I have a table as below
id pausetime resumetime
-----------------------------------------------------
1 2021-09-22 14:21:34.023 2021-09-22 14:25:37.030
2 2021-09-22 14:37:47.810 2021-09-22 14:40:58.817
I want to subtract resumetime from pausetime for all the rows, then add that time so that I can get the total time between resume and pause, number of rows can be different .
How can I do that ?
I tried this
select
dbo.TimeDifference(cast(resumetime as time),
cast(pausetime as time)
but I have to do it for all the rows.
Please help me out.
We can use DATEDIFF here along with SUM:
SELECT SUM(DATEDIFF(ss, pausetime, resumetime)) AS total_diff_in_seconds
Related
I want to calculate sumproduct in netezza table, where one column is fixed. In frist column (A) I have some numbers in DISCOUNT are discount factors. As a result I want to get sumproduct bewteen A and DISCOUNT, where DISCOUNT always start from first row.
Number in RESULTS:
14,54535 = 5/(1+2%)+3/(1+3%)+7/(1+4%),
9.737293 = 3/(1+2%)+7/(1+3%)
6.862745 = 7/(1+2%)
Always when copunting the next number in columns RESULT, we ignore the previous values from A, but always use the DISCOUNT from MATURITY=1 forward.
MATURITY
A
R
DISCOUNT
RESULT
1
5
2%
98.0392...%
14,54535...
2
3
3%
97.0874...%
9.737293...
3
7
4%
97.0874...%
6.862745...
Is the any way to do that in Neteza? Without using multiple joins for rates/discounts? Since the dimension of data can vary.
I have below requirement.
Input is like as below.
Create table Numbers
(
Num int
)
Insert into Numbers
values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15)
Create table FromTo
(
FromNum int
,ToNum int
)
Select * From FromTo
Output should be as below.
FromNum ToNum
1 5
6 10
11 15
Actual Requirement is as below.
I need to load the data for a column into a table which will have thousands of records with different no's.
Consider like below.
1,2,5,7,9,11,15,34,56,78,98,123,453,765 etc..
I need to load these into other table which is having FROM and TO columns with the intervals of 5000. For example in the first 5000 if i have the no's till 3000, my 1st row should have FromNo as 1 and ToNum as 3000. second row: if the data is not having till 10000 and the next no started as 12312(This is the 2nd Row FromNum) the ToNum value should be +5000 i.e 17312. Here also if we don't have the no's data till 17312 it need to consider the ToNum between the 12312 and 17312
Output should be as below.
FromNum ToNum
1 3205
1095806 1100805
1100808 1105806
1105822 1110820
Can you guys please help me with the solution for the above.
Thanks in advance.
What you may try in this situation is to group data and get the expected results:
DECLARE #interval int = 5
INSERT INTO FromTo (FromNum, ToNum)
SELECT MIN(Num) AS FromNum, MAX(Num) AS ToNum
FROM Numbers
GROUP BY (Num - 1) / #interval
when I run the following script:
tbl: update prob: 1?100 from tbl;
I was expecting that I get a new column created with each row having a random number. However, I get back a column containing the same number for all the rows in the table.
How do I resolve this? I need to update my existing table and not create a table from scratch.
When you are using 1?100 you are only requesting 1 random value within the range of 0-100. If you use 10?100, you will be returned a list of 10 random values between 0-100.
So to do this in an update you want to use something like this
tbl:([]time:5?.z.p;sym:5?`3;price:5?10f;qty:5?10)
time sym price qty
-----------------------------------------------
2012.02.19D18:34:27.148501760 gkn 8.376952 9
2008.07.29D20:23:13.601434560 odo 7.041609 3
2007.02.07D08:17:59.482332864 pbl 0.955069 9
2001.04.27D03:36:44.475531384 aph 1.127308 2
2010.03.03D03:35:55.253069888 mgi 0.7663449 6
update r:abs count[i]?0h from tbl
time sym price qty r
-----------------------------------------------------
2012.02.19D18:34:27.148501760 gkn 8.376952 9 23885
2008.07.29D20:23:13.601434560 odo 7.041609 3 19312
2007.02.07D08:17:59.482332864 pbl 0.955069 9 10372
2001.04.27D03:36:44.475531384 aph 1.127308 2 25281
2010.03.03D03:35:55.253069888 mgi 0.7663449 6 27503
Note that I am using type short and abs to return positive values.
You need to seed your initial data, using something like rand(time), otherwise it will use the same seed, and thus, give the same sequence of random numbers.
EDIT: Per https://code.kx.com/wiki/Reference/SystemCommands
Use \S?n, where n is any integer.
EDIT2: Check out https://code.kx.com/wiki/Reference/SystemCommands#.5CS_.5Bn.5D_-_random_seed for how to use random numbers, please.
Just generate as many random numbers as you have rows using count tbl:
First create your table tbl:
tbl:([]date:reverse .z.d-til 100;price:sums 100?1f)
date price
--------------------
2018.04.26 0.2426471
2018.04.27 0.6163571
2018.04.28 1.179559
..
Then add a column of random numbers between 0 and 100:
update rdn:(count tbl)?100 from tbl
date price rdn
------------------------
2018.04.26 0.2426471 25
2018.04.27 0.6163571 33
2018.04.28 1.179559 13
..
Please advice how to combine query, to find first occurrence of row
I have table
Date Counter
01.01.2005 208,5
02.01.2005 209,5 <----- start
03.01.2005 210,5
04.01.2005 211,5
08.01.2005 16,5
09.01.2005 17,2
10.01.2005 18,8 <------ correct
11.01.2005 19,7
12.01.2005 20,7
13.01.2005 21
14.01.2005 116,3
15.01.2005 120,4
16.01.2005 135,2
17.01.2005 1,1
18.01.2005 10,3
19.01.2005 18,7 <------ wrong
20.01.2005 14,2
21.01.2005 8,5
22.01.2005 7,1
and I need to extract Date by Counter 18.5 (from starting date 02.01.2005), since this value not in the table possible to take next higher value.
I tried to search by using starting date (because table have thousand dates and Counter between 0-499) and limit for value (grater or equal).
select top 1 Date from Tabel1 where Date > 02.01.2005 AND Counter >= 18.5
this query return wrong result - date 03.01.2005,
but correct must be 10.01.2005.
Hope for any assistance. Thanks in advance.
(I use: sql 2008 r).
You need to put an ORDER BY clause when using TOP. In this case you want to get the lowest Counter:
SELECT TOP 1 *
FROM tbl
WHERE
Date > CAST('20050102' AS DATE)
AND Counter >= 18.5
ORDER BY Counter
Note that without the ORDER BY, the result of TOP 1 is not guaranteed to always be the same.
I have a table with call logs. I need to assign time slots for next call based on which time slot the phone number was reachable in.
The relevant columns of the table are:
Phone Number | CallTimeStamp
CallTimeStamp is a datetime object.
I need to calculate the following:
Time Slot: From the TimeStamp, I need to calculate the count for each time slot (eg. 0800-1000, 1001-1200, etc.) for each phone number. Now, if the count is greater than 'n' for a particular time slot, then I need to assign that time slot to that number. Otherwise, I select a default time slot.
Weekday Slot: Same as above, but with weekdays.
Priority: Basically a count of how many times a number was reached
Here's I have gone about solving these issues:
Priority
To calculate the number of times a phone number is called is straight forward. If a number exists in the call log, I know that it was called. In that case, the following query will give me the call count for each number.
SELECT DISTINCT(PhoneNumber), COUNT(PhoneNumber) FROM tblCallLog
GROUP BY PhoneNumber
However, my problem is that I need to change the values in the field Count(PhoneNumber) based on the value in that column itself. How do I go about achieving this? (eg. If Count(PhoneNumber) gives me a value > 20, I need to change it to 5).
Time Slot / Weekday
This is where I'm completely stumped and am looking for the "database" way of doing things.
Unfortunately, I can't get out of my iterative process of thinking. For example, if I was aggregating for a certain phone number (say '123456') and in a certain time slot (say between 0800-1000 hrs), I can write a query like this:
DECLARE #T1Start time = '08:00:00.0000'
DECLARE #T2End time = '10:00:00.0000'
SELECT COUNT(CallTimeStamp) FROM tblCallLog
WHERE PhoneNumber = '123456' AND FORMAT(CallTimeStamp, 'hh:mm:ss') >= #T1Start AND FORMAT(CallTimeStamp, 'hh:mm:ss') < #T2End
Now, I could go through each and every Distinct Phone Number in the table, count the values for each time slot and then assign a slot value for the phone number. However, there has to be a way that does not involve me iterating through a database.
So, I am looking for suggestions on how to solve this.
Thanks
You can use DATEPART Function to get week day slot.
To calculate time slot you can try dividing number of minutes from beginning of day and dividing it by size of the time slot. It would return you slot number. You can use either CASE statement to translate it to proper string or look table where you can store slot descriptions.
SELECT
PhoneNumber
, DATEPART(WEEKDAY, l.CallTimeStamp) AS DayOfWeekSlot
, DATEDIFF(MINUTE, CONVERT(DATE, l.CallTimeStamp), l.CallTimeStamp) / 120 AS TwoHourSlot /*You can change number of minutes to get different slot size*/
, COUNT(*) AS Count
FROM tblCallLog l
GROUP BY PhoneNumber
, DATEPART(WEEKDAY, l.CallTimeStamp)
, DATEDIFF(MINUTE, CONVERT(DATE, l.CallTimeStamp), l.CallTimeStamp) / 120
You could try this to return the phone number, the day of the week and a 2 hour slot. If the volume of calls is greater than 20 the value is set to 5 (not sure why to 5?). The code for the 2 hour section is adapted from this question How to Round a Time in T-SQL where the value 2 in (24/2) is the number of hours in your time period.
SELECT
PhoneNumber
, DATENAME(weekday,CallTimeStamp) as [day]
, CONVERT(smalldatetime,ROUND(CAST(CallTimeStamp as float) * (24/2),0)/(24/2)) AS RoundedTime
, CASE WHEN COUNT(*) > 20 THEN 5 ELSE COUNT(*) END
FROM
tblCallLog
GROUP BY
PhoneNumber
, DATENAME(weekday,dateadd(s,start_ts,'01/01/1970'))