Laravel迁移SQLSTATE [42000]：语法错误或访问冲突：1064

Question

对于非常旧的迁移，我遇到了新的迁移错误（过去运行正常）。

我遇到的错误是：SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'CHARACTER SET utf8 NOT NULL COLLATE `utf8_unicode_ci`' at line 1 (SQL: ALTER TABLE rooms CHANGE conversion conversion TINYINT(1) CHARACTER SET utf8 NOT NULL COLLATE `utf8_unicode_ci`)

迁移文件如下所示：

<?php

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class ChangeRoomsConversionToBoolean extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('rooms', function (Blueprint $table) {
            $table->boolean('conversion')->change();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('rooms', function (Blueprint $table) {
            $table->string('conversion')->change();
        });
    }
}

如果直接在数据库ALTER TABLE rooms CHANGE conversion conversion TINYINT(1) CHARACTER SET utf8 NOT NULL COLLATE `utf8_unicode_ci中运行查询，则会收到错误：You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'CHARACTER SET utf8 NOT NULL' at line 1

我正在使用Laravel 5.6在Homestead上运行。

任何帮助将不胜感激。

Answer 1

我相信有一些issues with how Laravel is configuring DBAL；但是，我认为以下方法可以解决您的问题：

    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('rooms', function (Blueprint $table) {
            $table->boolean('conversion')->charset(null)->collation(null)->change();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('rooms', function (Blueprint $table) {
            $table->string('conversion')->change();
        });
    }