how to write dynamic sql in sp

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select @amount=tax_amnt from @tblnm where @trn_col_nm=@trn_No and tax_nm=@taxnm

this is my sql , is it possible to write this in dynmaicsql way?

Posted 31-Jan-12 1:29am

yashwant joshi

Updated 31-Jan-12 1:30am

Rajesh Anuhya

v2

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Kanasz Robert · Accepted Answer · 2012-01-31T01:31:00

Solution 1

hi,

try to use EXEC command:

http://www.mssqltips.com/sqlservertip/1160/execute-dynamic-sql-commands-in-sql-server/[^]

http://www.techrepublic.com/blog/datacenter/generate-dynamic-sql-statements-in-sql-server/306[^]

http://msdn.microsoft.com/en-us/library/ms188332.aspx[^]

Regards
Robert

Posted 31-Jan-12 1:31am

Kanasz Robert

Comments

Espen Harlinn 31-Jan-12 7:45am

5'ed!

Sanjay K. Gupta · Accepted Answer · 2012-01-31T01:47:00

Solution 2

use "exec" function this way
dec @myamt varchar(20);
exec('
declare @amount decimal(12,3);
set  @amount='+@myamt+'
select @amount=tax_amnt from @tblnm where @trn_col_nm=@trn_No and tax_nm=@taxnm')

Note: it is just a example.

Posted 31-Jan-12 1:47am

Sanjay K. Gupta

Updated 31-Jan-12 2:23am

v3

Comments

Rajesh Anuhya 31-Jan-12 8:23am

Edited: Code tags added
--RA

Rakesh Meel · Accepted Answer · 2012-01-31T02:19:00

Execute a stored procedure or function
[ { EXEC | EXECUTE } ]     { 
      [ @return_status = ]
      { module_name [ ;number ] | @module_name_var } 
        [ [ @parameter = ] { value 
                           | @variable [ OUTPUT ] 
                           | [ DEFAULT ] 
                           }
        ]
      [ ,...n ]
      [ WITH RECOMPILE ]
    }
[;];
Execute a character string
{ EXEC | EXECUTE } 
    ( { @string_variable | [ N ]'tsql_string' } [ + ...n ] )
    [ AS { LOGIN | USER } = ' name ' ]
[;];
Execute a pass-through command against a linked server
{ EXEC | EXECUTE }
    ( { @string_variable | [ N ] 'command_string [ ? ]' } [ + ...n ]
        [ { , { value | @variable [ OUTPUT ] } } [ ...n ] ]
    ) 
    [ AS { LOGIN | USER } = ' name ' ]
    [ AT linked_server_name ]
[;];