SQL “if exists…” dynamic query

Question

Suppose I have a query stored in a variable like this (it\'s actually dynamically populated and more complex, but this is for demonstration purposes):

DECLAR         


        

Answer 1

Try Executing the Dynamic query and use @@RowCount to find the existence of rows.

DECLARE @Query  NVARCHAR(1000) = 'SELECT * FROM [dbo].[Mytable]',
        @rowcnt INT

EXEC Sp_executesql @query

SELECT @rowcnt = @@ROWCOUNT

IF @rowcnt > 0
  BEGIN
      PRINT 'row present'
  END