Today I’ve released a free Developer plugin at http://www.servoyguy.com/servoy_components. This plugin allows developers to visually create SQL queryies using drag-and-drop of tables, columns, and joins between tables, without having to know any SQL code. The plugin is based on the SQLeonardo, which is the same package that the new iReport uses for their query builder.
The site contains a YouTube video showing how to use the plugin, along with installation instructions and download link.
SQL Query Builder Plugin: http://www.servoyguy.com/servoy_components