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Allow subqueries to reference aggregate-only columns of free tables; treat non-COUNT aggregate functions as possibly returning NULL
author Adam Chlipala <adam@chlipala.net>
date Sat, 15 Jan 2011 14:53:13 -0500
parents 4359e185d3af
children
rev   line source
adam@1301 1 (* Workhorse function, which [main] will call *)
adamc@416 2 fun counter n = return <xml><body>
adamc@416 3 Current counter: {[n]}<br/>
adamc@416 4 <a link={counter (n + 1)}>Increment</a><br/>
adamc@416 5 <a link={counter (n - 1)}>Decrement</a>
adamc@416 6 </body></xml>
adamc@416 7
adamc@416 8 fun main () = counter 0