error while casting a column name

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SQL

Set FormattedValue = CASE 
                         When rg.ReferredFieldType = 'NUM' Then              
                              CAST(#PointedMslValues.Value AS         
                              NUMERIC(18,cAST(rg.ReferredDecimalPoints) )

                     --more cases...
END

I am generating a dynamic query, which is giving error.
Actually it requires integer value, while casting not a column name.

Posted 6-Feb-13 19:35pm

Ali_100

Updated 6-Feb-13 20:07pm

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

v2

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Ankur^\m/ 7-Feb-13 3:54am

The query seems wrong. The first CAST method should end after NUMERIC.

1 solution

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Aarti Meswania · Answer 1 · 2013-02-06T20:02:00

this way..

SQL

declare @AfterPoint varchar(3);
	set @Afterpoint=2;
declare @val numeric(18,9);
	set @val=1234.89535656;
declare @SQLQuery varchar(max);
	Set @SQLQuery = 'select cast(' + convert(varchar(100), @val) + ' as numeric(18,' + @AfterPoint + '))';
exec(@SQLQuery);

other solution for tabular format

SQL

declare @val numeric(18,9);
    set @val=1234.89535656;

declare @a varchar(max);
set @a='';

with a as
(
select 'NUM' as ftype, '2' as Afterpoint
union all
select 'NUM' as ftype, '3' as Afterpoint
union all
select 'NUM' as ftype, '4' as Afterpoint
)

select @a = @a + ' select ' + Afterpoint + ' as Afterpoint,convert(varchar(100),CAST(' + convert(varchar(100), @val) + ' AS NUMERIC(18,'+ Afterpoint + '))) as FormattedVal' +  ' union all '
from a
select @a=substring(@a,1,len(@a)-10);
exec(@a);

Happy Coding!
:)