Do you know any free tool which would constitute a web-based SQL database generic query interface, incl.:
SELECT
queries Platform / language / etc. is of second importance.
Re:dash (Redash) is a promising new open-source player on the market. From their own website:
re:dash is our take on freeing the data within our company in a way that will better fit our culture and usage patterns.
Prior to re:dash, we tried to use traditional BI suites and discovered a set of bloated, technically challenged and slow tools/flows. What we were looking for was a more hacker'ish way to look at data, so we built one.