class CreateFlightsTable extends Migration { /** * 运行数据库迁移 * * @return void */ public function up() { Schema::create('flights', function (Blueprint $table) { $table->increments('id'); $table->string('name'); $table->string('airline'); $table->timestamps(); }); } /*...
说明01: datetime不支持取默认值now(),版本5.6之后的可以默认值CURRENT_TIMESTAMP,它会取当前时间,并转为2017-11-01 23:25:45类的格式,但这种情况不能指定精度,另处写法是new \Illuminate\Database\Query\Expression(‘CURRENT_TIMESTAMP’)才能使用Mysql中的常量 说明02: timestamp(‘列名’,精度),如果指定了精...
php artisan make:migration create_users_table 新的迁移文件会被放置在 database/migrations 目录中。每个迁移文件的名称都包含了一个时间戳,以便让 Laravel 确认迁移的顺序。--table 和--create 选项可用来指定数据表的名称,或是该迁移被执行时是否将创建的新数据表。这些选项需在预生成迁移文件时填入指定的数据...
('mydatetime')->default(new \Illuminate\Database\Query\Expression('CURRENT_TIMESTAMP')); $table->timestamp('register_time')->useCurrent(); //$table->timestamp('register_time',3); $table->timestamps(); }); } public function down() { Schema::connection('mysql2')->dropIfExists('...
The new migration will be placed in your database/migrations directory. Each migration filename contains a timestamp that allows Laravel to determine the order of the migrations:1php artisan make:migration create_flights_tableLaravel will use the name of the migration to attempt to guess the ...
The new migration will be placed in your database/migrations directory. Each migration filename contains a timestamp that allows Laravel to determine the order of the migrations:1php artisan make:migration create_flights_tableLaravel will use the name of the migration to attempt to guess the ...
$table->tinyInteger('status',false,false)->default("-1")->comment("状态 1:正常 -1:禁用"); $table->string("ip"); $table->timestamp('created_at')->default(DB::raw('CURRENT_TIMESTAMP')); $table->timestamp('updated_at')->default(DB::raw('CURRENT_TIMESTAMP on update CURRENT_TIME...
laravel中migration 数据迁移 简介 数据库迁移就像是数据库的版本控制,可以让你的团队轻松修改并共享应用程序的数据库结构。迁移通常与 Laravel 的数据库结构生成器配合使用,让你轻松地构建数据库结构。如果你曾经试过让同事手动在数据库结构中添加字段,那么数据库迁移可以让你不再需要做这样的事情。
returnnewclassextendsMigration{publicfunctionup():void{} Schema::create('users',function(Blueprint$table){$table->id();$table->timestamps(); }); } Finally, add thedown()method that defines the logic for reversing the migration with the following: ...
laravel 数据库状态[42000]：语法错误或访问冲突：1064错误DB：：语句将自动生成运行有效迁移文件所需的...