joint = t2.type_of_joint AND
            t1.fluid = t2.fluid
            ;")));

        Schema::table("nde_matrices", function (Blueprint $table) {
            $table->unique(['line', 'type_of_joint', 'fluid']);
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        //
    }
}