The reason why I said "SQL:2008" is that that's the dialect specifically mentioned in this example, which I believe is Fetter's: http://wiki.postgresql.org/wiki

The reason why I said "SQL:2008" is that that's the dialect specifically mentioned in this example, which I believe is Fetter's: http://wiki.postgresql.org/wiki/Mandelbrot_set http://wiki.postgresql.org/wiki/Mandelbrot_set . It may well be that earlier versions of SQL are also Turing-complete; I haven't followed the evolution of SQL anything like closely enough to know.