what does this mean?

Question

Conversion failed when converting the varchar value 'R' to data type int.

Tapan Patel · Answer

Thank you for pointing out. I missed it.   Please try this for SQL server (if you are using 2012+). If conversion fails, it returns null and you can avoid the error on conversion.   DECLARE  @String  VARCHAR (10) =  '123'    DECLARE  @ int   INT       SET  @ int  =  TRY_CONVERT( INT , @string)     SELECT  @ int    .

Afzaal Ahmad Zeeshan · Answer

@Tapan, did you even read the question? He is more likely in somewhere SQL environment (or using a reader), and then trying to convert varchar to int, where the varchar is "R". Reread the question and then try again. :-)

Tapan Patel · Answer

If you are intending to convert string to integer, you can always avoid errors by following code. int .TryParse( "x" ,  out   int  someVar);  //even parsing 12.34 would result in zero. Console.WriteLine(someVar);   which results into displaying zero as it cannot convert x to int.   int .TryParse( "123" ,  out   int  someVar);   Console.WriteLine(someVar);   results into : 123 (As expected)

Afzaal Ahmad Zeeshan · Answer

It means that your value, which is "R" cannot be converted to its relevant integer value. Please have a look at your data, "R", what do you think should be its possible integer value? None.  You can have possible conversions only for valid numeric values in varchar format, such as, '123', '654', etc. Anything that is not a valid numeric value cannot be convered to integer. Thus, the problem here.

sangeetha k · Answer

Thank you all  i figured it out it was a minor exception only the ordering of parameters where needed to be in both procedure deccleration and calling of it i did that mistake hence it shooted out an exception . Thanks everyone !!