How to set the maxrecursion option for a CTE inside a Table-Valued-Function

Question

I\'m facing a problem declaring the maxrecursion option for a CTE inside a TVF.

Here is the CTE (a simple calendar):

DECLARE @DEBUT DATE = \'1/1/11\'         


        

Answer 1

Another way to handle this is to break up the problem into a pair of CTEs, neither of which hits the recursion limit of 100. The first CTE creates a list with the begin date for each month in the range. The second CTE then fills in all the days of each month. As long as the input range is fewer than 100 months, it should work fine. If an input range of greater than 100 months is required, the same idea could be expanded with a third CTE for years added ahead of the months CTE.

CREATE FUNCTION [liste_jour]    
(@debut datetime, @fin datetime)    
RETURNS TABLE   
AS      
RETURN          
(   
    WITH CTE_MOIS AS
    (           
        SELECT JOUR_DEBUT = @debut
        UNION ALL
        SELECT DATEADD(MONTH, 1, CTE_MOIS.JOUR_DEBUT)
          FROM CTE_MOIS         
         WHERE DATEADD(MONTH, 1, CTE_MOIS.JOUR_DEBUT) <= @fin
    ),

    CTE_JOUR AS
    (           
        SELECT JOUR = CTE_MOIS.JOUR_DEBUT
          FROM CTE_MOIS
        UNION ALL           
        SELECT DATEADD(DAY, 1, CTE_JOUR.JOUR)
          FROM CTE_JOUR
         WHERE MONTH(CTE_JOUR.JOUR) = MONTH(DATEADD(DAY, 1, CTE_JOUR.JOUR)) AND
            DATEADD(DAY, 1, CTE_JOUR.JOUR) <= @FIN
    )

    SELECT JOUR
      FROM CTE_JOUR
)