Laravel7 マイグレーション(migration)を使用してカラム名を変更する手順

composer require doctrine/dbal

php artisan make:migration change_tasks_table --table tasks

<?php

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

class ChangeTasksTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('tasks', function (Blueprint $table) {
            $table->renameColumn('due_date','complete_date')->change();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('tasks', function (Blueprint $table) {
            $table->renameColumn('complete_date','due_date')->change();
        });
    }
}

php artisan migrate

Schema::table('tasks', function (Blueprint $table) {
            $table->string('complete_date')->change();
});