Laravel 6 – SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax;

when I run

php artisan migrate

to migrate this Schema

public function up()
{
    Schema::create('transaction_ins', function (Blueprint $table) {
        $table->bigIncrements('id');
        $table->string('idTransactionIN');
        $table->date('buy_date');
        $table->string('id_Supplier')->unsigned();
        $table->string('id_DeviceType')->unsigned();
        $table->string('id_DeviceBrand')->unsigned();
        $table->string('device_name');
        $table->mediumText('device_name');
        $table->decimal('device_price', 11, 2);
        $table->integer('amount');
        $table->decimal('sum_price', 15, 2);
        $table->mediumText('context');
        $table->timestamps();

        //Foreign Key
        $table->foreign('id_Supplier')->references('idSupplier')->on('suppliers')->onUpdate('cascade');
        $table->foreign('id_DeviceType')->references('idDeviceType')->on('device_types')->onUpdate('cascade');
        $table->foreign('id_DeviceBrand')->references('idDevicebrand')->on('device_brands')->onUpdate('cascade');
    });
}

I get this error message

IlluminateDatabaseQueryException : SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ‘unsigned not null, id_DeviceType varchar(255) unsigned not null, id_DeviceBra' at line 1 (SQL: create tabletransaction_ins(idbigint unsigned not null auto_increment primary key,idTransactionINvarchar(255) not null,buy_datedate not null,id_Suppliervarchar(255) unsigned not null, id_DeviceTypevarchar(255) unsigned not null,id_DeviceBrand varchar(255) unsigned not null,device_namevarchar(255) not null, device_namemediumtext not null,device_pricedecimal(11, 2) not null,amountint not null,sum_pricedecimal(15, 2) not null, contextmediumtext not null,created_attimestamp null, updated_at` timestamp null) default character set utf8mb4 collate ‘utf8mb4_unicode_ci’)

Answer

You can’t have strings unsigned, that’s meant for integers

just remove the unsigned modifier (if they are really strings)

$table->string('id_Supplier');
$table->string('id_DeviceType');
$table->string('id_DeviceBrand');

Hope this helps