SUM() problem!

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#451

From: Atanas Kulishev
Date: Wed, 21 Nov 2007 09:04

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Hello,
I have problem with SUM() function in Firebird 1.5.4

Please help!
Total rows in table is 1 000 000, sumed rows is: 3934


SELECT SUM( N_ST ) FROM T_NALI WHERE C_NOMER= 'DAAD'
Result>>> 19627960,11 - that is ok

SELECT SUM( N_ST )-SUM( N_ST ) FROM T_NALI WHERE C_NOMER= 'DAAD'
Result>>> 0 - that is ok

Look this now:
SELECT SUM( N_ST )-19627960.11 FROM T_NALI WHERE C_NOMER= 'DAAD'
Result>>> 1,4901161193847 - ?????? what's happen

SELECT SUM( N_ST )-19627960.10 FROM T_NALI WHERE C_NOMER= 'DAAD'
Result>>> 0,0100000128149 - ??????

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Subject: SUM() problem!
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