I made few changes in the query editor. But when I close and apply the changes. I get the error Model object names must be non empty. I tried deleting the last changes I made in query editor. The error still exists.
In Power Bi, this error is saying you have empty columns in your data set. You have to delete that columns and refresh the document and it should work.
#HuaGong is correct. Most likely one or more columns are loaded without a name.
This says that you have left one Column heading blank.
Delete the column or give a name to the column.
This happens when you enable "Use First Row as a header" and there are null values in the first row.
This can also happen if the Excel (other source document you are using) is open on your desktop. You have to close the document and then try again.
Related
I copied an old Power BI Report and gave it a new source. The new source has the same columns but updated data.
The Map of the USA on the NEW PBI report I made does not change the values by state, it gives it to max value, i.e. all the states say 4,100 instead of different number.
The filters all match, what else should I check?
If you "replace" a query by another one with the same name, the data model will be broken. What you need to do is "edit" an existing query and "paste in" the new code. You can do that by opening both queries in the PQ Advanced Editor. Of cause the new code has to result in the same column structure.
I am rather new at PowerBI because I have mostly used other tools but I need to use them for a customer. I have this problem that I haven't been able to solve.
I have created two CSV-files using python and I save them in a specific location. I update these files every day and I have since their first creation date never changed anything. The files are ";" separated.
Now, I created a dashboard in PowerBI by first importing these files and connecting them using a common key. All the visuals work just fine. The next day, I wanted to update the data since the CSV-files on my disc had been updated with my python code.
The problem is that PowerBI will not update the tables. In fact I get the error "Det gick inte att hitta kolumnen <namn på kolumnen> i tabellen" which in english would be Column cannot be found in table. The column is the first column in the PWBI table (since the application ordered these columns in alphabetical order).
I have tried every possible thing, from the cleansing cache memory to change the order of columns. Whatever I try fails.
In this image above it says: "Cannot find column BKVehicelID in the table" and the second error is "Update was blocked because of errors in other queries". I can, however, update the second column by itself.
I would really appreciate any help on this.
so, I got 3 xlsx full of data already treated, so I pretty much just got to display the data using the graphs. The problem seems to be, that Powerbi aggregates all numeric data (using: count, sum, etc.) In their community they suggest to create new measures, the thing is, in that case I HAVE TO CREATE A LOT OF MEASURES...Also, I tried to convert the data to text and even so, Powerbi counts it!!!
any help, pls?
There are several ways to tackle this:
When you pull a field into the field well for a visualisation, you can click the drop down in the field well and select "Don't summarize"
in the data model, select the column and on the ribbon select "don't summarize" as the summarization option in the Properties group.
The screenshot shows the field well option on the left and the data model options on the right, one for a numeric and one for a text field.
And, yes, you never want to use the implicit measures, i.e. the automatic calculations that Power BI creates. If you want to keep on top of what is being calculated, create your own measures, and yes, there will be many.
Edit: If by "aggregating" you are referring to the fact that text values will be grouped in a table (you don't see any duplicates), then you need to add a column with unique values to the table so all the duplicates of the text values show up. This can be done in the data source by adding an Index column, then using that Index column in the table and setting it to a very narrow with to make it invisible.
An arbitrary behavior in Toad that annoys me when composing my queries.
It is not a problem really, rather than an annoying issue.
If you describe any table in toad, or clicked on the table name from the Schema Browser, in Columns tab, copy and paste a column
Sometimes you get the column name only, and sometimes you get the column name with the details of the column {name length data type...etc}
When does toad coy the column name alone, and when does it copy the entire column description?
I searched many SO questions for something related, and google trying to understand how to copy only column name, but I didn'y find any reference at all related tho this.
While in Schema Browser,
select any table and
navigate to "Columns" tab (that's what you're doing anyway).
Right-click, a menu should open.
It contains the Row select item. If it is checked, when copy/pasting a column, you'll actually copy the whole row.
Therefore, uncheck it.
Make sure you click on a column name when copy/pasting it; otherwise, you'll copy a column value you clicked on (such as Data Type or Null).
i have created Power bi project, It is working fine in the beginning but when i refresh my datasource , i get this error " not allowed for columns on the one side of a many-to-one relationship" . Any can help me ??
I resolved this issue by going into the relationship, right clicking to view properties,
and making it a Many to One Relationship.
Power BI sometimes automatically creates relationships between the queries that are being used to drive the data in the reports. When I have encountered this error or errors like it in the past I:
Go into Manage Relationships
Verify that there is a relationship listed
Evaluate the From and To relationships that are listed as active
Delete any invalid From and To relationships between separate data sets
My most common issue in the past has been that I will have two very different queries pulling data from separate sources with similar column names and Power BI will generate a relationship between them that is invalid. After removing the relationship it has always resolved my issue.
In my case issue was related to the fact that Power BI was threating "SQL View" as a "Table" and as a result it was creating relations for it.
Although I've checked the "Manage Relationships":
and removed one relation which was not reasonable the issue was still persisting.
Then issue solved when I had looked in the "Relations"
tab and found unreasonable relations related to my View and removed them.
None of these answers helped me. For me I received this error when trying to refresh my dataset which had previously worked for some time. After investigating I found the schema of the source database had changed. Two fields that previously didn't allow nulls now allowed nulls and had null values for some rows. My Power BI model still expected these fields not to contain nulls but was throwing this same and very misleading error:
Data source error: Column 'x' in Table 'y' contains blank values and this is not allowed for columns on the one side of a many-to-one relationship or for columns that are used as the primary key of a table. Table: y.
Initially on seeing this error and opening up my report in PowerBI Desktop and going to Modeling > Manage relationships. I looked for a relationship on table y for column x, but no such relationship existed!? Was I confused? You bet.
After investigating further I discovered the database schema change and resolved by updating my Power BI model by going to the data model editor, expanding table y in the Fields panel on the right hand side, selected field x, expanded "Advanced" in the Properties panel and changed "Is nullable" from No to Yes. I then applied the changes, saved the report and refreshed the dataset.
I followed these steps
Step 1: Go to the Model section from the left side of the Power BI Desktop
Step 2: Delete all the relationships (or connections) amongst the tables that have been created by Power BI itself while you were working with the Power Query Editor
Step 3: Click 'Refresh visual and data' option in Home (besides the Transform Data button)
It worked and loaded the new data and also applied the automations done in the query editor.
I got this error on a completely new table made in Power Query, weird since I had no chance to create a relation yet.
Easy fix: Apply a filter that removes all blanks on that column - apply the filter, and then delete this new filter again
Another problem you might have is that "Autodetect new relationships" is turned on:
This is a setting that disables auto-detecting relations under "File/Options & settings/Options/Current File/Data Load/Relationship/Autodetect new relationships after data is loaded"
I had the same issue, after spending hours of searching for a fix and not finding anything, I started scratching around and found the problem took 1second to fix. My issue specifically, was a an additional relationship created within the model. The connection showed up as a "dotted" line one of my tables. I deleted the relationship, refreshed. Done.
This happens when your table or connected tables in excel, contain blank row, for resolving this issue you will need to click anywhere in the excel table, then click on the table tools, then resize table and Select the entire range of cells to include all rows, make sure no blank rows are included then save and get back to your PowerBI then again refresh it, all will work.