Why is my SQL incorrectly doing math?

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I am building a report and I put in the standard equation of (487-556)/556. The answer should be -.12. However, the result shows -334. How? I cannot think of any sequence that would equal -334. When I change it to (487-556/556) or 487-556/556 it = -228.

What I have tried:

I have tried 487-556/556. (487-556/556). (487-556)/556

Posted 12-Mar-24 6:56am

TLeisusmc

Updated 12-Mar-24 6:57am

v2

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[no name] 12-Mar-24 13:23pm

"A miminum reproduceable example". Otherwise, it's hearsay.

PIEBALDconsult 12-Mar-24 23:34pm

What system? Some don't do the order of operations correctly.

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OriginalGriff · Accepted Answer · 2024-03-12T07:29:00

Solution 1

If I try your values I get what I expect:

SQL

SELECT (487-556)/556

Gives me 0 as it is integer arithmetic.

SQL

SELECT (487.0-556.0)/556.0

Gives me -0.1241 because it's floating point arithmetic.

Check your data sources and make sure the types are what you think they are.

Posted 12-Mar-24 7:29am

OriginalGriff

Updated 12-Mar-24 7:30am

v2

Comments

Maciej Los 13-Mar-24 5:35am

5ed!