I have a large excel worksheet that I want to add to my database.
Can I generate an SQL insert script from this excel worksheet?
Depending on the database, you can export to CSV and then use an import method.
MySQL - http://dev.mysql.com/doc/refman/5.1/en/load-data.html
PostgreSQL - http://www.postgresql.org/docs/8.2/static/sql-copy.html