This refers to options database, wherein because of changes in price the strike prices change. As the strikes go deeply out of money the liquidity of options at those strikes squeezes. Finally this may lead to strikes being traded / no-traded on a daily basis (Trades somedays, Somedays not).
While running exploration, run on 1 last day/bar returns values of earlier days as well. The work around would be giving the "From-To" dates in parameter. However the same when run in "batch exploration" needs to be managed. The temporary turnaround was achieved through a filter:
Now if I put "datewindow = dn >= startdate AND dn <= enddate;" the exploration runs only on single day that's today. That means the exploration remains void for tomorrow till the new datapoints are imported. Similarly issue arises on weekend, when data is for Friday & exploration is run on Sunday. Hence have put in "datewindow = dn >= startdate-3 AND dn <= enddate;".
On logical scale, I wish to a check to find last traded date of a reference symbol and then run the exploration through batch for that date.
In the thread you referenced, I clearly stated that in v 6.30 (and above) qt.Date can be read as text (code was also given there). Note that follow-up questions to that thread should be posted in that thread, not here.
@pushkan It is very explicitly mentioned as TJ has said. You have to Read
After you read, test it yourself.
I've posted 5 replies here and a possible solution but there is no appreciation or Like in any post.