【Power BI常用工具筆記】Extract, Transform and Load Data

pivot and unpivot table

Combining queries

Append queries

Merge queris

Join

merge with join:

4 join type

left outer join

right outer join

full outer join

inner join

import concept:

join key

Transforming

staging area: pot- bowls-utensils

data profiling: check the view->column quality

->column profile : expamole when you want to check the age range, it will be show the range

reference quires

dataflow

data anomaly

M language

  • Data Sources supported by Power BI
  • Local datasets vs. shared datasets
  • Storage modes in Power BI
  • Structured vs. unstructured data
  • PowerBI Connectors
  • Triggers and Actions
  • Data Types in Power BI
  • The Applied Steps List
  • Common Data Errors
  • Pivot and Unpivot Columns
  • Combining Tables with append
  • Combining tables with merge
  • Join Types
  • Join Keys
  • Loading Data
  • The Staging Area in Power BI
  • Profiling Data in Power BI
  • Using the Data Profiling Tools
  • Reference queries and dataflows
  • Query Parameters
  • Global options for files

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