Sign() returns -1 if the number in the parenthesis is lower than 0.
Sign() returns 1 if the number in the parenthesis is greater than 0.
Sign() returns 0 if the number in the parenthesis is 0.
That's how sign works. It might be really helpful in composition with an ABS
function (if you need to remember the sign).
For example the following expression will always return the original value:
Select Value, Sign(Value) "Sign", Abs(Value) * Sign(Value) "Calculated
Value"
from (Values(111222,0), (-123,5), (0), (10), (-100)) x (Value)
Mit freundlichen Grüßen / Best regards
Birgitta Hauser
"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training them
and keeping them!"
?Train people well enough so they can leave, treat them well enough so they
don't want to.? (Richard Branson)
-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Gad
Miron
Sent: Sonntag, 23. Mai 2021 08:36
To: midrange-l@xxxxxxxxxxxxxxxxxx
Subject: SQL sign() function
Hello sages
Just found a weird behavior of SQL Sign function
Select 2 * sign(1) from FileA returns 2
Select 2 * sign(-1) from FileA returns -2 Select 2 * sign(0) from FileA
returns 0
is it a bug? a feature? or is only me.
Gad
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