Mercurial > urweb
annotate demo/increment.ur @ 1168:69f1d39d3f2d
Use COALESCE to hide NULL results of aggregate functions; fix bug with improper ordering of query result columns
| author | Adam Chlipala <adamc@hcoop.net> |
|---|---|
| date | Thu, 25 Feb 2010 14:55:35 -0500 |
| parents | ed06e25c70ef |
| children | e6bc6bbd7a32 |
| rev | line source |
|---|---|
| adamc@648 | 1 sequence seq |
| adamc@648 | 2 |
| adamc@648 | 3 fun increment () = nextval seq |
| adamc@648 | 4 |
| adamc@782 | 5 fun main () = |
| adamc@648 | 6 src <- source 0; |
| adamc@648 | 7 return <xml><body> |
| adamc@648 | 8 <dyn signal={n <- signal src; return <xml>{[n]}</xml>}/> |
| adamc@908 | 9 <button value="Update" onclick={n <- rpc (increment ()); set src n}/> |
| adamc@648 | 10 </body></xml> |