Answers for "laravel 8 update migrate table existe without delete data"

drop column table in migration if exist in laravel

Schema::table('users', function (Blueprint $table) {
     if (Schema::hasColumn('users', 'phone')) {
              $table->dropColumn('phone');
		}
});

delete rows by migration laravel

Comment::where('post_id',$id)->delete();

// in down migration

    public function down()
    {
        Schema::table('package_types', function (Blueprint $table) {
            \App\Models\PackageType::query()->where('id','gt',1)->delete();
        });
    }