please assist with my relatively simple query if you can.
I would like a SQL query to pull records where for each ID, the Status = 16 was the latest update date.
From this list:
ID Date Status
000203E 1988-01-01 00:00:00.000 16
000203E 1970-01-01 00:00:00.000 15
000236S 1970-01-01 00:00:00.000 15
000236S 1982-12-15 00:00:00.000 16
000678W 1996-06-05 00:00:00.000 16
000678W 1970-01-01 00:00:00.000 15
000755U 1984-04-16 00:00:00.000 14
000755U 1970-01-01 00:00:00.000 16
Desired output
000203E 1988-01-01 00:00:00.000 16
000678W 1996-06-05 00:00:00.000 16
Thanks in advance!
One method to get the ids is to use aggregation:
select id
from t
group by id
having max(date) = max(case when status = 16 then date end);
If you want the complete rows, you can use in or exists or a join. Or just impute the results:
select id, max(date) as date, 16 as status
from t
group by id
having max(date) = max(case when status = 16 then date end);
Another method to get the complete rows is:
select t.*
from t
where t.status = 16 and
t.date = (select max(t2.date) from t t2 where t2.id = t.id);
SELECT table.*
FROM table
INNER JOIN
(
SELECT id, max(date) max_date
FROM table
WHERE status_id = 16
GROUP BY id
) latest_records
ON
table.id = latest_records.id
AND table.date = latest_records.max_date
SELECT ID, DATE, Status
FROM YOUR_TABLE T1
INNER JOIN (SELECT ID, MAX(Date) DATE
FROM YOUR_TABLE
GROUP BY ID) T2
WHERE T1.ID = T2.ID AND T1.DATE = T2.DATE;
Related
Attached the image how the data looks like. In my table I have 3 columns id, start date, and end date, and values like this:
id start date end date
-------------------------------
100 2015-01-01 2015-12-31
100 2016-01-10 2018-12-31
200 2015-02-15 2016-03-15
200 2016-03-15 2016-12-31
300 2016-01-01 2016-12-31
400 2017-01-01 2017-12-31
500 2017-02-01 2017-12-31
600 2017-01-15 2017-03-05
600 2017-02-01 2018-12-31
I want my output to be
id start date end date
--------------------------------
100 2015-01-01 2015-12-31
100 2016-01-10 2018-12-31
200 2015-02-15 2016-12-31
300 2016-01-01 2016-12-31
400 2017-01-01 2017-12-31
500 2017-02-01 2017-12-31
600 2017-01-15 2018-12-31
Query:
select
id, *
from
dbo.test_sl
where
id in (select id
from dbo.test_sl
where end_date >= start_date
group by id)
Please help me get the output I am looking for.
This is an example of a gaps-and-islands problem. In this case, you want to find adjacent rows that do not overlap for the same id. These are the starts of groups. A cumulative sum of the starts of a group providing a grouping number, which can be used for aggregation.
In a query, this looks like:
select id, min(startdate), max(enddate)
from (select t.*,
sum(isstart) over (partition by id order by startdate) as grp
from (select t.*,
(case when exists (select 1
from test_sl t2
where t2.id = t.id and
t2.startdate < t.startdate and
t2.enddate >= t.startdate
)
then 0 else 1
end) as isstart
from test_sl t
) t
) t
group by id, grp;
Assuming that only two records can be combined together, you can LEFT JOIN the table with itself and then use a CASE to display the end date of the self-joined record, if available.
SELECT
t1.id,
min(t1.start_date),
CASE WHEN t2.end_date IS NULL THEN t1.end_date ELSE t2.end_date END
FROM
table t1
LEFT JOIN table t2
ON t1.id = t2.id
AND t2.start_date > t1.start_date
AND t2.start_date <= t1.end_date
GROUP BY
t1.id,
CASE WHEN t2.end_date IS NULL THEN t1.end_date ELSE t2.end_date END
ORDER BY 1
Tested in this SQL Fiddle
Here's a solution that uses a Recursive CTE.
It basically loops through the dates per id, and keeps the smallest start_date for the overlapping end_date/start_date.
Then the result is grouped so there are no more overlaps.
Test here on rextester.
WITH SRC AS
(
SELECT id, start_date, end_date,
row_number() over (partition by id order by start_date) as rn
FROM test_sl
)
, RCTE AS
(
SELECT id, rn, start_date, end_date
FROM SRC
WHERE rn = 1
UNION ALL
SELECT t.id, t.rn, iif(r.end_date >= t.start_date, r.start_date, t.start_date), t.end_date
FROM RCTE r
JOIN SRC t ON t.id = r.id AND t.rn = r.rn + 1
)
SELECT id, start_date, max(end_date) as end_date
FROM RCTE
GROUP BY id, start_date
ORDER BY id, start_date;
I have a problem with writing a query.
Row data is as follow :
DATE CUSTOMER_ID AMOUNT
20170101 1 150
20170201 1 50
20170203 1 200
20170204 1 250
20170101 2 300
20170201 2 70
I want to know when(which date) the sum of amount for each customer_id becomes more than 350,
How can I write this query to have such a result ?
CUSTOMER_ID MAX_DATE
1 20170203
2 20170201
Thanks,
Simply use ANSI/ISO standard window functions to calculate the running sum:
select t.*
from (select t.*,
sum(t.amount) over (partition by t.customer_id order by t.date) as running_amount
from t
) t
where running_amount - amount < 350 and
running_amount >= 350;
If for some reason, your database doesn't support this functionality, you can use a correlated subquery:
select t.*
from (select t.*,
(select sum(t2.amount)
from t t2
where t2.customer_id = t.customer_id and
t2.date <= t.date
) as running_amount
from t
) t
where running_amount - amount < 350 and
running_amount >= 350;
ANSI SQL
Used for the test: TSQL and MS SQL Server 2012
select
"CUSTOMER_ID",
min("DATE")
FROM
(
select
"CUSTOMER_ID",
"DATE",
(
SELECT
sum(T02."AMOUNT") AMOUNT
FROM "TABLE01" T02
WHERE
T01."CUSTOMER_ID" = T02."CUSTOMER_ID"
AND T02."DATE" <= T01."DATE"
) "AMOUNT"
from "TABLE01" T01
) T03
where
T03."AMOUNT" > 350
group by
"CUSTOMER_ID"
GO
CUSTOMER_ID | (No column name)
----------: | :------------------
1 | 03/02/2017 00:00:00
2 | 01/02/2017 00:00:00
db<>fiddle here
DB-Fiddle
SELECT
tmp.`CUSTOMER_ID`,
MIN(tmp.`DATE`) as MAX_DATE
FROM
(
SELECT
`DATE`,
`CUSTOMER_ID`,
`AMOUNT`,
(
SELECT SUM(`AMOUNT`) FROM tbl t2 WHERE t2.`DATE` <= t1.`DATE` AND `CUSTOMER_ID` = t1.`CUSTOMER_ID`
) AS SUM_UP
FROM
`tbl` t1
ORDER BY
`DATE` ASC
) tmp
WHERE
tmp.`SUM_UP` > 350
GROUP BY
tmp.`CUSTOMER_ID`
Explaination:
First I select all rows and subselect all rows with SUM and ID where the current row DATE is smaller or same as all rows for the customer. From this tabe i select the MIN date, which has a current sum of >350
I think it is not an easy calculation and you have to calculate something. I know It could be seen a little mixed but i want to calculate step by step. As fist step if we can get success for your scenario, I believe it can be made better about performance. If anybody can make better my query please edit my post;
Unfortunately the solution that i cannot try on computer is below, I guess it will give you expected result;
-- Get the start date of customers
SELECT MIN(DATE) AS DATE
,CUSTOMER_ID
INTO #table
FROM TABLE t1
-- Calculate all possible date and where is sum of amount greater than 350
SELECT t1.CUSTOMER_ID
,SUM(SELECT Amount FROM TABLE t3 WHERE t3.DATE BETWEEN t1.DATE
AND t2.DATE) AS total
,t2.DATE AS DATE
INTO #tableCalculated
FROM #table t1
INNER JOIN TABLE t2 ON t.ID = t2.ID
AND t1.DATE != t2.DATE
WHERE total > 350
-- SELECT Min amount and date for per Customer_ID
SELECT CUSTOMER_ID, MIN(DATE) AS DATE
FROM #tableCalculated
GROUP BY ID
SELECT CUSTOMER_ID, MIN(DATE) AS GOALDATE
FROM ( SELECT cd1.*, (SELECT SUM(AMOUNT)
FROM CustData cd2
WHERE cd2.CUSTOMER_ID = cd1.CUSTOMER_ID
AND cd2.DATE <= cd1.DATE) AS RUNNINGTOTAL
FROM CustData cd1) AS custdata2
WHERE RUNNINGTOTAL >= 350
GROUP BY CUSTOMER_ID
DB Fiddle
I have a table like this:
Id FKId Amount1 Amount2 Date
-----------------------------------------------------
1 1 100,0000 33,0000 2018-01-18 19:57:39.403
2 2 50,0000 10,0000 2018-01-19 19:57:57.097
3 1 130,0000 40,0000 2018-01-20 19:58:13.660
5 2 44,0000 2,0000 2018-01-21 11:11:00.000
How to get rows from 3 - 5 (all that have dates 2018-01-21 or 2018-01-21) but also their previous row regarding FKId (1 and 2)?
Thank you
In most databases, you can use the ANSI standard lead() function:
select t.*
from (select t.*, lead(date) over (partition by fkid order by date) as next_date
from t
) t
where date in ('2018-01-20', '2018-01-21') or
next_date in ('2018-01-20', '2018-01-21');
Alternatively, if you just want all records where the date is bigger than some date and the previous record, this logic also works:
select t.*
from t
where t.date >= (select max(t2.date)
from t t2
where t2.fkid = t.fkid and t2.date < '2018-01-20'
);
Could any one help me for the below request.
I have data of One row for the Login DateTime and another row for the Logout Datetime. The rest of the fields are same. I need to combine both rows in to one with Login (Datetime) and Logout (Datetime).
Sample Data
ID Code DateTime User Status
35 100 1/1/2014 14:50 a IN
35 100 1/1/2014 15:45 a OUT
35 100 1/1/2014 18:20 a IN
35 100 1/1/2014 19:10 a OUT
Result should look like below
ID Code Datetime1 Datetime2 User
35 100 2014-01-01 14:50 2014-01-01 15:45 a
35 100 2014-01-01 18:20 2014-01-01 19:10 a
Thank you.
Use the ROW_NUMBER() windowing function to determine the closest 'OUT' status for each 'IN' iteration:
SELECT * FROM (
SELECT t1.ID, t1.Code, t1.[Datetime] as Datetime1, tNext.[Datetime] as Datetime2, t1.[User],
ROW_NUMBER() OVER (PARTITION BY t1.ID, t1.Code, t1.[User], t1.[Datetime] ORDER BY tNext.[Datetime]) rowNum
FROM myTable t1
JOIN myTable tNext ON
t1.ID = tNext.ID AND
t1.Code = tNext.Code AND
t1.[User] = tNext.[User] AND
tNext.Status = 'OUT' AND
t1.[Datetime] < tNext.[Datetime]
WHERE t1.Status = 'IN' ) t
WHERE rowNum = 1
ORDER BY ID, Code, [User], Datetime1
SQLFiddle here
This finds the next date/time with an 'OUT' after each 'IN' :
(simplified to match small data sample, extra code required)
With YourData as (
SELECT 35 as ID, 100 as Code, '1/1/2014 14:50' as yDatetime,
'a' as yUser, 'IN' AS status UNION ALL
SELECT 35,100, '1/1/2014 15:45', 'a', 'OUT' UNION ALL
SELECT 35,100, '1/1/2014 18:20', 'a', 'IN' UNION ALL
SELECT 35,100, '1/1/2014 19:10', 'a', 'OUT'
)
SELECT
ID,
Code,
yDatetime AS When_IN,
(SELECT Min(yDatetime) FROM YourData yd2
WHERE (yd2.yDatetime>YourData.yDatetime)
AND Status='OUT'
-- extra matching needed here
-- for ID, CODE, User fields in use
) AS When_OUT,
yUser as _User
FROM YourData WHERE Status='IN'
Results :
35 100 1/1/2014 14:50 1/1/2014 15:45 a
35 100 1/1/2014 18:20 1/1/2014 19:10 a
Try
select
a.id,
a.code,
a.datetime as datetime1,
b.datetime as datetime2,
a.user
from
(select
id,
code,
datetime,
user
from
table
where
status='IN') a
inner join
(select
id,
code,
datetime,
user
from
table
where
status='OUT') b
on
(a.user=b.user and a.id=b.id and a.code=b.code)
try this
SELECT lin.ID, lin.CODE, lin.USER, lin.DateTime as LoginDate,
(select top 1 DateTime from TABLE lout
where lout.data > lin.data and lin.id=lout.id
and lin.user = lout.user and lin.code = lout.code and status = 'out'
order by lout.dateTime
) as LogOutDate
FROM TABLE lin
where lin.status='IN'
I have a table with many IDs and many dates associated with each ID, and even a few IDs with no date. For each ID and date combination, I want to select the ID, date, and the next largest date also associated with that same ID, or null as next date if none exists.
Sample Table:
ID Date
1 5/1/10
1 6/1/10
1 7/1/10
2 6/15/10
3 8/15/10
3 8/15/10
4 4/1/10
4 4/15/10
4
Desired Output:
ID Date Next_Date
1 5/1/10 6/1/10
1 6/1/10 7/1/10
1 7/1/10
2 6/15/10
3 8/15/10
3 8/15/10
4 4/1/10 4/15/10
4 4/15/10
SELECT
mytable.id,
mytable.date,
(
SELECT
MIN(mytablemin.date)
FROM mytable AS mytablemin
WHERE mytablemin.date > mytable.date
AND mytable.id = mytablemin.id
) AS NextDate
FROM mytable
This has been tested on SQL Server 2008 R2 (but it should work on other DBMSs) and produces the following output:
id date NextDate
----------- ----------------------- -----------------------
1 2010-05-01 00:00:00.000 2010-06-01 00:00:00.000
1 2010-06-01 00:00:00.000 2010-06-15 00:00:00.000
1 2010-07-01 00:00:00.000 2010-08-15 00:00:00.000
2 2010-06-15 00:00:00.000 2010-07-01 00:00:00.000
3 2010-08-15 00:00:00.000 NULL
3 2010-08-15 00:00:00.000 NULL
4 2010-04-01 00:00:00.000 2010-04-15 00:00:00.000
4 2010-04-15 00:00:00.000 2010-05-01 00:00:00.000
4 NULL NULL
Update 1:
For those that are interested, I've compared the performance of the two variants in SQL Server 2008 R2 (one uses MIN aggregate and the other uses TOP 1 with an ORDER BY):
Without an index on the date column, the MIN version had a cost of 0.0187916 and the TOP/ORDER BY version had a cost of 0.115073 so the MIN version was "better".
With an index on the date column, they performed identically.
Note that this was testing with just these 9 records so the results could be (very) spurious...
Update 2:
The results hold for 10,000 uniformly distributed random records. The TOP/ORDER BY query takes so long to run at 100,000 records I had to cancel it and give up.
If your db is oracle, you can use lead() and lag() functions.
SELECT id, date,
LEAD(date, 1, 0) OVER (PARTITION BY ID ORDER BY Date DESC NULLS LAST) NEXT_DATE,
FROM Your_table
ORDER BY ID;
SELECT
id,
date,
( SELECT date
FROM table t1
WHERE t1.date > t2.date
ORDER BY t1.date LIMIT 1 )
FROM table t2
I think self JOIN would be faster than subselect.
WITH dates AS (
SELECT 1 AS ID, '2010-05-01' AS Date
UNION ALL SELECT 1, '2010-06-01'
UNION ALL SELECT 1, '2010-07-01'
UNION ALL SELECT 2, '2010-06-15'
UNION ALL SELECT 3, '2010-08-15'
UNION ALL SELECT 3, '2010-08-15'
UNION ALL SELECT 4, '2010-04-01'
UNION ALL SELECT 4, '2010-04-15'
UNION ALL SELECT 4, ''
)
SELECT
dates.ID,
dates.Date,
nextDates.Date AS Next_Date
FROM
dates
LEFT JOIN
dates nextDates
ON nextDates.ID = dates.ID
AND nextDates.Date > dates.Date
LEFT JOIN
dates noLower
ON noLower.ID = nextDates.ID
AND noLower.Date < nextDates.Date
AND noLower.Date > dates.Date
WHERE
dates.Date > 0
AND noLower.ID IS NULL
https://www.db-fiddle.com/f/4sWRLt2hxjik5HqiJ21ez8/1