Is there a way to compare multiple columns in PowerPivot using DAX? - ssas

Say I have a table in a PowerPivot that looks like this:
For each row, I want to find the minimum value across Columns 1, 2 and 3 and display that value in the column "MinColumn". The built-in MIN function only seems to operate on a column though, and not a row.
Is there any way to do this, other than some kind of nested IF expression? If we have a lot of columns to compare, that would get very messy, very quickly.
PowerPivot/DAX does some great column-based stuff (to be expected given it's use of xVelocity) but seems to get complex when you start looking at row-level functionality.

Another option is to push the calculation down to the source.
For example, if your source is a database table, you could create a view (or simply use a named query) and calculate the MIN (across the 3 other columns) before you pull the data into PowerPivot.
Note: the TSQL version would also be fairly ugly, PIVOT + MIN() OVER()

Related

Column with multiple data types in Power BI Matrix Table

My issue is similar to this one Multiple data types in a Power BI matrix but I've got a bit of a different setup that's throwing everything off.
What I'm trying to do is create a matrix table with several metrics that are categorized as Current (raw data values) and Prior (year over year percent growth/decline). I've created some dummy data in Excel to get the format the way I want it in PowerBI (see below):
Desired Format
As you can see the Current values are coming in as integers and the Prior % numbers as percentages which is exactly what I want; however, I was able to accomplish this through a custom column with the following formula:
Revenue2 = IF(Scorecard2[Current_Prior] = "Current", FORMAT(FIXED(Scorecard2[Revenue],0), "$#,###"), FORMAT(Scorecard2[Revenue], "Percent"))
The problem is that the data comes from a SQL query and you can't use the FORMAT() function in DirectQuery. Is there a way I can have two different datatypes in the same column of data? See below for how the SQL data comes into PowerBI (I can change this if need be):
SQL
Create 2 separate measures, one for the Current second for Prior, and format these measures.
Probably you can also use a case in SQL query to format your data to bring it as STRING.
What I wound up doing was reformatting the SQL code to look like this:
Solution
That way Current/Prior are have two separate values and the "metric" is categorical.
I got the idea from this post:
Simple way to transpose columns and rows in SQL?

Static Values from Multiple Queries/Datasets in Single SSRS Tablix

ok so I have this report I have to write in SSRS with a very specific format. It looks like the screenshot below at the bottom. Ignore the arrows and colors. It's pulling from an Oracle database. Each number value cell in this table/matrix has a different sql query to pull it in because they come from different tables, etc.
the top half of the numbers in the table are each from a query. the bottom half of the table is all calculations from the numbers in the top half. I already have the queries for the top half and was trying to figure out how I could just use those to make this table in SSRS with just those and then creating calculations in the bottom half for the report. I can't use a table or a matrix because each query is a different dataset and you can only have one dataset per tablix.
I was thinking maybe doing textboxes and drawing the grid manually, which would be a huge pain. I get errors about not having an aggregate and being out of scope or something and haven't figured out the reason for this yet as it is not my ideal solution.
My current solultion that will eventually get me there is unioning every single query and then creating columns with static values for the rows and columns in the grid and turning it into a matrix. Problem with this is it continues to increase in complexity as I create each further down the table calculation, and the code becomes larger and larger, and takes a long time to create, and I have to do like 6 reports similar in nature to the format of this one. Will probably be a thousand lines of sql and force me to have to make a stored proc because of the ssrs character limitation.;
So my question in a more simple way is, how can I take multiple sql queries that return a static value and make them a single value in a tablix that doesn't repeat, then create more blank rows in that tablix that are calculations of other cells values, i.e. Textbox1 - textbox2, textbox3/textbox4 ?
I got it figured out using expressions with multiple datasets. The answer seemed too easy once I found it. Basically just created a table tablix using my first dataset. Created more detail rows with insert row inside group below. Then I went to the expression builder for each one and found the other dataset and double clicked it to get the expression to pull from the other dataset. For example the bac_labor dataset value would look like this. =Sum(Fields!BAC_LABOR.Value, "BAC_Labor")
Then for calculations can use either same thing like =Sum(Fields!BAC_LABOR.Value, "BAC_Labor") + Sum(Fields!BAC_LABOR_OVERHEAD.Value, "BAC_Labor") or could do something like this =ReportItems!Textbox2.Value - ReportItems!Textbox1.Value to reference a cell value. This saves a ton of time, development effort, and reduction of code for calculations, compared to adding together 500 character select statements to make calculations. Also no need to use stored procs and union or join every select statement together with this method.

SQL query questing to filter out rows

Explanation- In column "Raw content" i am having data like -MSH|^~\&|PYXIS|SJO|PHA|SJF1|201707171217||ACK|587044650|P|2.2|0| MSA|AA|587044650|....... Message in each row in b/w MSH data is different and i need to search for all the rows having MSH|* |* |CACPA| in place of SJO as shown in above example.. *(astric) means any value
What SQL query should be any suggestion?
Fix your data structure! You should not be storing multiple values in a single column. Instead, you should have a separate table with one row per whatever and per color. That is the right way to use a relational database.
That said, sometimes we are stuck with other people's really bad design decisions. There is a way around this:
where concat('|', colors, '|') not like '%|Red|%'

Summing different parts of a column in SQL

I have a database extract in excel and want to create a custom value in Tablue using their create calculation, which I believe is SQL based.
Basically I have a large number of feeds which all show up different amounts in a column. For example:
feed 1
feed 1
feed 2
feed 3
feed 4
feed 4
feed 4
And I want to have a sum for feed 1, feed 2, and feed 4. But in my actual DB there's about 100 feeds all with different number of appearances. I'm having troubles finding a good way to do this. If there even is one. Any help or direction would be appreciated!
I'm assuming that your list is a single column and you need a count of the number of occurrences of each feed. For the sake of example, since a column or table names were not supplied, let's call them colname and tablename.
select colname, count(*) as Ct from tablename group by colname
It would be easier to give an exact answer if you posted a small simplified subset of your spreadsheet. But assuming you have a column called "feed_name" which takes on values like "feed 1", "feed 2" etc depending on the row. Then the feed_name column should be a discrete dimension in Tableau.
Then just put the feed_name pill on a shelf, say the row shelf. And put the "Number of Records" field on another shelf, say the column shelf.
You don't need to write SQL to do this (or most tasks) in Tableau. It helps to understand SQL concepts and its very helpful to drop down to the SQL level when needed to solve tricky issues. But for most situations, you can just interactively explore the data by moving fields around and writing some simple calculations -- and let Tableau take care of generating the SQL necessary to retrieve the data needed to build the visualization you requested.
Tableau supports SQL and some NO-SQL data sources, along with some cubes too. It does that quite well and in multiple ways. You just can work more quickly and efficiently by using Tableau's visual based manipulations in most cases, and then drop to the lower level detail when needed. It just takes getting used to how Tableau operates.

Splitting data by column value into an indefinite number of tables using an ETL tool

I'm trying to split a table into multiple tables based on the value of a given column using Talend Open Studio. Let's say this column can contain any of the integer values of 1, 2, 3, etc. then according to this value, these rows should go to table_1, table_2, table_3 etc.
It would be best if I could solve this when the number of different values in that column is not known in advance, but for now we can assume that all these output tables exists already. The bottom line is that the number of different values and therefore the number of different tables are high enough that setting up the individual filters manually is not an option.
Is this possible to solve this using Talend Open Studio or any similiary open source ETL tools like Pentaho Keetle?
Of course, I could just write a simple script myself, but I would prefer to use a proper ETL tool since the complete ETL process is quite complex.
In PDI or Pentaho Kettle you could do this with partitioning. (A right click option on the step IIRC) Partitioning in PDI is designed for exactly this sort of problem.
Yes that's Possible to do and split the data on the basis of single column to different table, but for that you need to create table dynamically :-
tFileInputDelimited->tFlowtoIterate ->tFixedFlowInput->and the can use
globalMap() to get the column values and use the same to seperate the
data to different tables. -> And the can use globalMap(Columnused to
seperate data) in table name.
The first solution that came to my mind was using the replicator to transport the current row to three filters which act as guard and only let rows through with either 1 2 or 3 in the given column. pic: http://i.imgur.com/FmvwU.png
But you could also build the table name dynamically, if that is what you want, pic: http://i.imgur.com/8LR7Q.png