$d['a.cold'] = 2;
$d['b.postid'] = $up_id['postid'];
$d['b.f_id'] = $up_id['id'];
$d['workintime'] = array('lt',$lastday);
$down2 = db::name('admin_user')
->field('a.*,a.id as user_id,b.*')
->alias('a')
// ->join('role b','a.roleid= b.id ')
->join('role b','find_in_set(b.id,a.roleid)')
->where($d)
->select();
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20.7.17 笔记算数运算符 复合运算符重载 比较运算重载 多态 设计原则 类的单一职责 依赖倒置 组合复用原则 里氏替换 迪米特法则 矩阵转置原理
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