[Zope] querying status in zsql

[Dieter Maurer]

Rik Hoekstra writes:
 > A short explanation: sql queries return a result object (so does ZCatalog
 > btw), which you can't address directly in DTML (or at least I wouldn't know
 > how ;-)  If it the result object is empty it won't have a (sequence) start
 > in a dtml-in. This is the same code SearchInterfaces uses for returning a
 > 'this query has no results'.
"Result" objects behave like sequences.
You can ask for their length ("_.len") and access the elements
by subscription("[i]"). Of cause, you can use them in
"dtml-in".


Dieter