Is it possible to make a pivot table or join linked items IDs in one field?
For example I have 2 top level workitems (let their ids are: 100 and 200) with there childs (101,102,103 and 201,202):
100
-101
-102
-103
200
-201
-202
I want to create some query that return me something like this:
100 - 101,102,103
200 - 201,202
or at least:
101 - 100
102 - 100
103 - 100
201 - 200
202 - 200
There is no way inside Azure DevOps / TFS to do this.
However, you could use a tree query inside TFS and the TFS-Excel plugin. The default output looks like this:
Title 2 is the child of the predescessing Title 1. Same with Title 3. By using some formulas, it should be possible to create a propper table.
Related
I'm attempting to join two tables in Data Studio. My data sources are Google Ads and Microsoft ads. I'd like to end up with a table that looks like the following example:
Campaign
Clicks
Campaign 1
500
Campaign 2
700
The clicks from each table is added together to give a total.
When I attempt to join both tables, I get a result that looks like this (full example here):
Campaign
Clicks (Table 1)
Clicks (Table 2)
Campaign 1
100
400
Campaign 2
200
500
The data appears to be joined by 'campaign' but the 'clicks' are not being consolidated into one column, instead the clicks data from both tables are separate.
I've already attempted to solve this issue by:
Creating calculated fields in the newly blended data (Clicks Table 1+ Clicks Table 2) but this yields strange results when trying to aggregate other metrics.
Join using 'Clicks', however, this doesn't work as the number of clicks for each campaign is always likely to be different for each data source.
Change the join type from 'Left outer' to right outer, inner, full outer and cross but none of these appear to work either.
Grouping campaigns by a 'Campaign Group' calculated field using a CASE statement but this doesn't appear to work either- this generally results in only one set of data to show at a time (possibly whichever loads quickest).
Here's how my blend is setup. You can attempt to reproduce this issue using this page.
What is the best way to join both tables and have the metrics (like clicks) properly aggregated?
The values in the two separate fields, Clicks (Table 1) and Clicks (Table 2) can be consolidated using the calculated field:
Clicks (Table 1) + Clicks (Table 2)
This will work as long as there are no NULL values in either (or both) tables in the blend, for any given row of data.
This is because 1 + NULL = NULL (where 1 is used as an example to represent a number) as NULL is not a numeric literal (it's not a number, thus cannot be calculated)
Since this blend has NULL values, one approach is to use the IFNULL function ("returns a result if the input is null, otherwise, returns the input") below, which treats NULL values as a numeric literal (in this case, 0), so that the values can be calculated:
IFNULL(Clicks (Table 1), 0) + IFNULL(Clicks (Table 2), 0)
This will ensure that calculations are changed:
1 + NULL = NULL is replaced by 1 + 0 = 1
NULL + NULL = NULL is replaced by 0 + 0 = 0
Editable Google Data Studio Report (Embedded Google Sheets Data Source) and a GIF to elaborate:
How can I get unique values from column in the table? For example, I have this Products table:
user_id number
1 900
1 400
2 100
2 300
3 200
Here I used....
like so
Post.order(number: :desc).limit(3).each do |p| > I got here
user_id number
1 900
1 400
2 300
like so
Here I want "user_id" not to overlap. like this
f
user_id number
1 900
2 300
3 200
As deepak adviced, you might use distinct.
However, I guess you need to get maximum value from all records with the same user_id? Then you need to use sql to group values by user_id and selecting max from it. In Rails that might be like this. I can't tell you that it will work for sure because don't remember the output, believe it's array of hashes, it might throw the error that you're not using some other field:
Post.group(:user_id).max(:value)
it's SQL equalent:
SELECT user_id, MAX(value) FROM posts GROUP BY user_id
I am building an ms access db to manage part numbers of mixtures. It’s pretty much a bill of materials. I have a table, tblMixtures that references itself in the PreMixture field. I set this up so that a mixture can be a pre-mixture in another mixture, which can in turn be a pre-mixture in another mixture, etc. Each PartNumber in tblMixture is related to many Components in tblMixtureComponents by the PartNumber. The Components and their associated data is stored in tblComponentData. I have put in example data in the tables below.
tblMixtures
PartNumber
Description
PreMixtures
1
Mixture 1
4, 5
2
Mixture 2
4, 6
3
Mixture 3
4
Mixture 4
3
5
Mixture 5
6
Mixture 6
tblMixtureComponents
ID
PartNumber
Component
Concentration
1
1
A
20%
2
1
B
40%
3
1
C
40%
4
2
A
40%
5
2
B
30%
6
2
D
30%
tblComponentData
ID
Name
Density
Category
1
A
1.5
O
2
B
2
F
3
C
2.5
I
4
D
1
F
I have built the queries needed to pull the information together for the final mixture and even display the details of the pre-mixtures and components used for each mixture. However, with literally tens of thousands of part numbers, there can be a lot of overlap in pre-mixtures used for mixtures. In other words, Mixture 4 can be used as a pre-mixture for Mixture 1 and Mixture 2 and a lot more. I want to build a query that will identify all possible mixtures that can be used as a pre-mixture in a selected mixture. So I want a list of all the mixtures that have the same components or subset of components as the selected mixtures. The pre-mixture doesn’t have to have all the components in the mixture, but it can’t have any components that are not in the mixture.
If you haven't solved it yet...
The PreMixtures column storing a collection of data is a sign that you need to "Normalize" your database design a little more. If you are going to be getting premixture data from a query then you do not need to store this as table data. If you did, you would be forced to update the premix data every time your mixtures or components changed.
Also we need to adress that tblMixtures doesn't have an id field. Consider the following table changes:
tblMixture:
id
description
1
Mixture 1
2
Mixture 2
3
Mixture 3
tblMixtureComponent:
id
mixtureId
componentId
1
1
A
2
1
B
3
1
C
4
2
A
5
2
B
6
2
D
7
3
A
8
4
B
I personally like to use column naming that exposes primary to foreign key relationships. tblMixtures.id is clearly related to tblMixtureComponenets.mixtureId. I am lazy so i would also probably abreviate everything too.
Now as far as the query, first lets get the components of mixture 1:
SELECT tblMixtureComponent.mixtureId, tblMixtureComponent.componentId
FROM tblMixtureComponent
WHERE tblMixtureComponent.mixtureId = 1
Should return:
mixtureId
componentId
1
A
1
B
1
C
We could change the WHERE clause to the id of any mixture we wanted. Next we need to get all the mixture ids with bad components. So we will build a join to compare around the last query:
SELECT tblMixtureComponent.mixtureId
FROM tblMixtureComponenet LEFT JOIN
(SELECT tblMixtureComponent.mixtureId,
tblMixtureComponent.componentId
FROM tblMixtureComponent
WHERE tblMixtureComponent.mixtureId = 1) AS GoodComp
ON tblMixtures.componentId = GoodComp.componentId
WHERE GoodComp.componentId Is Null
Should return:
mixtureId
2
Great so now we have ids of all the mixtures we don't want. Lets add another join to get the inverse:
SELECT tblMixture.id
FROM tblMix LEFT JOIN
(SELECT tblMixtureComponent.mixtureId
FROM tblMixtureComponenet LEFT JOIN
(SELECT tblMixtureComponent.mixtureId,
tblMixtureComponent.componentId
FROM tblMixtureComponent
WHERE tblMixtureComponent.mixtureId = 1) AS GoodComp
ON tblMixtures.componentId = GoodComp.componentId
WHERE GoodComp.componentId Is Null) AS BadMix
ON tblMixtures.id = BadMix.mixtureId
WHERE BadMix.mixtureId = Null AND tblMixture.id <> 1
Should return:
mixtureId
3
4
Whats left is all of the ids of that have similar components but not nonsimilar components to mixture 1.
Sorry i did this on a phone...
I have a database (*.mdb), scheme of connection, that I use in my program:
TADOConnection -> TADOTable
DB has a table named Table1, which is connected by ADOTable. In Table1 there are fields A, B, C - floating point values. I need to sort the table by sums of these numbers.
For example:
Name A B C
------ --- --- ---
John 1 2 5
Nick 1 5 3
Qwert 1 5 2
Yuiop 2 3 1
I need to sort them, so the name, which A+B+C is bigger, would be first.
Sorted variant:
Name A B C
------ --- --- ---
Nick 1 5 3
John 1 2 5
Qwert 1 5 2
Yuiop 2 3 1
How to do this ?
While writing this, I understood what to do: I need a calculated field in the table, which is equal to A+B+C, and I must sort the table using it.
I do not have MS Access but with other Data Base Systems, I would use SQL to achieve this:
There are several SO answers along these lines for MS Access (try Microsoft Access - grand total adding multiple fields together)
So start with something like this:
Select Name, (A+B+C) as total, A, B, C
from table1
order by total desc
I have a simple problem which gave em a headache
I need to sort integers in a Database table TDBGrid ( its ABS database from component ace ) with the following order
0
1
11
111
121
2
21
211
22
221
and so on
which means every number starting with 1 should be under 1
1
11
111
5
55
can anyone help me?
thanks
This should work to get stuff in the right order:
Convert the original number to a string;
Right-pad with zeroes until you have a string of 3 characters wide;
(optional) Convert back to integer.
Then sorting should always work the way you want. Probably it's best to let the database do that for you. In MySQL you'd do something like this:
select RPAD(orderid,3,'0') as TheOrder
from MyTable
order by 1
I just ran this in SQL Server Management Studio - note I mixed up the rows in the input so they were not in sorted order:
create table #temp( ID Char(3));
insert into #temp (ID)
select '111' union
select '221';
select '0' union
select '21' union
select '1' union
select '11' union
select '211' union
select '121' union
select '2' union
select '22' union
select * from #temp order by ID;
I got the following output:
ID
----
0
1
11
111
121
2
21
211
22
221
(10 row(s) affected)
If you're getting different results, you're doing something wrong. However, it's hard to say what because you didn't post anything about how you're retrieving the data from the database.
Edit: Some clarification by the poster indicates that the display is in a TDBGrid attached to a table using Component Ace ABS Database. If that indeed is the case, then the answer is to create an index on the indicated column, and then set the table's IndexName property to use that index.
select cast(INT_FIELD as varchar(9)) as I
from TABxxx
order by 1