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How to decrement a datetime field in Paradox Turn on/off line numbers in source code. Switch to Orginial background IDE or DSP color Comment or reply to this aritlce/tip for discussion. Bookmark this article to my favorite article(s). Print this article
Decrementing a datetime field in Paradox 25-Aug-02
Category
Database Others
Language
Delphi 2.x
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105
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Publisher:
DSP, Administrator
Reference URL:
DKB
			Author: Tomas Rutkauskas 

Decrementing a datetime field in Paradox

Answer:

There is a bug in Local SQL on Paradox:

Executing an Update statement on a Paradox table where '1' is being subtracted in a 
datetime field does not subtract '1', but rather adds '1'.
1   
2   // this will ADD one!
3   UPDATE SAMPLE.DB set DT = DT - 1
4   
5   // the following workaround will give the correct result:
6   UPDATE SAMPLE.DB set DT = DT + (-1)


			
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