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Materalized Query Table and {CURRENT DATE}

Posted on 2008-10-20
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I'm working in SQL for AS400 iSeries V5R3 .

So, the only kind of Materialized Query Table I can build is one "MAINTAINED BY USER".
Meaning I must manually rebuild my table ...
So I have a scheduled job which starts at 6am and runs every 90 minutes until 6pm.

ONLY PROBLEM IS, I need the MQT built using TODAY's date as a logical threshhold ...
BUT ... MQT's cannot contain SPECIAL REGISTER values ... so CURRENT DATE is not allowed!

Any TRICKS on how I can build (and re-build) an MQT using TODAY's CURRENT DATE as part of the logic criteria?

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Question by:volking
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by:Kent Olsen
ID: 22760180
How about inserting the value of CURRENT DATE into a table and building the MQT based on that value?

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by:volking
ID: 22760325
@Kent .... yep, I thunk that one up myself, too ... but I had hope someone had a better trick ... that might feel "LESS" like a kludge ... grin ... as a last resort, I'll do that
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Kent Olsen earned 2000 total points
ID: 22760744
It's not that much of a kludge if the script goes something like this:

INSERT INTO myparams (pname, pvalue) values ('CurrentDate', CURRENT DATE);
CREATE TABLE .....
...
WHERE date = date (select pvalue from myparms where pname = 'CurrentDate');

  :)


It will almost look like there has been forethough and flexibility built into your processes.  :) :) :)


Kent

Kent
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