I hacked together a simple command line app in Python for running SQL using any installed DB-API driver.

Usage depends on the arguments of the connect() method of your DB driver. For example:

python pysql.py psycopg "host=localhost dbname=mydb user=myuser password=mypassword"

or:

python pysql.py sqlite mysqlite.db

or with named parameters:

python pysql.py pymssql --host=localhost --user=sa --password=sapassword

Download: pysql.py