Run PRODUCT interpreter as an inferior process.
If buffer `*SQL*' exists but no process is running, make a new process.
If buffer exists and a process is running, just switch to buffer `*SQL*'.
To specify the SQL product, prefix the call with
C-u. To set the buffer name as well, prefix
the call to M-x sql-product-interactive with
C-u C-u.
(Type C-h m in the SQL buffer for a list of commands.)
(fn &optional PRODUCT NEW-NAME)