Workaround for 'Divide by zero error encountered'

Today I just want to write a sample explaining the workaround for 'Divide by zero error encountered.' error in SQL Server.

Sample Table Structure for demo purpose

Create Table dbo.TestDivideByZero
(
WebSite varchar(50),
NumOfHits int,
Income int
)
Go

Insert dummy records

Insert into dbo.TestDivideByZero values ('a.com', 100, 20)
Insert into dbo.TestDivideByZero values ('b.com', 10, 0)
Insert into dbo.TestDivideByZero values ('c.com', 300, 25)
Insert into dbo.TestDivideByZero values ('d.com', 1300, 225)
Go

Query to produce 'Divide by zero error encountered.' error

Select WebSite, NumOfHits / Income from dbo.TestDivideByZero
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This would throw the below error:

Msg 8134, Level 16, State 1, Line 1
Divide by zero error encountered.

Workaround

Make use of NULLIF function. Like, if the value is 0 then return NULL. For better understanding execute the below query and see it for yourself.

Select WebSite, NumOfHits / NullIf(Income,0) as ColumnName from dbo.TestDivideByZero
Go

Hope this helps!