laravel5数据库操作

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<?phpnamespace App;use Illuminate\Database\Eloquent\Model;use Illuminate\Database\Eloquent\SoftDeletes;use DB;class User extends Model {static function getResult(){$res=null;/*//插入$user=array('username'=>'test','password'=>'123456','age'=>23);$res = DB::table('users')->insert($user);*//*//查询res = DB::table('users')->where('username','test')->first();//一维$res = DB::table('users')->where('username','test')->get(); //二维$res = DB::select('SELECT * FROM users WHERE username="test"');*//*//更新数据$res =DB::update('UPDATE users SET age=25 WHERE username="test"');$res =DB::table('users')->where('username','test')->update(array('age' =>23));*//*//删除数据$res = DB::delete('DELETE FROM users WHERE username="joy"');$res = DB::table('users')->where('username','joy')->delete();*//*//字段添加$res = DB::statement('ALTER TABLE users ADD sex tinyint(1) not null default 0');*//*事务DB::transaction(function(){$user=array(xxxx);DB::table('user')->insert($user);DB.....});*//*//结果查询器$res = DB::table('users')->where('username','test')->pluck('age');//去特定字段值$res = DB::table('users')->lists('age');//特殊字段list值$res = DB::table('users')->select(array('id','username'))->get();多个特殊字段查询$res = DB::table('users')->where('id','>',1)->get();$res = DB::table('users')->where('id',1)->get();$res = DB::table('users')->whereId(1)->get();$res = DB::table('users')->where('id','<',3)->where('username','test')->get();$res = DB::table('users')->where('id','>',3)->orWhere('username','test')->get();$res = DB::table('users')->where('username','test')->where(function($query){$query->where('age','>',13)->orWhere('sex',0);})->get();//相当于username = 'test' and (age>13 or sex=0)$res = DB::table('users')->whereBetween('age',array(0,15))->get();$res = DB::table('users')->whereNotBetween('age',array(0,15))->get();$res = DB::table('users')->whereIn('age',array(23,30))->get();$res = DB::table('users')->whereNot In('age',array(23,30))->get();*///$res = DB::table('users')->groupBy('sex')->orderBy('id','DESC')->having('sex','=',0)->get();//$res = DB::table('users')->limit(2,3)->get();//$res = DB::table('users')->skip(2)->take(1)->get();//$res = DB::table('posts')->join('users','posts.user_id','=','users.id')->get();// $res = DB::table('posts')->join('users',function($query){// $query->on('posts.user_id','=','users.id');//->On(...);// })->get();/*//嵌套查询$res = DB::table('users')->where(function($query){if(Input::get('status')){$query->whereStatus(Input::get('status'));}if(Input::get('source')){$query->whereSource(Input::get('source'));}})->get();*//*$res = DB::table('users')->whereExists(function($query){$query->select('*')->from('posts')->whereRaw(DB::raw('users.id = posts.user_id'));})->get();*/$res = DB::table('users')->where('id','>','2')->count();$res = DB::table('posts')->where('id',6)->decrement('view_count',5);//减5//$res=DB::table('posts')->truncate();//清表print_r($res);exit;}}
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