在Laravel的'join'或'where'中使用'='之间有什么区别吗？

Question

我用过两种方式:

$this->data = DB::table('projects')
     ->select('companies_info.*', 'project_roles_types.name AS project_role_name')
     ->join('project_companies_members', 'project_companies_members.project_id', 'projects.project_id')
     ->where($some_variable, $project_id)
     ->get();

和:

$this->data = DB::table('projects')
    ->select('companies_info.*', 'project_roles_types.name AS project_role_name')
    ->join('project_companies_members', 'project_companies_members.project_id', '=', 'projects.project_id')
    ->where($some_variable, '=', $project_id)
    ->get();

对我而言,添加或删除=标志的工作方式相同.有人知道这是否允许？如果是这样,最好的方法是什么？谢谢.

Answer 1

根据源中的函数定义:

// Here we will make some assumptions about the operator. If only 2 values are
// passed to the method, we will assume that the operator is an equals sign
// and keep going. Otherwise, we'll require the operator to be passed in.

因此,您可以看到,如果省略=第二个参数,查询构建器将默认将其放在那里,这与您描述的行为一致.

参考