Schema::table('tableName', function($table)
{
$table->string('column-name')->unique(); //notice the parenthesis I added
});// To drop a column, use the dropColumn method on the schema builder.
// Before dropping columns from a SQLite database, you will need to add
// the doctrine/dbal dependency to your composer.json file and run the
// composer update command in your terminal to install the library:
Schema::table('users', function (Blueprint $table) {
$table->dropColumn('votes');
});$table->index(['account_id', 'created_at']);