topic Re: DAX FILTER SYNTAX in DAX Commands and Tips

DAX FILTER SYNTAX

Anonymous — Tue, 05 May 2020 23:11:32 GMT

Hello all ,

I need your help please

I have two tables - orders and products category

products culumns category , sub_category , product_id ( product_id can be in many sub_categories)

orders culumns - cust_id , order_date ,product_id , category , sub_category

how can I create a measure that showes only orders of products that have more than one sub_category ?

Re: DAX FILTER SYNTAX

Greg_Deckler — Tue, 05 May 2020 23:40:42 GMT

Something along the lines of:

Measure = VAR __Products = FILTER( GROUPBY( 'products culumns', [product_id], "Count",COUNTX(CURRENTGROUP(),[sub_category]) ), [Count]>1 ) RETURN <some calculation where FILTER('orders culumns',[product_id] IN __Products) >

Re: DAX FILTER SYNTAX

Anonymous — Tue, 05 May 2020 23:42:15 GMT

Why do both of your tables have fields "category" and "sub_category"? Is it not enough to store these is the Products dimension?

Best
D

Re: DAX FILTER SYNTAX

Anonymous — Tue, 05 May 2020 23:56:25 GMT

no ...i need it to create a relation between the tables so on could filter the other

Re: DAX FILTER SYNTAX

Anonymous — Wed, 06 May 2020 00:22:02 GMT

You can't create a relationship between 2 tables on many columns. Secondly, slicing Orders by category and sub_category should be carried out via Products where these columns (should) reside. Please note that slicing should NEVER be done directly on a fact table, only via dimensions. If you don't follow the rules, you'll be sorry rather sooner than later. Even better, you'll be creating complex and potentially slow DAX which at times will return wrong results without you even realizing this.

Consider yourself warned (for your own good).

Best

Re: DAX FILTER SYNTAX

Anonymous — Wed, 06 May 2020 00:25:17 GMT

By the way... If your products belong to many subcategories, then you should have a hidden bridge table from ProductId to SubcategoryId which will join to Products and Subcategories on both sides and slicing should be then performed via Products and/or Subcategories.

Best
D

Re: DAX FILTER SYNTAX

Anonymous — Wed, 06 May 2020 01:35:38 GMT

The filter is by the category (pk)

anyone knowes how to create this DAX ?