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Query of the Sum of a Time field

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Query of the Sum of a Time field Firebird SQL Development forum discussing administration, Firebird SQL syntax, or other Firebird SQL-related topics. Firebird is the evolution of Borland's Interbase product.

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Old February 20th, 2005, 12:39 PM
rbeaulieu rbeaulieu is offline
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Query of the Sum of a Time field
Hello,

I would like to make a sum with Time field but I got a error message concerning bad aritmetic datatype.

This is my query :

SELECT SUM(TEMPS_DIRECT) FROM WORKS;

How I can make a time's sum ?

Thanks !
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Old February 21st, 2005, 01:54 AM
shammat shammat is offline
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Dumb question: what's the sum of 14:36 and 22:51?
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Old February 21st, 2005, 03:43 AM
IvanP IvanP is offline
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Quote:
Originally Posted by rbeaulieu
I would like to make a sum with Time field but I got a error message concerning bad aritmetic datatype.

This is my query :

SELECT SUM(TEMPS_DIRECT) FROM WORKS;

How I can make a time's sum ?

TIME datatype holds day time, not time duration, so it has no sense to sum TIMEs directly. If you (incorrectly) hold time duration in TIME field, the workaround for computing the sum is this

SELECT SUM(TEMPS_DIRECT - cast('0:0' as time)) FROM WORKS;

(the result is number of seconds)

Ivan
http://www.volny.cz/iprenosil/interbase/
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