BlocklySQL - Visual SQL Programming

BlocklySQL is a block-based, visual programming tool like Scratch but for SQL. It is the outcome of academic research at the University of Wuerzburg on the kind of errors that students who are novice in writing SQL queries make.

The research has shown that the top three errors are: wrong syntax (21%), undefned column name (13%), and wrong use of GROUP BY-clause(10%), mostly syntactic errors.Thus the idea was that a block-based editor that would eliminate such errors would make learning SQL easier.

full article on i-programmer