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FROM SQL to DAX
@Anniexu1990
Why use DAX
• More secure and one source of truth
• Faster
• Easier
• Another Option
Use DAX to get information from Model
instead of using SQL to get data from tables
• SQL to DAX – SELECT, Grouping,Table Joins
• SQL to DAX – FILTER, Customized Measures
• Query plan and performance tuning
• ETL replacement
SQL to DAX – SELECT, Grouping,Table Joins
SQL
• Select
• FROM
• Top
• Join
• Having
DAX
• Evaluate
• Summarize
• Addcolumns
• TOPN
• ISBLANK
DEMO
SQL to DAX – FILTER, Customized Measures
SQL
• Select
• FROM
• Where
• CTE/Sub-quries/TempTable
• Join
• Having
DAX
• Filter
• Values
• All
• Calculate/CalculateTable
• ROWS
• DEFINE
DEMO
Query plan and performance tuning
• SQL Query Plan
• Logic/Physical Execution Plan
• SQL Query ExecutionTime Code
• SET STATISTICSTIME ON/OFF
• DAX Query plan
• DAX Studio Query Plan
• DAX ServerTiming
• DAX Studio ServerTimings
DEMO
Use DAX to save your ETL process time
• Inactive Relationships
• ExtendedTable
• TimeTraveling
• Blocking Filter Context
DEMO
Useful Links
• http://anniexu1990.com
• https://www.sqlbi.com/
• https://powerpivotpro.com
• Book: The Definitive Guide to DAX

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Sql to dax

  • 1. FROM SQL to DAX @Anniexu1990
  • 2. Why use DAX • More secure and one source of truth • Faster • Easier • Another Option
  • 3. Use DAX to get information from Model instead of using SQL to get data from tables • SQL to DAX – SELECT, Grouping,Table Joins • SQL to DAX – FILTER, Customized Measures • Query plan and performance tuning • ETL replacement
  • 4. SQL to DAX – SELECT, Grouping,Table Joins SQL • Select • FROM • Top • Join • Having DAX • Evaluate • Summarize • Addcolumns • TOPN • ISBLANK DEMO
  • 5. SQL to DAX – FILTER, Customized Measures SQL • Select • FROM • Where • CTE/Sub-quries/TempTable • Join • Having DAX • Filter • Values • All • Calculate/CalculateTable • ROWS • DEFINE DEMO
  • 6. Query plan and performance tuning • SQL Query Plan • Logic/Physical Execution Plan • SQL Query ExecutionTime Code • SET STATISTICSTIME ON/OFF • DAX Query plan • DAX Studio Query Plan • DAX ServerTiming • DAX Studio ServerTimings DEMO
  • 7. Use DAX to save your ETL process time • Inactive Relationships • ExtendedTable • TimeTraveling • Blocking Filter Context DEMO
  • 8. Useful Links • http://anniexu1990.com • https://www.sqlbi.com/ • https://powerpivotpro.com • Book: The Definitive Guide to DAX