Return 0 with dates having empty results [duplicate] - sql

Question

I want to show all dates between two dates when there is any date data missing then its should show zero in val column .
declare #temp table (
id int identity(1,1) not null,
CDate smalldatetime ,
val int
)
INSERT STATEMENT FOR DATA TO CHECK
insert into #temp select '10/2/2012',1
insert into #temp select '10/3/2012',1
insert into #temp select '10/5/2012',1
insert into #temp select '10/7/2012',2
insert into #temp select '10/9/2012',2
insert into #temp select '10/10/2012',2
insert into #temp select '10/13/2012',2
insert into #temp select '10/15/2012',2
Retrieve records between first day of month and today
select * from #temp where CDate between '10/01/2012' AND '10/15/2012'
As i run this query its show me all data between these two dates but i want to also include missing dates with val=0
SQL FIDDLE WITH SAMPLE DATA

Answer 1

;with d(date) as (
select cast('10/01/2012' as datetime)
union all
select date+1
from d
where date < '10/15/2012'
)
select t.ID, d.date CDate, isnull(t.val, 0) val
from d
left join temp t
on t.CDate = d.date
order by d.date
OPTION (MAXRECURSION 0) -- use this if your dates are >99 days apart
You need to make up the dates, so I've use a recursive common table expression here.
SQL Fiddle
MAXRECURSION number
Specifies the maximum number of recursions allowed for this query. number is a nonnegative
integer between 0 and 32767. When 0 is specified, no limit is applied. If this option is
not specified, the default limit for the server is 100.
When the specified or default number for MAXRECURSION limit is reached during query
execution, the query is ended and an error is returned.

Answer 2

This will work as long as there are less than 2047 days between from and to dates
declare #from smalldatetime = '10/01/2012'
declare #to smalldatetime = '10/15/2012'
select t.id, dateadd(day, number,#from), isnull(val, 0) val from #temp t
right join master..spt_values s
on dateadd(d, s.number, #from) = t.CDate
where
datediff(day, #from, #to ) > s.number
and s.type = 'P'

Answer 3

I think the best way to do this is to create your own table with dates (you can also use master.dbo.spt_values, but I personally don't like that solution)
declare #Temp_Dates table (CDate datetime)
declare #Date datetime
select #Date = (select min(CDate) from temp)
while #Date <= (select max(CDate) from temp)
begin
insert into #Temp_Dates (CDate)
select #Date
select #Date = dateadd(dd, 1, #Date)
end
select D.CDate, isnull(T.id, 0) as id
from #Temp_Dates as D
left outer join temp as T on T.CDate = D.CDate
you can also use recursive solution with CTE

Answer 4

DECLARE #min DATETIME,
#max DATETIME,
#val INT
SELECT #min = Min(CDATE),
#max = Max(CDATE)
FROM TEMP
DECLARE #temp TABLE
(
CDATE SMALLDATETIME,
VAL INT
)
WHILE #min < #max
BEGIN
SELECT #val = VAL
FROM TEMP
WHERE CDATE = #min
INSERT #temp
VALUES (#min,
#val)
SET #min = Dateadd(D, 1, #min)
SET #val = 0
END
SELECT *
FROM #temp

Answer 5

Declare #temp Table(id int identity(1,1) not null,CDate smalldatetime ,val int)
insert into #temp select '10/2/2012',1
insert into #temp select '10/3/2012',1
insert into #temp select '10/5/2012',1
insert into #temp select '10/7/2012',2
insert into #temp select '10/9/2012',2
insert into #temp select '10/10/2012',2
insert into #temp select '10/13/2012',2
insert into #temp select '10/15/2012',2
DECLARE #startDate DATE= '10/01/2012'
DECLARE #endDate DATE= '10/15/2012'
SELECT t.Id, X.[Date],Val = COALESCE(t.val,0)
FROM
(SELECT [Date] = DATEADD(Day,Number,#startDate)
FROM master..spt_values
WHERE Type='P'
AND DATEADD(day,Number,#startDate) <= #endDate)X
LEFT JOIN #temp t
ON X.[Date] = t.CDate

Answer 6

using a recursive cte with min and max
declare #T table (id int identity(1,1) primary key, dt date not null, val int not null);
insert into #T (dt, val) values
('10/2/2012',1)
, ('10/3/2012',1)
, ('10/5/2012',1)
, ('10/7/2012',2)
, ('10/9/2012',2)
, ('10/10/2012',2)
, ('10/13/2012',2)
, ('10/15/2012',2);
--select * from #T;
with cte as
( select min(dt) as dt, max(dt) as mx
from #T
union all
select dateadd(dd, 1, dt), mx
from CTE
where dt < mx
)
select c.dt, isnull(t.val, 0) as val
from cte c
left join #T t
on c.dt = t.dt
order by c.dt
option (maxrecursion 0);
dt val
---------- -----------
2012-10-02 1
2012-10-03 1
2012-10-04 0
2012-10-05 1
2012-10-06 0
2012-10-07 2
2012-10-08 0
2012-10-09 2
2012-10-10 2
2012-10-11 0
2012-10-12 0
2012-10-13 2
2012-10-14 0
2012-10-15 2