[Sqlalchemy-tickets] Issue #3318: dictinct(Model) generates unexpected query (zzzeek/sqlalchemy)

[__tosh <iss...@bi...>]

New issue 3318: dictinct(Model) generates unexpected query
https://bitbucket.org/zzzeek/sqlalchemy/issue/3318/dictinct-model-generates-unexpected-query

__tosh:

Hi there,

I use SQLAlchemy 0.8.3 (so maybe it's fixed in newer releases) with MySQL 5.1.73.  
When I do the query 
```
#!python
Session.query(distinct(Model))
```
it generates something like
```
#!SQL
SELECT DISTINCT :param_1 AS anon_1;
```

Where :param_1 is replaced with Model.\_\_repr\_\_() which is a simple string.

Maybe it would be more obvious if such SQLAlchemy-queries generated the following code?

```
#!SQL
SELECT DISTINCT * AS anon_1 FROM model_table;
```