Laravel Add a Column to a Table

```
php artisan make:migration add_colName_to_tableName --table=tableName
```
This will create migration file under the database/migration directory

Update in the generated file the columns you want to add in the up function. Also add instruction to delete the columns in the down function.

public function up()
    {
        Schema::table('tableName', function (Blueprint $table) {
            $table->string('addCol1')->nullable();
            $table->string('addCol2')->nullable();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('tableName', function (Blueprint $table) {
            $table->dropColumn(['addCol1',  'addCol2']);
        });
    }

Now run
```
php artisan migrate
```
You should see the new columns created