SQL Server : list by Nearest Birthday - sql

Question

Table A - column B [DateTime]
Need list users in that table, ordering at nearest birthday. Users who have already made birthday should be at the end of the list considering them for the following year.
select B from A (order by/where)?
Table Example
USER DATE
MARCELO 1988-04-11
RICARDO 1965-12-30
WILSON 1977-02-20
PABLO 1985-01-10
JOHN NULL
Expected Result
WILSON 20/02 (Month/Day)
MARCELO 11/04
RICARDO 30/12
PABLO 10/01
(JOHN NOT IN THE LIST)

Answer 1

Test Data
DECLARE #TABLE TABLE(Name VARCHAR(100),Dob DATETIME)
INSERT INTO #TABLE VALUES
('Mark', '19961017'),('Josh', '19801119'),('Sam', '19700709'),
('Vicky', '19500210'),('Dom', '19890308'),('Paul', '19840401')
,('Nick', NULL)
Query
SELECT Name, CAST(MONTH(Dob) AS NVARCHAR(2))
+ '/' + CAST(DAY(Dob) AS NVARCHAR(2)) [Dob Month/Day]
FROM #TABLE
WHERE DATEPART(DAYOFYEAR,Dob) - DATEPART(DAYOFYEAR,GETDATE()) > 0
ORDER BY ABS(DATEPART(DAYOFYEAR,Dob) - DATEPART(DAYOFYEAR,GETDATE()))
Result Set
User vicky will be filtered out as birthday is gone.
╔══════╦═══════════════╗
║ Name ║ Dob Month/Day ║
╠══════╬═══════════════╣
║ Dom ║ 3/8 ║
║ Paul ║ 4/1 ║
║ Sam ║ 7/9 ║
║ Mark ║ 10/17 ║
║ Josh ║ 11/19 ║
╚══════╩═══════════════╝
Result set is ordered by who's birthday is next

Answer 2

select name, birthdate
from yourtable
where birthdate is not null
order by datepart(dy,dateadd(d,- DATEPART(dy, getdate()),birthdate ))

Answer 3

This solution:
"wraps around" for a full year.
and also allows a "how many months to project out" filter.
IF OBJECT_ID('tempdb..#Employee') IS NOT NULL
begin
drop table #Employee
end
CREATE TABLE #Employee
(
SurrogateKeyIDENTITY int not null IDENTITY (1,1) ,
NameOf varchar(12) not null ,
BirthDate datetime not null
)
Insert into #Employee (NameOf, BirthDate)
Select 'A', '01/01/1999'
UNION ALL Select 'B', '01/16/1941'
UNION ALL Select 'C', '01/29/1965'
UNION ALL Select 'D', '02/13/1944'
UNION ALL Select 'P', '02/14/1978'
UNION ALL Select 'Q', '02/15/1984'
UNION ALL Select 'R', '03/13/1948'
UNION ALL Select 'S', '04/16/1983'
UNION ALL Select 'T', '05/17/1953'
UNION ALL Select 'U', '07/19/1959'
UNION ALL Select 'V', '08/16/1959'
UNION ALL Select 'W', '09/1/1959'
UNION ALL Select 'X', '10/30/1959'
UNION ALL Select 'Y', '11/16/1959'
UNION ALL Select 'Z', '12/31/1972'
Declare #MyCURRENT_TIMESTAMP datetime
/* select #MyCURRENT_TIMESTAMP = CURRENT_TIMESTAMP */
select #MyCURRENT_TIMESTAMP = '02/14/2014'
Declare #NumberOfMonthsToGoOut int
select #NumberOfMonthsToGoOut = 12
;WITH myCalculationsCTE (NameOf, BirthDate, [NoYearBirthDate] , [NoYearCurrentDate] )
AS
(
SELECT NameOf, BirthDate
, DATEFROMPARTS( 1900 , MONTH(BirthDate), DAY (BirthDate)) [NoYearBirthDate]
, DATEFROMPARTS( 1900 , MONTH(#MyCURRENT_TIMESTAMP), DAY (#MyCURRENT_TIMESTAMP)) [NoYearCurrentDate]
FROM #Employee
WHERE BirthDate IS NOT NULL
)
,
myCTE (NameOf, BirthDate, [NoYearBirthDate] , [NoYearCurrentDate] , DerivedMonthDiff)
AS
(
SELECT NameOf, BirthDate
, [NoYearBirthDate]
, [NoYearCurrentDate]
, [DerivedMonthDiff] = CASE
WHEN [NoYearBirthDate] >= [NoYearCurrentDate]
then DATEDIFF(m , [NoYearCurrentDate], [NoYearBirthDate] )
else
DATEDIFF(m , [NoYearCurrentDate], [NoYearBirthDate]) + 12 end
FROM myCalculationsCTE
)
SELECT NameOf, BirthDate , [NoYearBirthDate] , [NoYearCurrentDate]
, DerivedMonthDiff
, MONTH([NoYearBirthDate]) [Month]
, DAY ([NoYearBirthDate]) [DayOf]
FROM myCTE
where [DerivedMonthDiff] <= #NumberOfMonthsToGoOut
order by DerivedMonthDiff , MONTH([NoYearBirthDate]) , DAY ([NoYearBirthDate])
IF OBJECT_ID('tempdb..#Employee') IS NOT NULL
begin
drop table #Employee
end

Answer 4

SELECT Name, CAST(MONTH(BIRTHDAY) AS NVARCHAR(2))
+ '/' + CAST(DAY(BIRTHDAY) AS NVARCHAR(2)) [Dob Month/Day],DATEPART(DAYOFYEAR,BIRTHDAY) as [dayofyear],
case when (DATEPART(DAYOFYEAR,BIRTHDAY) - DATEPART(DAYOFYEAR,GETDATE()) > 0)
THEN
DATEPART(DAYOFYEAR,BIRTHDAY) - DATEPART(DAYOFYEAR,GETDATE())
ELSE
DATEPART(DAYOFYEAR,BIRTHDAY) + 365-DATEPART(DAYOFYEAR,GETDATE())
END
AS [DAYSTILLBURTHDAY]
FROM CONTACTS
WHERE BIRTHDAY <> '9999-01-01 00:00:00.000'
ORDER BY (case when (DATEPART(DAYOFYEAR,BIRTHDAY) - DATEPART(DAYOFYEAR,GETDATE()) > 0)
THEN
DATEPART(DAYOFYEAR,BIRTHDAY) - DATEPART(DAYOFYEAR,GETDATE())
ELSE
DATEPART(DAYOFYEAR,BIRTHDAY) + 365-DATEPART(DAYOFYEAR,GETDATE())
END)