lundi 31 août 2020

Change() on database column not working in laravel migration?

about three monthe ago I write a migration to change column type from string to integer which was working fine at that time now it is giving this error

 public function up()
    {
        Schema::table('delivery_zones', function (Blueprint $table) {
            $table->Integer('income_rate_zone')->nullable()->change();
            $table->Integer('expense_rate_zone')->nullable()->change();
            // DB::statement('ALTER TABLE `throttle` MODIFY `user_id` INTEGER UNSIGNED NULL;');

        });
    }

I can use raw db query but i want to avoid that because i have used this method at many places. i have 2.10 version of doctrine/dbal

Error

  Illuminate\Database\QueryException  : 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 'CHARACTER SET utf8mb4 DEFAULT NULL COLLATE `utf8mb4_unicode_ci`, CHANGE expen...' at line 1 (SQL: ALTER TABLE delivery_zones CHANGE income_rate_zone income_rate_zone INT CHARACTER SET utf8mb4 DEFAULT NULL COLLATE `utf8mb4_unicode_ci`, CHANGE expense_rate_zone expense_rate_zone INT CHARACTER SET utf8mb4 DEFAULT NULL COLLATE `utf8mb4_unicode_ci`)

  at C:\Projects\temp-xdock\vendor\laravel\framework\src\Illuminate\Database\Connection.php:664
    660|         // If an exception occurs when attempting to run a query, we'll format the error
    661|         // message to include the bindings with SQL, which will make this exception a
    662|         // lot more helpful to the developer instead of just the database's errors.
    663|         catch (Exception $e) {
  > 664|             throw new QueryException(
    665|                 $query, $this->prepareBindings($bindings), $e
    666|             );
    667|         }
    668|

  Exception trace:

  1   Doctrine\DBAL\Driver\PDOException::("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 'CHARACTER SET utf8mb4 DEFAULT NULL COLLATE `utf8mb4_unicode_ci`, CHANGE expen...' at line 1")


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