Wise Owl Training - SSAS tabular blogs (page 1 of 2)

Showing blogs 1-20 (out of 32)

How to use security roles to restrict access to your SSAS Tabular model

Posted by Andy Brown on 26 February 2016

Perspectives in Analysis Services let you show different parts of your tabular model to different people, but they don't have any security. To ensure that the right eyes see the right bits of your model, you'll need to create and manage security roles, as explained in this blog.

Administrator access to a tabular Analysis Services instance

Posted by Andy Brown on 22 February 2016

This blog gives an outline of how to add administrators to an instance of SSAS, and how to set whether some accounts are automatically made administrators by default.

How to use DirectQuery to run queries in SSAS Tabular against SQL Server tables

Posted by Andy Brown on 22 February 2016

DirectQuery mode allows you to run queries in Analysis Services (Tabular) directly against the underlying SQL Server tables imported into the model. This blog explains what DirectQuery is, shows how to enable it and gives an idea of its pros and cons.

Find how to use table partitions in SSAS Tabular to process data more quickly

Posted by Andy Brown on 19 February 2016

You can partition a table in SSAS Tabular, which involves processing it in chunks rather than in one fell swoop. This blog explains how partitions work, and how to set them up and use them.

How to process tables in your model, and ideas for speeding processing up

Posted by Andy Brown on 19 February 2016

Processing tables involves loading data into your model, and can take a long time. This blog explains how processing works in SSAS Tabular and the different options available to you, shows how to process tables or models, and gives some ideas on how to make processing run more quickly.

Using tabular model perspectives to restrict which tables a user sees

Posted by Andy Brown on 18 February 2016

Perspectives in SSAS tabular are windows which allow you to control who sees which bits of your model. They're really easy to set up, as this blog shows, but aren't a substitute for setting security roles.

How PowerPivot differs from SSAS Tabular, and using it to prototype data models

Posted by Andy Brown on 18 February 2016

PowerPivot is virtually identical to SSAS Tabular underneatht the glossy exterior, but it has got a few extra features explained in this blog (which also shows how to import PowerPivot data models into Analysis Services, and why you might want to do this).

How to get data from tabular models using DAX queries in various programs

Posted by Andy Brown on 18 February 2016

Knowing how to write DAX queries is one thing, but where are you going to use them? This blog shows how you can integrate DAX queries into SSMS, SSRS, SSIS, Excel and PowerPivot.

How to write queries in DAX to interrogate SSAS tabular models

Posted by Andy Brown on 12 February 2016

As well as creating measures to aggregate data in tabular models using DAX, you can also write queries to extract data - this blog shows you how!

How to create and use hierachies in Analysis Services tabular model

Posted by Andy Brown on 11 February 2016

Hiearchies allow you to group related columns together, to make for prettier pivot tables and happier users. This blog shows you how to create and use hiearchies in SSAS Tabular, considers whether they're worth it, and also looks at the specific case of how to model parent-child hierarchies.

A technique to group measures together so they can be added with one click

Posted by Andy Brown on 08 February 2016

If you've worked with date measures (or any others) in DAX for a while, you'll know they can clutter up your pivot table. This clever technique allows you to tick a single box to add lots of measures into a pivot table in one go.

How to use DAX date-based functions in Analysis Services tabular model

Posted by Andy Brown on 08 February 2016

There are some wonderful date functions in DAX, with evocative names like TotalYtd, SamePeriodLastYear and ParallelPeriod. This blog shows how to use DAX date functions to summarise data, assuming that you have already created a calendar table.

How to crash Analysis Services (Tabular Model)

Posted by Andy Brown on 05 February 2016

It's not often you find a place to right-click which is pretty much guaranteed to crash a software package, so I thought I'd share this discovery!

How to create absolute and relative KPIs in SSAS Tabular

Posted by Andy Brown on 28 January 2016

You can create key performance indicators (KPIs) within Analysis Services Tabular, but there a couple of foibles that you need to be aware of, as shown by this blog.

Ways to model different DAX calendar date situations

Posted by Andy Brown on 22 January 2016

In the real world (or at least, the DAX version of it), calendars and dates aren't quite as simple as one would like. This blog shows how to solve a number of common scenarios, including where different tables have different levels of "granularity", coping with special days like bank holidays, handling non-standard finanical year-end dates and dealing with a table which contains more than one date column.

How to create a calendar in SSAS Tabular to summarise by dates

Posted by Andy Brown on 21 January 2016

Analysis Services has lots of wonderful DAX functions like TOTALYTD and SAMEPERIODLASTYEAR which allow you to summarise your results by date, but to get them to work you'll need to create and use a calendar table first. This blog explains how, and why.

How to use the EARLIER function in DAX to sort, group, band and accumulate data

Posted by Andy Brown on 13 January 2016

Although the EARLIER function in DAX is complicated, it's also very useful! This blog shows how the function works, and how to use it to create running totals, sort rows, create group statistics and divide data into bands.

How to use the RANKX function in DAX measures to sort data

Posted by Andy Brown on 12 January 2016

The RANKX function is one way (probably the best one) to sort data. It's not the world's easiest function to understand, but this blog explains the pitfalls.

How to use the FILTER function in DAX to filter tables

Posted by Andy Brown on 12 January 2016

Although the CALCULATE function is by more useful (and often easier to understand), DAX programmers should also learn about the FILTER function. This provides another way to change the query context for any aggregation.

How to use the CALCULATE function in DAX measure formulae

Posted by Andy Brown on 12 January 2016

The CALCULATE function is the most important one in DAX. This blog shows you how to use it to replace, remove and amend the query context for a measure (and also explains what this sentence means!).

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