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Gopal_PV's avatar
Gopal_PV
Helper III
1 year ago
Solved

Most used Power Query concepts and Data modelling in real time

Hi Friends, I am very new to Power Query(I know Basic all avalable options) . I have used SSAS Analysis services live connection. In all the interviews they are asking about Data Modelling and Powe...
  • Anonymous's avatar
    Anonymous
    1 year ago

    Hi Gopal_PV,

    Thank you for reaching out in Microsoft Community Forum.

    1. Below are the most used power query tasks;
    Remove nulls, unpivot data, merge/append tables, extract values, create parameters/functions.

    2.data modeling concepts:
    Star schema, relationships, DAX context, calculated columns vs measures, role-playing dimensions

    3. Below are the links to learn advance power query concepts;
    https://learn.microsoft.com/en-us/power-query/

    Please continue using Microsoft Community Forum.

    If this post helps in resolve your issue, kindly consider marking it as "Accept as Solution" and give it a 'Kudos' to help others find it more easily.

    Regards,
    Pavan.

  • Omid_Motamedise's avatar
    1 year ago

    Most Common Power Query Requirements in Interviews are:
    Data Transformation Basics => Importing data from different sources (Excel, CSV, databases, web, PDFs) / Cleaning data: removing duplicates, filtering rows, replacing values/ Changing data types properly

    Advanced Power Query Skills => M language basics and writing custom functions / Parameterizing queries for dynamic filtering/ Combining data: merging and appending tables with different structures/ Handling errors and missing data (using try...otherwise, Table.HasErrors, etc.) / Grouping data and aggregation in Power Query (Table.Group) / Using List and Record functions for advanced transformations / Working with dates and text transformations / Optimizing query performance with buffering (Table.Buffer) and query folding awareness