ms sql server 2005 error converting varchar to numeric

Posted on 2011-09-28
Medium Priority
Last Modified: 2012-05-12
not sure why are having issues converting here..

 declare @home_spread nvarchar(max)

declare @home_spread_numeric numeric(30,2)

-- the value will look like '+33.5' or '-4.5 or +7'
set @home_spread = (select home_team_spread from schedule_shoe where shoe_id = @shoe_id)

-- ==================================================
set @home_spread = (replace(@home_spread,'-',''))

set @home_spread = (replace(@home_spread,'+',''))

-- =================================
-- ======================================
if @home_spread not like '%.%'
     set @home_spread_numeric = cast(@away_spread as numeric(30,2)) + '.0'
Question by:GlobaLevel
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LVL 10

Author Comment

ID: 36720784
Any ideas?
LVL 51

Expert Comment

by:Vitor Montalvão
ID: 36813856
Where it fails?
And in the last line  
set @home_spread_numeric = cast(@away_spread as numeric(30,2)) + '.0'
where is the @away_spread came from? You don't need the " +'0' " because you are converting already to 2 decimal places
LVL 22

Accepted Solution

8080_Diver earned 2000 total points
ID: 36814284
I suspect thaqt the line in question shoud read:
set @home_spread_numeric = cast(@home_spread as numeric(30,2)) + '.0'

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As previously stated, forget the '.0', not only because it is unneeded but also because you are trying to add an Alphanumeric (i.e. CHAR or VARCHAR) to a numeric.  If you feel compelled to add 0 tenths to the value, use:
set @home_spread_numeric = cast(@home_spread as numeric(30,2)) + 0.0

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LVL 22

Expert Comment

ID: 36814289
Alternatively you could use:
SET @home_spread = @home_spread + '.0'
set @home_spread_numeric = cast(@home_spread as numeric(30,2))

Open in new window

LVL 19

Expert Comment

by:Bhavesh Shah
ID: 36814649

I made bit change in SQL.

check out.
declare @home_spread nvarchar(max),@shoe_id int

declare @home_spread_numeric numeric(30,2)

-- the value will look like '+33.5' or '-4.5 or +7'
set @home_spread = (select Replace(Replace(home_team_spread,'+',''),'-','') from schedule_shoe where shoe_id = @shoe_id)

IF IsNumeric(@home_spread)=1
     set @home_spread_numeric = cast(@home_spread as numeric(30,1))

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