Error converting data type varchar to float

One of the forum member had posted a question yesterday saying she was trying to use a CASE statement and it was throwing an error as "Error converting data type varchar to float".

Let us reproduce the scenario and see the way to fix it.

--Sample table

Create table dbo.ts_vouchers

(

Lodging_Amount float

)

--Test records

Insert into dbo.ts_vouchers values (0)

Insert into dbo.ts_vouchers values (10)

Insert into dbo.ts_vouchers values (1.1)

Insert into dbo.ts_vouchers values (0)

We need to display hyphen (-) if Lodging_Amount is 0.

The below query would throw the error

SELECT

CASE Lodging_Amount

WHEN 0 THEN '-'

ELSE Lodging_Amount

END AS "Lodging Amount"

From dbo.ts_vouchers

Solution:

We need to convert the Float value Lodging_Amount as Varchar

before displaying it.

SELECT

CASE Lodging_Amount

WHEN 0 THEN '-'

ELSE Cast(Lodging_Amount as Varchar)

END AS "Lodging Amount"

From dbo.ts_vouchers

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