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# How to convert decimal to varchar

Posted on 2004-08-24
15,201 Views
Select OrderID,
'Sell--' + Convert(varchar(24), sum(CAST(Price AS DECIMAL(13,2))) )
From OrderDetail
GroupBy OrderID

I want to display price as varchar but somehow above code send an following error
"Error converting data type varchar to numeric."

I want to display result as following
OrderID Price
-----------------
1, S-212.23
2, S-46.83
3, S-912.20
4, S-52.73
0
Question by:Bharat Guru
• 2

LVL 50

Expert Comment

ID: 11885013
try
sounds like you've got some invalid data... what is the datatype of the price column?

Select OrderID,
'Sell--' +Convert(varchar(24),sum(case when isnumeric(price) when 1 then convert(decimal(13,2),Price))
else 0.00 end))
From OrderDetail
GroupBy OrderID

and use this to identify any non numerics..
select orderid , price
from orderdetail
where isnumeric(price) = 0
0

Author Comment

ID: 11885488
I actually want to do something like following

Declare @Temp CHAR (1)
Set @Temp = 'Y'

Select OrderID,
Case When @Temp = 'Y' Then
Convert(varchar(24), sum(CAST(Price AS DECIMAL(13,2)))  )
Else
sum(CAST(Price AS DECIMAL(13,2)))
End AS "Price"

From OrderDetail
GroupBy OrderID

Price is a varchar field in table
0

LVL 50

Accepted Solution

ID: 11886399
you can only do this...
you can't have multiple datatypes for a column....

Declare @Temp CHAR (1)
Set @Temp = 'Y'

Select OrderID,
Case When @Temp = 'Y' Then
Convert(varchar(24), price)
Else
convert(varchar(13),Price)
End AS "Price"
From ( select orderid,sum(cast(price as decimal(13,2))) as  price from OrderDetail
GroupBy OrderID) as x

you could use dynamic sql (or have 2 sql statements (preferred solution))

declare @sqlstm varchar(8000)
Set @sqlstm='Select orderid,' + case when @temp='Y' then 'Convert(varchar(24), sum(CAST(Price AS DECIMAL(13,2)))  ) ' else ' sum(CAST(Price AS DECIMAL(13,2)))' end + ' from orderdetail group by orderid'

exec(@sqlstm)

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