I have two questions:
I have two tables, table1 and table2. I need to design an application in such a way that a selected row of table 1 when clicked should get displayed in table 2.
How do I call a custom table? Suppose I have a class Table with empty constructor and I will pass arguments like Table(pagination). It has to show the table with pagination,
Similarly, Table(lazyloading) has to show lazy loading table. Table(pagination, Lazy loading,search) must show all three properties.
What you have to do for nr 1 is that you attach a Clicklistener to your table1 and on a Clickevent you take the selected Object ni table1 and add it to table2. Also add an if to not add rows that already exist in table 2.
This is how you copy data
public void copydata(){
Object o = table1.getValue();
if(!table2.getItemIds().contains(o))
table2.addItem(o);
table2.setContainerDataSource(table2.getContainerDataSource());
}
When it comes to your second question I have no clue what you are talking about, but I looks like you want to extend the Table class in vaadin to get your own features.
Related
I am stuck while dynamically forming a new column based certain WHERE clause from another Table in PowerBi. To give more details, let's say I have a table with item numbers associated with a Customer Name. In another table, I have to add a new column, which will dynamically add the item numbers associated with a particular customer and append as a query parameter to a base url.
So, my first table looks like this:
The second table that I want is this:
The query parameter value in the URL, has to be dynamically based on a SELECT query with a WHERE clause and pick up the ItemNumbers using the Customer field which is common between both. So, how can this be done in PowerBi? Any help would be really appreciated :)
I have one table in my model "TableRol" if I want to summarize my Date as the string I can use CONCATENATEX;
URL = CONCATENATE(CONCATENATE("http:\\mysite.com\parametersHere\getitem?='",CONCATENATEX(VALUES('TableRol'[Date]), 'TableRol'[Date],";")),"'")
I have 40 tables. One table has 20 rows, and one of the columns have 1385 distinct values.
I would like to use this in a relationship with another table.
TableName(1385 rows) Column:Name:(1385 distinct values)
But when I try to do this in Powerbi/Manage-Relations, it will only accept the option "Many-to-Many" relationship. It reports that none of the column are "Unique".
Well, the data in the column is unique. So how can I configure this column to be unique so I can use it in a "One-to-Many" relationship"?
Do I have to edit the DAX expression and put the "DISTINCT" keyword in the expression for that column? And How?
Now I have:
}, {"Columnname", Int64.Type}, {
what you can try is to perform remove duplicates in that table(i know its already contains distinct values but you can give it a try)... and/or just load the data again.
Best way would be when you group your data in the query editor. This way your table has only distinct values and you can create your relationship.
In the query designer under Home > Group By you can group after your column.
Example
Table:
Table (2):
Relationship (One to Many):
Result:
I hope this helps.
I have my data source something like below.
I need to show output in the report as below.
I tried using the unpivot column and getting something like this, how to count the occurrence value of each Business value.
Plot following mesure against Value column (from your unpivot table):
Business Occurance = COUNTROWS('your unpivot table')
We have to remove the Attribute column as the next step to Unpivot. Then my table should be looks like this.
Now create a new table with following Dax function, let's say the current table as Business Data (Your Unpivot table)
Occurrence Table = DISTINCT('Business Data')
Now end result table should look like this,
You can make use of this table for your table visual in the report.
Note: You can add n-number of rows and column into your source table and this logic will do magic to get the correct result.
I have marked two places first marked place you have to add Value column then click second marked place one dropdown value is open click count menu
I have an original table named Error, and two additional tables (ErrorBefore and ErrorAfter) derived from the original (e.g. ErrorAfter = ALLSELECTED('Error')). I want to compare values from a 'before' version with an 'after' version, with the different version picked by slicer with 'Single select' on. That's working okay. Now I want to perform a full-outer join on the two results, joining on the Message column. The image below shows the result I have so far, with a fabricated table at the bottom of what I'm trying to achieve. I've tried using NATURALLEFTOUTERJOIN and GENERATE but they either don't give the result that I seek. Does anyone know how to perform the join?
PBIX share here.
First, change your data model to this:
I removed all your derived tables and relations, and instead created 2 tables like this:
Version Before = DISTINCT('Error'[Version])
Version After = DISTINCT('Error'[Version])
Both tables should have no relations with the Error table.
Then, create a measure:
Message Count = COUNT('Error'[Message])
You should always create measures yourself, never use Power BI auto-aggregations.
Next, create a measure for "Before" count"
Message Count Before =
VAR Version_Before = SELECTEDVALUE('Version Before'[Version])
RETURN
CALCULATE([Message Count], 'Error'[Version] = Version_Before)
and, similarly:
Message Count After =
VAR Version_After = SELECTEDVALUE('Version After'[Version])
RETURN
CALCULATE([Message Count], 'Error'[Version] = Version_After)
Finally, adjust your visuals:
Slicer "Before" should be based on table "Version Before"
Slicer "After" should be based on table "Version After"
Charts and tables should use "Message Count Before" and "Message Count After" measures in values
Add another table with messages and both measures
Result:
I have two tables I would like to call, but I am not sure if it is possible to combine them into one query or I have to some how call 2 different queries.
Basically I have 2 tables:
1) item_table: name/id etc. + category ID
2) category_table: categoryID, categoryName, categoryParentID.
The parent categories are also inside the same table with their own name.
I would like to call on my details from item_table, as well as getting the name of the category, as well as the NAME of the parent category.
I know how to get the item_table data, plus the categoryName through an INNER JOIN. But can I use the same query to get the categoryParent's name?
If not, what would be the mist efficient way to do it? The rest of the code is in C++.
SELECT item_table.item_name, c1.name AS CatName, c2.name AS ParentCatName
FROM item_table join category_table c1 on item_table.categoryID=c1.categoryID
LEFT OUTER JOIN category_table c2 ON c2.categoryID = c1.categoryParentID
SQL Fiddle: here