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I've made a try with this:
SELECT count(journey) from DETALLTRAJECTES where EXISTS (SELECT NULL
from CAPTRAJECTE,DETALLTRAJECTES where pkey=journey and fecha=20030423);
and it doesn't work properly (at least it doesn't do what I need...)
In my last mail (this is for Nabil) I made a mistake in what I told you.
The date to filter the rows to remove is in CAPTRAJECTES, and the rows
to remove are in DETALLTRAJECTES. CAPTRAJECTES has a field called "pkey"
and DETALLTRAJECTES another called "journey" that are the join between
the two tables.
When I execute the select above noted it returns me about 15.000 rows.
But if I make this one:
SELECT count(journey) from CAPTRAJECTES,DETALLTRAJECTES where
pkey=journey and fecha=20030423;
it only returns me about 5.000. So the first one has any error in the
conception.
Where do I make the mistake? (thanks you all for your patience.....)
Josep Sànchez
~ [papapep]
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