Visual SQL Builder is a tool to allow users to visually build a complete SQL statment, for postgreSQL databases without typing any clause. It can help to build complex SQL sentences to not trained people, reducing debugging, syntax and logic errors.
The Visual SQL Builderproject is a PostgreSQL Community project that is a part of the pgFoundry.
The pgFoundry page for the project is at http://pgfoundry.org/projects/vsqlbuilder, where you can find downloads, documentation, bug reports, mailing lists, and a whole lot more.