laravel SQL查询语句

1.关联查询

模型中写好对应关系，如下：

public function partners()
{
    return $this->hasOne('App\PartnersDesc', 'partner_id', 'partner_id');
}

控制器中写如下：

$where['p_status'] = $prostatus;

$product = Product::with(['partners' => function($query) {
        $query->select('partner_name', 'partner_short_name', 'partner_id');
     }])
    ->whereHas('partners', function ($query1) use ($partner_name)
    {
        $query1->where('partner_name','like', '%'.$partner_name.'%');
    })
    ->where($where)
    ->orderBy('p_id','desc')
    ->skip(($currentCount)*$pageSize)
    ->take($pageSize)
    ->get()
    ->toArray();

dd($product);die;

2.laravel中的where in查询

$return = MyReturn::with(['OrderBorrowApply'=>function($query){
    $query->select('b_id','p_id');
}])->whereIn('r_id',$rids)
    ->first(['r_id','b_id','r_sum']);
dd($return);

3.聚合函数查询

$count = MyReturn::where("b_id",$return['b_id'])->whereIn('r_status' ,[1,3])->count("r_id");
$sum = MyReturn::whereIn('r_id',$rids)->sum('r_sum');

4.获取正在执行的SQL语句

DB::enableQueryLog();
$updateBorrowData["b_status"] = 5000;
$borrowres = OrderBorrowApply::where("b_id",$return["b_id"])->update($updateBorrowData);
dd(DB::getQueryLog());

5.获取以某一个为字段为健，一个为值的语句

$ids = PartnersDesc::where('partner_name','like','%'.$partnername.'%')->pluck('partner_id','id')->toArray();

完整的列表方法

public function index(Request $request)
    {
        $paramInput = $request->all();

        //获取模型
        $Product = Product::query();

        //根据机构名称获取机构ID
        $partner_name = $paramInput['pname'];

        if(!empty($partner_name)){
            $ids = PartnersDesc::where('pname','like','%'.$partner_name.'%')->pluck('id')->toArray();
            //机构名称条件查询
            $Product ->whereIn('pid',$ids);
        }

        //课程名称获取数据
        $pproductname = $paramInput['p_name'];
        if(!empty($pproductname)){
            $Product ->where('p_name','like','%'.$pproductname.'%');
        }

        //课程状态获取数据
        $prostatus = $paramInput['p_status'];
        if($prostatus != null){
            $Product ->where('p_status',$prostatus);
        }

        $currentCount = $request->input('current_count') ?: 1;
        $pageSize = $request->input('count') ?: 15;
        //获取总数
        $total = $Product->count();
        $product = $Product
            ->with(['partners' => function($query) {
                $query->select('partner_name', 'partner_short_name', 'partner_id','id');
             }])
            ->orderBy('p_id','desc')
            ->skip(($currentCount-1)*$pageSize)
            ->take($pageSize)
            ->get()
            ->toArray();
//        DB::enableQueryLog();

//        return DB::getQueryLog();
        $data = [
            'page_data' => $product,
            'total' => $total,
        ];
        return MaYiResponse::response($data);
    }

生成不重复的机构编号

//机构编号生成规则 100000 + 随机六位数
$partner_no = DB::select('select group_concat(partner_no) as partner_no from my_partners');

$str = array_diff(range(100000, 999999), explode(',', $partner_no['partner_no']));
shuffle($str);

laravel查看框架版本：php artisan --version

laravel SQL查询语句

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