Hi,
I am using Symfony 2.3.15. I encounter following bugs when I try to implement PdoSessionHandler. I override my own class to overcome following issues. Unfortunately, the library not even throwing any exceptions for these issues.

1. Table names and Field Names are not escaped so it is not accepting any keyword.
2. Binding parameter "time" is keyword in MS SQL so it is not working.
3. Queries are not concatenated using sprintf().
4. MERGE statement is not working for MS SQL so I had to use default DELETE and INSERT.

Regards,
Asim