mybatis/mybatis-3 — pull request #48 by FrantaM (2013-05-14 12:18:58+00:00)
Title: Using select in constructor/arg ignores that arg in duplicate checks

It's similar to [Issue 392](https://code.google.com/p/mybatis/issues/detail?id=392).
If you have resultMap like:
```xml

```

then the `arg` with `select` is ignored and posts are unique based on `blog_id` (which, in this case, is the same). Hence all posts but one are ignored.