SELECT TOP con número variable

[Mithrandir]

Un ejemplo del BOL vale más que mil palabras (digo, teclazos ):

Código:

DECLARE @IntVariable INT
DECLARE @SQLString NVARCHAR(500)
DECLARE @ParmDefinition NVARCHAR(500)

/* Build the SQL string once.*/
SET @SQLString =
     N'SELECT * FROM pubs.dbo.employee WHERE job_lvl = @level'
SET @ParmDefinition = N'@level tinyint'
/* Execute the string with the first parameter value. */
SET @IntVariable = 35
EXECUTE sp_executesql @SQLString, @ParmDefinition,
                      @level = @IntVariable
/* Execute the same string with the second parameter value. */
SET @IntVariable = 32
EXECUTE sp_executesql @SQLString, @ParmDefinition,
                      @level = @IntVariable