Comments on: SQL Puzzle: SQL Advance Query – Generate the report on Missing Year – Month data

By: Sarfaraz Mohammed

Sarfaraz Mohammed — Mon, 23 Dec 2019 12:19:29 +0000

DECLARE @Dates TABLE
(YearMonthCol INT)

INSERT @Dates
VALUES
(‘201501’)
,(‘201506’)
,(‘201601’)
,(‘201608’)
,(‘201702’)
,(‘201704′)

DECLARE @MinDate VARCHAR(8),@MaxDate VARCHAR(8)
SELECT @MinDate=CONCAT(MIN(d.YearMonthCol),’01’),@MaxDate=CONCAT(MAX(d.YearMonthCol),’01’) FROM @Dates d

;WITH CTE_Data
AS
(
SELECT TOP (DATEDIFF(MONTH,@MinDate,@MaxDate)+1)
CONVERT(VARCHAR(6),DATEADD(MONTH, ROW_NUMBER() OVER(ORDER BY a.object_id) – 1, @MinDate),112) AS AllMonths
FROM sys.all_objects a
CROSS JOIN sys.all_objects b
)
SELECT AllMonths FROM CTE_Data cd
ORDER BY 1 DESC

By: Dinesh.IS

Dinesh.IS — Fri, 27 Oct 2017 08:22:03 +0000

;
WITH CTE
As
(Select Convert(DateTime,Convert(VarChar(6),YearMonthCol)+’01’) As DateAndTime From Dates
),
N
As
(Select Min(DateAndTime) As FromDate,Max(DateAndTime) As EndDate
From CTE
Union All
Select DateAdd(M,1,FromDate) As FromDate,EndDate
From N Where DateAdd(M,1,FromDate)<=EndDate)
Select Left(Convert(VarChar,FromDate,111),7) As AllMonths From N

By: Dinesh.IS

Dinesh.IS — Fri, 27 Oct 2017 08:21:36 +0000

;
WITH CTE
As
(Select Convert(DateTime,Convert(VarChar(6),YearMonthCol)+’01’) As DateAndTime From Dates
)
,
N
As
(Select Min(DateAndTime) As FromDate,Max(DateAndTime) As EndDate
From CTE
),
F
As
(Select FromDate,EndDate
From N
Union All
Select DateAdd(M,1,FromDate),EndDate
From F Where DateAdd(M,1,FromDate)<=EndDate
)
Select Left(Convert(VarChar,FromDate,111),7) As AllMonths From F