If you have data encompassing up to several dozen tables and hundreds or even thousands of fields, and you'd like to create a web site to allow users to perform custom queries on the data, page though the results, and export to a variety of formats, then you should consider Harvest. Harvest comes with a dynamic query builder that allows users to easily find the fields they are interested in and define query conditions on them. Users can then view the results, choose which fields to display, and export the data to CSV, Excel, JSON, R, or SAS. Users can also name and save queries (consisting of query conditions and display columns) and optionally share specified queries with other users of your web site. Even if you don't intend to make the data public, a private or intranet instance of Harvest can be a great way to explore and understand complex data.
First off, if you haven't already done so, [try the Demo]({{ site.baseurl }}demo/). This will show you