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Power BI Publish to Web for Anonymous Access is Here

Earlier this week on Wednesday the Microsoft Power BI made an incredibly exciting announcement and released Power BI “publish to web” as a preview feature. This is HUUUUGE news! This was probably the top requested feature and its finally here thanks to the hard work and dedication of the Microsoft Power BI team!

Read Getting Started with R Visuals in Power BI

Power BI “publish to web” allows you to easily expose a Power BI report to the world through an iframe that can be embedded wherever you like.

To publish your Power BI report to the web, log into your Power BI site.

Find the report that you want to share and click File in the top left.
Power BI publish to web

You’ll see a message pop up box similar to below. Click the yellow button to create the embed code.
Power BI publish to web preview

This is where you’ll see a very important warning!
WARNING: Reports that you expose through the “publish to web” feature will be visible to everyone on the internet! This means NO AUTHENTICATION is required to view the report that is embedded in your application.
warning 2

Once you do that, you’ll receive an embed code that you can then use to expose your Power BI report within your blog as seen below!

https://msit.powerbi.com/view?r=eyJrIjoiYTNjNzcwNjctNTczMy00ZDMxLWFlMGUtMDViODA1NGZiNmI0IiwidCI6IjcyZjk4OGJmLTg2ZjEtNDFhZi05MWFiLTJkN2NkMDExZGI0NyIsImMiOjV9

As you can see the report maintains all the interactivity features of Power BI. And as your Power BI report updates and changes, those changes will be reflected in your embedded Power BI reports!

Pretty awesome!

Additional Resources

Read the Power BI “publish to web” announcement here.

Read the Power BI “publish to web” documentation here.

Feedback

Let me know what you think of this feature or if you have any questions. Leave a comment down below.


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MDX NON EMPTY KEYWORD VS NONEMPTY FUNCTION

Non Empty vs NonEmpty

Hey everyone, in this blog I want to address a very common MDX Question. What is the difference between the NON EMPTY keyword and NONEMPTY function? To take it a step further which one should you use?

Non Empty keyword VS NONEMPTY Function.

The big difference between the NON EMPTY keyword and the NONEMPTY function is when the evaluation occurs in the MDX. The NON EMPTY keyword is the last thing that is evaluated, in other words after all axes have been evaluated then the NON EMPTY keyword is executed to remove any empty space from the final result set. The NONEMPTY function is evaluated when the specific axis is evaluated.

Should I use NON EMPTY keyword or NONEMPTY function?

Ok Mitchell, so you told me when each of these are evaluated but really you haven’t told me anything up until this point. Can you tell me which one I should use already? Well, unfortunately, it depends. Let’s walk through an example of each using the BOTTOMCOUNT function.

BOTTOMCOUNT FUNCTION with NON EMPTY Keyword

In this example I’m returning the bottom ten selling products for internet sales. Notice that I have returned all products that have no internet sales, this is not necessarily a bad thing, maybe you want to return products that don’t have sales.

image

However if you don’t want to return these products then we can try using the NON EMPTY keyword. In the below example you can see the results when I add NON EMPTY to the ROWS axis.

image

WHOOOAAA, what happened?? A lot of people would have expected the results here to show the bottom ten products that DID have sales. However, that is not the case, remember that I said the NON EMPTY keyword is evaluated LAST after all axes have been evaluated. This means that first the bottom ten selling products which have $0 in sales are first returned and then the NON EMPTY keyword removes all that empty space from the final result.

BOTTOMCOUNT function with NONEMPTY function.

So let’s try this again, if you want to return the bottom ten products that had sales then we must first remove the empty space before using the BottomCount function. Take a look at the code below:

image

In this code we first remove the empty space before using the BOTTOMCOUNT function. The result is we return the bottom ten products that had internet sales. Once again neither one is right or wrong here it just depends on what you want in your final result.

NON EMPTY Keyword vs. NONEMPTY Function – Performance

There is a very common misconception that the NONEM

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SQL Internals Reading Data Records Part 3: Fixed Length Columns

  • 29 June 2012
  • Author: BradleyBall
  • Number of views: 4042
  • 0 Comments
http://www.flickr.com/photos/13785455@N05/2709041496/

Hello Dear Reader and welcome back to part 3 of our ongoing series on how to Read a Data Record. 

It is Friday just before the weekend, and now we are getting to the part of the record that means a great deal to us. 

Not that the Tag Bytes and Null Bitmap offset weren’t important but now we are finally out of the meta data and into OUR DATA.  The data that we as DBA’s store or that our users store.

So I’ll dispense with the turn of the phrase and dive directly into our data.

 

FIXED LENGTH COLUMNS

First let’s update our chart so we know what part of the Data Record we are tackling.  Once again these images come by way of Paul Randal (@PaulRandal | Blog) and the MCM Video series on Data Structures and the good people from Microsoft.

 

Our Fixed Length Columns are any data type that always uses the defined amount of space.  They are BIGINT, INT, FLOAT, DECIMAL, MONEY, CHAR, NCHAR, BIT, SMALLMONEY, MONEY, REAL, DATETIME, DATETIME2, DATETIMEOFFSET, and BINARY.  As mentioned these fields will use 100% of the space assigned to them regardless of the length of the data stored within them.  For example if I define a CHAR(500) and we insert ‘Some Product’, which is 12 characters long 1 byte per character means 12 bytes for storage, we will have 488 bytes of left over space.  If we have an Integer it always uses 4 bytes even if the number only needs 1 byte of space.  Before I break down into a Compression blog let’s just go straight into our record.

 

The scripts we’ve been using from our previous blogs created a fixed length record that was 1504 bytes which is a little much to put on a page, but the second table we created yesterday that had just two fields and took up  9 bytes would work out well.  So here’s the code if you need it.

 

CREATE TABLE fixedRecord
	( 
         myID INT
        ,mychar CHAR(5)
       )
GO
INSERT INTO dbo.fixedRecord(myid, mychar)
VALUES(1, 'X')
GO

 

Don’t forget we’ll use DBCC IND to get our page number.

 

DBCC IND(demoInternals, 'fixedRecord', 1)
GO

 

Then we’ll set Trace Flag 3604 on and use DBCC PAGE to look at the output.

 

DBCC TRACEON(3604)
GO
DBCC PAGE('demoInternals', 1, 282, 3)
GO

 

Here is the output greatly paired down just to what is relevant to us. 

0000000000000000:   10000d00 01000000 58202020 20020000           ........X    ...

 

The record we inserted was (1,X) our 1 will be highlighted in red and our X in orange.  We need to remember that each section of code grouped together in groups of two hexadecimal digits in 4 byte segments.  So that means everything in red makes up a perfect 4 byte segment because it is and INT data type, our CHAR(5) takes up all of one segment and two digits, a hexadecimal pair, in orange. 

 

Now that we have them grouped we can start translating them.  The trailing 0’s in 01000000 represent the empty unused space in the Integer field.  Our value 01 translates to 0x01 which equals 1, if you want you can convert it to validate  http://easycalculation.com/hex-converter.php.  Our next record will be a little more interesting 58202020 20.  The first part that we are interested in if 58, we’ll use our converter tool to convert that from Hex to binary, 01011000.  Our next step is to find out what the binary value actually translates to in text.  For that we’ll use another conversion tool http://www.roubaixinteractive.com/PlayGround/Binary_Conversion/Binary_To_Text.asp, just plug in 010110000 and we see that it is binary for the letter X.

 

“So Balls”,  you say, “What are all the 202020’s for then?”

 

Dear Reader your keen powers of perception never fail to amaze me!  The 202020 20’s are the white space left over in the CHAR(5) field.  Remember we only need 1 byte worth of space for our letter X, but our CHAR(5) takes up 5 bytes no matter what.  If you take a 20 and place it into our handy Hex converter you get the binary value of 00100000, which when converted to ASCII is a simple space.   So 58 is our X and 202020 20 are the 4 spaces in the record as well.

 

WRAP UP

 

While we have a choice in using CHAR and VARCHAR data types and whether we waste white space or not, we do not have that option with Integers or Dates and Times, which is a perfect reason to start learning about SQL Server Compression and reclaim some of that wasted space.

 

Thanks again for stopping by Dear Reader.

 

Thanks,

 

Brad

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