laravel中的迁移文件用于在数据库中创建表,对吧?但是,当我尝试迁移时,它给了我这个错误:
C:\ xampp \ htdocs \ app> php artisan migrate
[照亮\数据库\ QueryException] SQLSTATE [42S01]:基表或视图已存在:1050表'users'已存在(SQL:create table
users
(id
int unsigned not null auto_increment primary key,name
varchar( 255)not null,password
varchar(255)not null,remember_token
varchar(100)null,created_at
timestamp null,updated_at
tim estamp null)默认字符集utf8mb4 collate utf8mb4_unicode_ci)[PDOException] SQLSTATE [42S01]:基表或视图已存在:1050表'用户'已存在
我创建了一个新的迁移文件,它叫做test。我知道用户已经存在,但我想创建我创建的新表,称为test。我删除了所有表并重新迁移它,但它只是再次创建了我的用户和迁移表。不是我想创建的新表,也就是测试。
这是我将用于创建我的表但不会创建的迁移文件:
<?php
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateTestsTable extends Migration
{
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::create('tests', function (Blueprint $table) {
$table->increments('id');
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
Schema::dropIfExists('tests');
}
}
这是用户迁移文件,告诉我它存在:
<?php
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateUsersTable extends Migration
{
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::create('users', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->string('email')->unique();
$table->string('password');
$table->rememberToken();
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
Schema::dropIfExists('users');
}
}
这是密码迁移文件:
<?php
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreatePasswordResetsTable extends Migration
{
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::create('password_resets', function (Blueprint $table) {
$table->string('email')->index();
$table->string('token');
$table->timestamp('created_at')->nullable();
});
}
/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
Schema::dropIfExists('password_resets');
}
}
这里是我想创建的假人迁移文件,但即使在我删除所有表后也不会因某些原因创建:
<?php
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateDummiesTable extends Migration
{
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::create('dummies', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->text('body');
$table->timestamp('date'); //if you dont put name for the timestamp it will create: create_at and update_at fields.
});
}
/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
Schema::dropIfExists('dummies');
}
}
答案 0 :(得分:0)
您使用此命令吗? php artisan migrate:refresh
如果你这样做,那就试试这个:
<?php
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateUsersTable extends Migration
{
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::dropIfExists('users');
Schema::create('users', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->string('email')->unique();
$table->string('password');
$table->rememberToken();
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
Schema::dropIfExists('users');
}
}
在您的其他迁移文件中执行相同的操作,这样,每次迁移之前表都会丢失,您不再有问题了:)
(它与php artisan migrate:refresh
答案 1 :(得分:0)
我想你应该试试这个:
首先从数据库中的迁移表中删除测试,用户,password_resets和dummies,然后运行php artisan migrate
命令