Laravel migration index

Laravel drop column

// 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');
});

Source: laravel.com

Laravel migration add unique column

Schema::table('tableName', function($table)
{
    $table->string('column-name')->unique(); //notice the parenthesis I added
});

Laravel migration index

$table->index(['account_id', 'created_at']);

Source: laravel.com

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