I've a problem with the dashboard in Tableau. In the dashboard there are many worksheets, and all the columns that are in the report are calculable. The problem is that dashboard is being formed for a very long time. The report contains approximately 2 million rows. And it is generated about 5 minutes.
Tell me, what are the solutions in this case?
Maybe I can somehow adjust the page display and not all the records at once?
To reduce the calculation time, try to exclude data you don't need with a data source filter in tableau. You can also hide or delete unused calculated fields. Other things you can do is reduce sheets that are not used.
Here's a link: https://www.tableau.com/about/blog/2016/1/5-tips-make-your-dashboards-more-performant-48574
Steps to follow to reduce calculation time:
Extract the data and use Extract data and also keep option as extract instead of live.Also replace the data source using extract data.
Use "User Filter" to reduce calculation time so that tableau will display of particular user data only.
I hope this will work to solve your problems.
I have one more idea to resolve this issue.
1)when you loan first time your dashboard put into Dashboard Action Filter
First Time load dashboard data exclude in your sheet.
Dashboard Menu->Action->add action->select sheet and exclude option.
2) Live to Extract data source and select radio button extract.
3)use user filter.
I am following the other answers (use extract, dashboard action filter...) and I want to add one point:
Drag every field used by any tablesheet on the dashboard on "Detail" of every tablesheet you are using on the Dashboard. Now Tableau loads all needed data while loading the first tablesheet and can use this data for the other sheets.
i.e. A dashboard contains three tablesheets (A, B, C) now you drag every field used by A on "Deatil" of B and C, every field used by B on "Deatil" of A and C, every field used by C on "Deatil" of B and A.
We are also having a similar issue with 150 million rows but I want to check if you are doing following steps. This may help you. This goes back to fundamentals of Tableau reporting.
1/ Try to make sure your data set is in star schema format. This will help a lot in report.
2/ Try to have tables and views in DB in such a way that same columns are used in Tableau. Any extra columns in tables adds to the performance issue.
3/Make sure indexing is done properly for all the fields that are joined.
4/ In my experience Dashboard adds extra performance lag. So make sure you try to get as much performance tuning on sheets as possible before even going to dashboard.
5/ If required try to use materialized views.
hope this helps.
Try to capture performance metrics using performance recorder option in Tableau.
Check for the underlying DB tables and joins present on the data source layer.
Try using optimized sets and parameters as required and get rid of less relevant filters.
Try using data extracts with scheduled refresh with data source filter for limited business years data.
Related
I'm using Grafana v9.1.8.
I created a panel bases on data from influxdb.
The data only sent when application is working, so sometimes there is no data.
And the dashboard will show just 'No Data' in the middile of the panel without any graph.
I'm trying to keep the graph(axis) shown even if there's no data, but I cannot find the solution.
As far as I know, there is no such feature on Grafana at the moment, but I found this solution:
https://community.grafana.com/t/what-to-show-when-the-panel-is-without-data/66524/9
Make a fake union, check if you have any data and if you don't create some random time data without other parameters. As they say in the answer, this may not be scalable, as you need to add extra lines for each query, but it may be a workaround.
I have a report on PowerBI that has many pages/tabs and each one also has alot of data being displayed. As I didn't design this, I'm going through the report to eliminate as much as I can and possibly splitting the report as alot of the data only requries refreshing once a week.
This is where my query comes in, I have information on one page that requires a refresh every two hours over a 12 hour duration, one field of data that requires a daily refresh and two more fields only require refreshing when required.
Is it possible to segment scheduled refreshes throughout a single part of the report, or does scheduled refresh only allow the entire report to be refreshed? (I.E. Sales status is hourly, Outbound status is daily, and sales summary is weekly)
I'd rather avoid having to split reports, as it is very handy to have them on one page; rather than having to open two and view them on multiple monitors.
I am just starting out on PowerBI reports, having been shown enough to get what I need done; but plan to delve further in, this being my first port of call if it is possible.
Thanks for any reponses in advance.
Brian.
No. It's Not Possible.
PowerBI Internal working like Tabular Model.
In Import mode we can not do incremental refresh also.
So other option is you can create Reporting layer and define denormilized with calucaluated columns Reporting tables.( Sales ,summary )
and use Direct query or Refresh and Do ETL for This table.
So you can schedule ETL for specific Tables i.e.Sales or summary.
I have Access 2010. I was wondering if there is a way to get the form to load different for every selection.
Example
Item A has 10 Rows and 6 columns of filled in data
Item B has 3 Rows and 2 Columns of filled in data
Both are from the same table.
Is there a way when a certain item is selected from a drop down menu to load, without having multiple forms, only the filled in data? Output would resemble Excel format.
Thank you in advance for any help.
Quick Answer (TL;DR)
Creating dynamically-generated form structure in MSFT Access can be done with sub-forms.
Detailed Answer
Context
MSFT Access
Creating forms
Problem
Scenario: Developer wishes to create context-specific form structure that depends on the query output.
Solution
Create one or more sub-form with attached VBA that changes dependent on the query ouput.
Connect the subform(s) to the primary form and load as needed depending on the context.
See also
https://stackoverflow.com/questions/tagged/ms-access+forms+vba
https://duckduckgo.com/?q=msft+access+dynamic+subform
How to dynamically load, access and unload subforms in microsoft access
I'm using Access 2010 and I would like to create a form where useres can enter data much like they can in an Excel format. The users need to enter a date when a step is complete for a specific unit.
In Excel the units run aross the top row, the steps run down the left column. In the cell where the unit and step meet, you put a date when it is done. In Access it is much harder to create a form that looks like this (at least it has been for me so far). I tried to use a crosstab query, but you cannot enter information into a crosstab query. I can do a massive form listing every combination of units and steps, but there are over 50 units and each one has 63 steps. I don't want users to have to look through a form with over 3,000 lines in it just to enter a date completed.
This definitely feels like something we should be using a database for instead of an Excel spreadsheet. I have the format for the back end tables to hold the data. My problem is how to create a form that is easy for the user to enter the dates.
I think you have three options. First, you could build the form from scratch, which you've already admitted would suck. And it would take a lot of VBA to get the data in the right place. Second, you could automate Excel - it's the same as the first method but you don't have to build the form. You would populate an Excel spreadsheet and write the changes back to the database. This is not a trivial task and I don't recommend it.
The third option is to throw away the idea that you want to do this in a grid. You've probably been doing it in Excel and to the extent that you replicate that, your users will be happy and comfortable. Moving to a database gives you benefits, but there are costs. This is one of the costs.
So create a form with a dropdown containing all of the units. When a unit is selected, populate a subform (datasheet view) listing all of the procedures and dates. The user can then select the unit, and fill in the date next to whichever procedures he wants. Then he can select another unit and do the same thing. If you set it up right, your data will flow to the tables automatically and you'll get all the benefits of data validation, input masks, relationships, and whatever else you're using at the table level.
I know that's not what you were looking for, but I think it's the best way forward.
I have to create a report where main thing is a list of items. On the first page there is also supposed to be a bunch of tables that show figures counted from the list (things like amounts of different types of items etc).
Here is an example to demonstrate the idea. List of the items is actually quite long and goes for multiple pages. Other statistics will be listed only on the front page.
(..edit: seems I can't post images yet..)
I have a database query that retrieves the data for the item list. The question is: Is there a way to use this single query to form all the needed statistics?
All the statistics are such that they can be formed with for example using jaspers groups and variables. I also know how to achieve the desired result by using a subreport for each table (and then I'd even be able tailor the query for each table to directly result the wanted values) but I would like to avoid running the same (or almost same) query for multiple times.
Try to put your table component into the SUMMARY band because detail band repeats the record for every row in dataset.
See this