This Query Give Me Error In C # That " Syntax Error Near '>' How Can I Solve It ?

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C#

String sql = "SELECT StockID,Config.ConfigID,ProductName,Features,Price,sum(Quantity) from Stock,Config where Stock.ConfigID=Config.ConfigID group by StockID,productname,Price,Features,Config.ConfigID having sum(quantity > 0) order by ProductName";

Posted 20-Jun-14 1:25am

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hypermellow · Answer 1 · 2014-06-20T01:37:00

Solution 1

Hi,

Try the following:

C#

String sql = "SELECT StockID,Config.ConfigID,ProductName,Features,Price,sum(Quantity) from Stock,Config where Stock.ConfigID=Config.ConfigID group by StockID,productname,Price,Features,Config.ConfigID having (sum(quantity) > 0) order by ProductName";

I modified the bracket surrounding the sum expression.

C#

String sql = "SELECT StockID,Config.ConfigID,ProductName,Features,Price,sum(CONVERT(INT, Quantity)) from Stock,Config where Stock.ConfigID=Config.ConfigID group by StockID,productname,Price,Features,Config.ConfigID having (sum(CONVERT(INT,quantity)) > 0) order by ProductName"

Hope it helps.

Posted 20-Jun-14 1:37am

hypermellow

Updated 20-Jun-14 3:14am

v2

Comments

Member 10720633 20-Jun-14 7:46am

now error is operand datatype nvarchar is invalid for sum operator

[no name] 20-Jun-14 7:49am

Are you storing numbers as strings?

Member 10720633 20-Jun-14 7:58am

no in int

CHill60 20-Jun-14 8:27am

The only way you would get this error with the SQL you posted would be if the database column Quantity (or quantity) is of type NVarchar - so either you need to change the database column type or you haven't posted the sql that is causing this new error

hypermellow 20-Jun-14 9:17am

As the other posters have stated, the datatype error is caused by the data type of the quantity column.

I've updated my solution to convert the quantity column to an int, when passing it to the sum function.

Hope it helps.

CHill60 20-Jun-14 16:18pm

For interest - this link https://www.connectionstrings.com/sql-server-data-types-reference/[^] has a handy list of sql column types and notes on best use