From EMS Database Management Solutions:
EMS SQL Query for Oracle is a useful tool that lets you to build SQL queries to Oracle databases. Visual Oracle query building as well as direct editing of a query text is available. User-friendly graphical interface allows you to connect to Oracle databases, select tables and fields for a query to Oracle server, and set the selection criteria. Using this query utility you can work with several Oracle queries at once, edit query text in the powerful SQL editor, view the execution results in different modes, create Oracle queries with unions and sub queries visually, build diagrams based on queries, view Oracle query execution plans and perform any other operations you may need in your work with Oracle database queries.