How to get Sum of column by converting them to money(Currently they are in varchar)

Vishal Pand3y asked:

I Have a table let's say a in which I have stored NetAmount as varchar and There is a TechId which is repeating in the table
Currently data is in format like this
PK TechId NetAmount
1 2003 500
2 2003 200
3 2004 400
4 2004 100

I need data like this
TechID CountOfTechId SumOfNetAmount
2003 2 700
2004 2 500

I am able to get Count of Tech ID using Count(TechId) and group by
but how can I add Net amount which is in varchar

-Thanks

Tags: SQL, SQL Server 2008R2

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