How to specify multiple ids without using &parents when using pdoResources

Getting Started
1 
## Problem Description  
I want to use `&ids` to specify the page `id` manually instead of using `&parents` to select all pages under a folder.  
However, the following code does not display the page content correctly:  

```php
[[!pdoResources?
    &ids=`1,2,3` 
    &tpl=`line-detail`
    &select=`id,content`
    &includeTVs=`1`
]]

But when using &parents, it works fine:

[[!pdoResources?
    &parents=`1` 
    &tpl=`line-detail`
    &select=`id,content`
    &includeTVs=`1`
]]
2

Answered here: How to specify multiple ids without using &parents when using pdoResources?