azure data factory

Question

insert into the ERPUID_PPL column in destination table

logic is:
CASE
WHEN[ERP]='SAP ITT' THEN[AU-CC] ELSE[ERP_UID]

HOW TO ACHIEVE THIS USING DERIVED COLUMN IN DATA FLOW AND HOW TO WRITE LOGIC FOR CASE STATEMENT IN EXPRESSIN BUILDER

Answer 1

Hi @Anandazure ,

Thanks for using Microsoft Q&A forum and posting your query.

Assuming [ERP], [AU-CC] and [ERP_UID] as column names, then your case statement in expression builder should be:

case (            
ERP =='SAP ITT', AU-CC,  
  ERP_UID   
)  

If [AU-CC] and [ERP_UID] are static values (not columns), then you case statement should be as below.

case (            
    ERP =='SAP ITT', 'AU-CC',  
      'ERP_UID'   
    )  

Here are couple more examples for better understanding
True case:

• case(10 + 20 == 30, 'dumbo', 'gumbo') ->This will return 'dumbo' as the condition 10+20==30 is true
• case(10 + 10 == 30, 'dumbo', 'gumbo') -> This will return 'gumbo' as the condition 10+10==30 is false

Here is a demonstration video on how to write case statement in Mapping data flow expression builder. Splitting Arrays and Case Statements in ADF Data Flows

Hope this helps. Do let us know if you have further query.

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