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USE [KDSkladi_MSCRM]
GO

/****** Object:  UserDefinedFunction [dbo].[calculateAge]    Script Date: 05.04.2016 13:25:10 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO


CREATE FUNCTION [dbo].[calculateAge] 
(
	-- Add the parameters for the function here
	@birthdate date
)
RETURNS int
AS
BEGIN
	-- Declare the return variable here
	DECLARE @Result int

	-- Add the T-SQL statements to compute the return value here
	SELECT @Result=FLOOR(DATEDIFF(day,@birthdate,GETUTCDATE()) / 365.242199)

	-- Return the result of the function
	RETURN @Result

END

/****** Object:  UserDefinedFunction [dbo].[getNextBirthDate]    Script Date: 05.04.2016 13:25:39 ******/

CREATE FUNCTION [dbo].[getNextBirthDate] 
(
	-- Add the parameters for the function here
	@birthdate datetime
)
RETURNS datetime
AS
BEGIN
	-- Declare the return variable here
	DECLARE @Result datetime
	DECLARE @todays_date date = GETUTCDATE()
	
	SET @birthdate=DATEADD(HOUR,2,@birthdate)
	
	-- Add the T-SQL statements to compute the return value here
	SELECT @Result=
      DATEADD(YEAR,
            -- Number of whole years between date of birth and today's date plus 1
            CASE                               
                  -- Month of date of birth greater than month of today's date
                  WHEN DATEPART(MONTH, @birthdate) > DATEPART(MONTH, @todays_date)
                  THEN DATEDIFF(YEAR, @birthdate, @todays_date)                              
 
                  -- Month of date of birth same as month of today's date and day of date of birth greater than day of today's date
                  WHEN DATEPART(MONTH, @birthdate) = DATEPART(MONTH, @todays_date) AND DATEPART(DAY, @birthdate) > DATEPART(DAY, @todays_date)
                  THEN
                        CASE
                              -- Date of birth is on a leap day and this year is not a leap year
                              WHEN DATEPART(MONTH, @birthdate) = 2 AND DATEPART(DAY, @birthdate) = 29 
                                          AND NOT (DATEPART(YEAR, @todays_date) % 400 = 0 OR (DATEPART(YEAR, @todays_date) % 100 <> 0 AND DATEPART(YEAR, @todays_date) % 4 = 0))
                              THEN DATEDIFF(YEAR, @birthdate, @todays_date) + 1
                              -- Else
                              ELSE DATEDIFF(YEAR, @birthdate, @todays_date)
                        END
 
                  -- Else
                  ELSE 
					CASE 
						WHEN DATEPART(MONTH, @birthdate) = DATEPART(MONTH, @todays_date) AND DATEPART(DAY, @birthdate) = DATEPART(DAY, @todays_date)
				        THEN
							DATEDIFF(YEAR, @birthdate, @todays_date)
						ELSE
						DATEDIFF(YEAR, @birthdate, @todays_date) + 1
					END
            END,
            @birthdate)

	-- Return the result of the function
	SET @Result=DATEADD(HOUR,-2,@Result)
	RETURN @Result

END
/****** Object:  StoredProcedure [dbo].[UpdateBirthDays]    Script Date: 05.04.2016 13:23:34 ******/

CREATE PROCEDURE [dbo].[UpdateBirthDays] 
	-- Add the parameters for the stored procedure here
AS
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;

    -- Insert statements for procedure here
	UPDATE C
	SET --C.avt_dayofbirth=DATEPART(day, C.birthdate),
	--C.avt_monthofbirth=DATEPART(month, C.birthdate),
	--C.avt_yearofbirth=DATEPART(year, C.birthdate),
	C.avt_age=[dbo].[calculateAge](C.birthdate),
	C.avt_nextbirthday=[dbo].[getNextBirthDate](C.birthdate)
	FROM ContactBase AS C 


END