On Thu, Oct 05, 2017 at 07:29:08PM +0000, Warren Master wrote:
all_vw is a merge table with three tables all with identical structure
Warren Do the plan's look correct, ie include the proper member tables? Niels
intraday
history
currentyear
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My merge tables do not return consistent results
I have tried to refresh statistics
ANALYZE sys. intraday (asofdate) MINMAX
ANALYZE sys. history (asofdate) MINMAX
ANALYZE sys. currentyear (asofdate) MINMAX
still same issue
the issue exists for a few dates that I checked, there are many days that do work on the merge table , all dates work on the view and the individual tables.
I thought it might be an issue with statistics then the conversion function made it work on the merge table , so now at a loss.
the following query on the merge table return no rows
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select fundid,sum(curdlttot) as fxt
from vw where asofdate='2017-10-02'
group by fundid
The following does return data from the merge table albeit, much slower – after converting date value
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select fundid,sum(curdlttot) as fxt
from vw where asofdate='2017-10-02D'
group by fundid
select fundid,sum(curdlttot) as fxt
from vw where asofdate= date_to_str(asofdate, '%Y-%m-%d') = '2017-10-02'
group by fundid
the followings query on the subtable of the merge table returns data with no issues or performance
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select fundid,sum(curdlttot) as fxt
from currentyear where asofdate='2017-10-02'
group by fundid
creating a view on the union of all three tables returns data as expected
create view test_all as
select * from intraday
union all
select * from history
union all
select * from currentyear
select fundid,sum(curdlttot) as fxt
from test_all where asofdate='2017-10-02'
group by fundid
Warren S. Master
Chief Technology Officer, CISO
TRG Management LP
280 Park Avenue - 30th floor/West - New York, NY 10017
Phone 212.984.3504
Email warren.master@rohatyngroup.com
Web www.rohatyngroup.com
Linkedin www.linkedin.com/in/warrenmaster
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