在CakePHP 3中的MySQL存储函数的ORDER BY

Question

我正在使用cakePHP 3.我在mysql数据库中有一个用户定义的函数(UDF或Routine).该函数接受一个参数并返回一个整数值.我必须在MySQL order子句中订购返回的值.

我知道mysql查询使用该功能.即

SELECT customer_id FROM table_name ORDER BY routine_name(param1);         //param1 is 'customer_id' which I have written after SELECT

但我不知道如何在cakePHP 3中构建此查询.如果有人知道解决方案,答案将是欣赏.

这是我的cakePHP 3代码.

$purchasesTable = TableRegistry::get("Purchases");
$query = $purchasesTable->find();

$sf_val = $query->func()->routine_name(['Purchases.customer_id' => 'literal']);
$query->select();
$query->order(
    //    Routine/Function call should be here as per MySQL query.
    //    So, I think here I have to do something.
);

Answer 1

我建议你仔细看看(API)文档,这里都提到了.您可以传递表达式对象Query::order(),如果需要指定方向,还可以Query::orderAsc()和Query::orderDesc().

所以

$expression = $query->func()->routine_name(['Purchases.customer_id' => 'literal']);
$query->order($expression);

要么

$query->orderAsc($expression);

要么

$query->orderDesc($expression);

也可以看看

• Cookbook>数据库访问和ORM>查询生成器>选择数据

• API>\Cake\Database\Query :: order()

• API>\Cake\Database\Query :: orderAsc()

• API>\Cake\Database\Query :: orderDesc()