I want to compare two rows in a table. Retrieve record where line 2 value for a particular year is less than the line 1 value for the same year:
Year Line Dollar
2001 1 $50
2001 2 $50
2002 1 $100
2002 2 $100
2003 1 $150
2003 2 $100
The result is
Year Line Dollar
2003 1 $150
2003 2 $100
Thanks
select a.*, b.*
from yourtable a, yourtable b
where a.year = b.year
and a.line = 1
and b.line = 2
and a.dollar > b.dollar
Related
i want to subtract values from of month 7 salary from month 8 salary
using t-sql can anyone help me i m new in tsql
ID Year Month Salary
1088 2017 8 -29766.250 0.000
1088 2015 7 -58.500 0.000
The simplest approach: use a subquery for each value (i.e. replace a and b in select a - b with subqueries):
select
(select salary from mytable where year = 2017 and month = 8) -
(select salary from mytable where year = 2015 and month = 7) as diff;
I have two table "book" and "authorCollection". Because a book may have multi-authors, I hope to get the average number of authors in table "book" which published after year 2000(inclusive).
For example:
Table Book:
key year
1 2000
2 2001
3 2002
4 1999
Table authorCollection:
key author
1 Tom
1 John
1 Alex
1 Mary
2 Alex
3 Tony
4 Mary
The result should be (4 + 1 + 1) / 3 = 2;(key 4 publish before year 2000).
I write the following query statement, but not right, I need to get the number of result in subquery, but cannot give it a label "b", How can i solve this problem? And get the average number of author? I still confused about "COUNT(*) as count" meaning....Thanks.
SELECT COUNT(*) as count, b.COUNT(*) AS total
FROM A
WHERE key IN (SELECT key
FROM Book
WHERE year >= 2000
) b
GROUP BY key;
First, count number of authors for a key in a subquery. Next, aggregate needed values:
select avg(coalesce(ct, 0))
from book b
left join (
select key, count(*) ct
from authorcollection
group by 1
) a
using (key)
where year >= 2000;
A sample as well as handling 'divide by zero' error:
select case when count(distinct book.key)=0
then null
else count(authorCollection.key is not null)/count(distinct book.key)
end as avg_after_2000
from book
left join authorCollection on(book.key=authorCollection.key)
where book.year >= 2000
I'm trying to query some transactional data to establish the CurrentProductionHours value for each Report at the end of each month.
Providing there has been a transaction for each report in each month, that's pretty straight-forward... I can use something along the lines of the code below to partition transactions by month and then pick out the rows where TransactionByMonth = 1 (effectively, the last transaction for each report each month).
SELECT
ReportId,
TransactionId,
CurrentProductionHours,
ROW_NUMBER() OVER (PARTITION BY [ReportId], [CalendarYear], [MonthOfYear]
ORDER BY TransactionTimestamp desc
) AS TransactionByMonth
FROM
tblSource
The problem that I have is that there will not necessarily be a transaction for every report every month... When that's the case, I need to carry forward the last known CurrentProductionHours value to the month which has no transaction as this indicates that there has been no change. Potentially, this value may need to be carried forward multiple times.
Source Data:
ReportId TransactionTimestamp CurrentProductionHours
1 2014-01-05 13:37:00 14.50
1 2014-01-20 09:15:00 15.00
1 2014-01-21 10:20:00 10.00
2 2014-01-22 09:43:00 22.00
1 2014-02-02 08:50:00 12.00
Target Results:
ReportId Month Year ProductionHours
1 1 2014 10.00
2 1 2014 22.00
1 2 2014 12.00
2 2 2014 22.00
I should also mention that I have a date table available, which can be referenced if required.
** UPDATE 05/03/2014 **
I now have query which is genertating results as shown in the example below but I'm left with islands of data (where a transaction existed in that month) and gaps in between... My question is still similar but in some ways a little more generic - What is the best way to fill gaps between data islands if you have the dataset below as a starting point?
ReportId Month Year ProductionHours
1 1 2014 10.00
1 2 2014 12.00
1 3 2014 NULL
2 1 2014 22.00
2 2 2014 NULL
2 3 2014 NULL
Any advice about how to tackle this would be greatly appreciated!
Try this:
;with a as
(
select dateadd(m, datediff(m, 0, min(TransactionTimestamp))+1,0) minTransactionTimestamp,
max(TransactionTimestamp) maxTransactionTimestamp from tblSource
), b as
(
select minTransactionTimestamp TT, maxTransactionTimestamp
from a
union all
select dateadd(m, 1, TT), maxTransactionTimestamp
from b
where tt < maxTransactionTimestamp
), c as
(
select distinct t.ReportId, b.TT from tblSource t
cross apply b
)
select c.ReportId,
month(dateadd(m, -1, c.TT)) Month,
year(dateadd(m, -1, c.TT)) Year,
x.CurrentProductionHours
from c
cross apply
(select top 1 CurrentProductionHours from tblSource
where TransactionTimestamp < c.TT
and ReportId = c.ReportId
order by TransactionTimestamp desc) x
A similar approach but using a cartesian to obtain all the combinations of report ids/months.
in the first step.
A second step adds to that cartesian the maximum timestamp from the source table where the month is less or equal to the month in the current row.
Finally it joins the source table to the temp table by report id/timestamp to obtain the latest source table row for every report id/month.
;
WITH allcombinations -- Cartesian (reportid X yearmonth)
AS ( SELECT reportid ,
yearmonth
FROM ( SELECT DISTINCT
reportid
FROM tblSource
) a
JOIN ( SELECT DISTINCT
DATEPART(yy, transactionTimestamp)
* 100 + DATEPART(MM,
transactionTimestamp) yearmonth
FROM tblSource
) b ON 1 = 1
),
maxdates --add correlated max timestamp where the month is less or equal to the month in current record
AS ( SELECT a.* ,
( SELECT MAX(transactionTimestamp)
FROM tblSource t
WHERE t.reportid = a.reportid
AND DATEPART(yy, t.transactionTimestamp)
* 100 + DATEPART(MM,
t.transactionTimestamp) <= a.yearmonth
) maxtstamp
FROM allcombinations a
)
-- join previous data to the source table by reportid and timestamp
SELECT distinct m.reportid ,
m.yearmonth ,
t.CurrentProductionHours
FROM maxdates m
JOIN tblSource t ON t.transactionTimestamp = m.maxtstamp and t.reportid=m.reportid
ORDER BY m.reportid ,
m.yearmonth
I have a list of purchases by date. EG:
ItemCode, Purchase Date, Purchase Qty
XXX, 01 Jan 2012, 10
XXX, 10 Jan 2012, 5
For the item I have a corresponding Sales transactions:
Item, Sales Date, Sales Qty
XXX, 02 Jan 2012, -5
XXX, 09 Jan 2012, -3
XXX, 11 JAN 2012, -3
I am looking to get a SQL query (Without a cursor), to get the balance on each purchase order quantity. I.e Run each purchase (First in first out) to 0. (For the purposes of aging inventory )
How can you join the Purchases to the Sales to get this balance remaining each purchased Inventory Lot? Is this possible without a cursor?
Yes.
You union the two tables together, and run a running total on the resulting set.
;with cte as
(
select itemcode, purchasedate as tdate, purchaseqty as qty from purchases
union
select itemcode, salesdate, salesqty from sales
)
select
t1.*,
SUM(t2.qty)
from cte t1
left join cte t2
on t1.tdate>=t2.tdate
and t1.item = t2.item
group by t1.item, t1.pdate, t1.qty
To get the stock remaining at any particular time the same principal applies.
select p1.*,
case when (select SUM(abs(qty)) from sales) > SUM(p2.qty) then 0
else SUM(p2.qty) - (select SUM(abs(qty)) from sales) end as stockremaining
from purchases p1
left join purchases p2 on p1.item = p2.item
and p2.purchasedate <= p1.purchasedate
group by p1.purchasedate, p1.item, p1.qty
gives
1 2012-01-01 10 0
1 2012-01-10 5 4
I'm trying to update a date dimension table from the accounting years table of our ERP System. If I run the following Query:
SELECT fcname FYName
,min(fdstart) YearStart
,max(fdend) YearEnd
,max(fnnumber) PeriodCount
FROM M2MData01.dbo.glrule GLR
GROUP BY fcname
I get the following data:
FYName YearStart YearEnd PeriodCount
FY 2000 1/1/2000 12:00:00 AM 12/31/2000 12:00:00 AM 12
FY 2001 1/1/2001 12:00:00 AM 12/31/2001 12:00:00 AM 12
FY 2002 1/1/2002 12:00:00 AM 12/31/2002 12:00:00 AM 12
FY 2003 1/1/2003 12:00:00 AM 12/31/2003 12:00:00 AM 12
FY 2004 1/1/2004 12:00:00 AM 12/31/2004 12:00:00 AM 12
FY 2005 1/1/2005 12:00:00 AM 12/31/2005 12:00:00 AM 12
FY 2006 1/1/2006 12:00:00 AM 12/31/2006 12:00:00 AM 12
FY 2007 1/1/2007 12:00:00 AM 12/31/2007 12:00:00 AM 12
FY 2008 1/1/2008 12:00:00 AM 12/31/2008 12:00:00 AM 12
FY 2009 1/1/2009 12:00:00 AM 12/31/2009 12:00:00 AM 12
FY 2010 1/1/2010 12:00:00 AM 12/31/2010 12:00:00 AM 12
In my case my company has 12 periods per year which roughly correspond to months. Basically, I am trying to create an update statement to set Fiscal Quarters which will follow this logic:
1. If PeriodCount is divisible by 4 then the number of periods in a quarter is PeriodCount/4.
2. If PeriodNumber is in the first quarter (in this case periods 1 through 3) then FiscalQuarter =1 and so on for quarters 2 through 4.
The problem is that I cannot be guaranteed that everyone uses 12 periods, some companies I support use a different number such as 10.
I started creating the following select statement:
DECLARE #QuarterSize INT
DECLARE #SemesterSize INT
SELECT TST.Date,
CASE WHEN glr.PeriodCount % 4 = 0 THEN
-- Can Be divided into quarters. Quarter size is PeriodCount/4
set #quartersize = (GLR.PeriodCount/4)
CASE
END
ELSE 0
End
FROM m2mdata01.dbo.AllDates TST
INNER JOIN (
SELECT fcname FYName
,min(fdstart) YearStart
,MAX(fdend) YearEnd
,MAX(fnnumber) PeriodCount
FROM M2MData01.dbo.glrule GLR
GROUP BY fcname ) GLR
ON TST.DATE >= GLR.YearStart AND TST.DATE <= GLR.YearEnd
Can I set the value of a variable inside a case statement like this? What's the best way to accomplish this? Am I forced to use a cursor statement and check each date in my dimension against the range in the table above?
Not sure what you want to do here - you can assign variable outside case statement in select clause. Such as
SELECT
SomeCol,
#var = CASE
WHEN condition1 THEN some value
WHEN condition2 THEN other value
END,
OtherCol
FROM
...
Note that #var value be set to the value evaluated at the last row. As said earlier, I am not sure how you intend to use you #quartersize variable. If the value is needed on every row then u shouldn't be using variable at all.
It may not be the most elegant solution, but here is what I ended up with.
I linked a copy of the script details to a grouped by version of the same thing.
SELECT fcname FYName, fdstart PeriodStart, fdend PeriodEnd, fnnumber PeriodNo, GLRAGG.AGGFYName,
GLRAGG.QuarterSize, GLRAGG.PeriodCount, GLRAGG.Quarterific, GLRAGG.SemesterSize, GLRAGG.Semesterific
FROM M2MData01.dbo.glrule GLR
INNER JOIN
(SELECT fcname AGGFYName, min(fdstart) YearStart,
MAX(fdend) YearEnd, MAX(fnnumber) PeriodCount,
(Max(fnnumber) / 4) QuarterSize, CASE WHEN Max(fnnumber) % 4 = 0 THEN 'Yes' ELSE 'No' END AS Quarterific,
(Max(fnnumber) / 2) SemesterSize, CASE WHEN Max(fnnumber) % 2 = 0 THEN 'Yes' ELSE 'No' END AS Semesterific
FROM M2MData01.dbo.glrule
GROUP BY fcname) GLRAGG
ON GLR.FCNAME = GLRAGG.AGGFYNAME
This isn't a big deal because that table only has 12 rows for each year, in this case only 132 total rows.
That produces every fiscal period with the total number of periods in each Fiscal Year and whether it can be evenly divisible by 4 and 2. It then uses the "Quarterific" value to determine whether to do so in the update statement and I can get by wtihout using variables.
It may not be the best way, but it works and is performant given the small data set.