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I have two colums on mysql database table which holds float values. What I need is to get the sum of two colums and my mysql query is as follow

SELECT amntGot,commission, SUM(amntGot+commission) as amt from mytable;

Issue I got is the sum value goes wrong in the result For example

amntGot = 4.6175 commission = 0.3825 Then amt goes to 4.999999821186066 . I expect result as 5 Which is (4.6175+0.3825) I dont know why the result gives me 4.999999821186066 instead of 5

I could not find a dolution from StackOverflow, so any solution would be much appreciated,

I have attached screenshots of few results below

enter image description here

Ajith
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    Welcome to the wild world of floating point math. Are these `FLOAT` columns or `DECIMAL`? – tadman Oct 16 '20 at 06:12
  • Yeah, a `SUM` on a single value is kind of pointless. The `SUM()` function is supposed to be used with an aggregator. It's not like Excel's `SUM()`. – tadman Oct 16 '20 at 06:13
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    @tadman I can't see how those results came from that query, hence I deleted the comment. – Nick Oct 16 '20 at 06:13
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    @Nick You're right in that the `SUM()` is out of place though. – tadman Oct 16 '20 at 06:14
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    You need to `ROUND` your results. See https://stackoverflow.com/questions/588004/is-floating-point-math-broken – Nick Oct 16 '20 at 06:15

1 Answers1

2

You can try this:

SELECT  amntGot,commission, ROUND(SUM(amntGot+commission),0) as amt from mytable;
Soumendra Mishra
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