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Amie-Louise's avatar
Amie-Louise
New Member
9 years ago
Solved

Get Records from Table A that are not in Table B

Hi,    I am new to Power BI and SQL Queries (therefore apologies if my question seems very basic) ... I am trying to populate a table to show all records from Table A that are not in Table B and am...
  • kaushikd's avatar
    kaushikd
    9 years ago

    Hi Amie-Louise

    I have used your two dataset as 'Table1(Lead Website)' and  'Table1(Database)'

     

    Here is your DesiredTable you want

     

     

    Please Note 

    You have to create a Dummy Table which will hold the Intersect records of 'Table1(Lead Website)' and  'Table1(Database)'

     

    DummyTable Screenshot

     

     

     

     

    Steps:-

    1. Switch to the Data View  

    2. Go to the Modelling Tab and choose New Table.

    3. Fire the query

    DummyTable = INTERSECT('Table1(Lead Website)','Table1(Database)')

    4. Again Choose New Table 

    5. Fire the Query

    DesiredTable = EXCEPT('Table1(Lead Website)',DummyTable)

     

    If this is what you want then

    Please give Kudos and Accept this as a solution

Eric_Zhang's avatar
Eric_Zhang
Icon for Microsoft Employee rankMicrosoft Employee
9 years ago

Amie-Louise

What are those two tables' schema like? 

If they have the same column, you can use EXCEPT in SQL or in DAX.

 

SQL
 SELECT column1,column2,column3 FROM Table1
 EXCEPT
 SELECT column1,column2,column3 FROM Table2

DAX
 difference Table = EXCEPT(Table1,Table2)

If they have different columns and the duplication is identified by some key column, say ID

 

SQL
  SELECT * FROM Table1 T1
  WHERE NOT EXISTS(SELECT 1 FROM Table2 t2 WHERE t2.id=t1.id )

DAX
 difference Table = FILTER(Table1,NOT(CONTAINS(Table2,Table2[ID],Table1[ID])))
Anonymous's avatar
Anonymous
Not applicable
4 years ago

Best Answer 
Thank you