System for generating queries to various databases

Question

Database

Good afternoon.
You need a software tool (preferably open source) that can make selections from various databases (mysql, db2, cache, etc...).
Mandatory with separation of rights: The administrator enters queries to the databases, and also specifies the necessary query parameters. The user sees only a list of allowed queries, and when the query is executed, they are shown a list of parameters for input (eg date from .., date to ..). The output is a query result with the ability to export to tabular formats.

Answer 1

I can’t advise ready-made solutions, but for your task you can write a simple web application (for example, in Ruby On Rails).