vijay750

### What happened? Every connection causes a call to the tsql "USE [dbname]" - See [tdslogin.c](https://github.com/babelfish-for-postgresql/babelfish_extensions/blob/BABEL_5_X_DEV/contrib/babelfishpg_tds/src/backend/tds/tdslogin.c#L2035) These use a lot of cpu, and sometimes, when many clients connect, these show...