What is semi-join in SAP EIM-DI-DF - SAP BusinessObjects Data Federator?

SAP Term: semi-join

• Component: EIM-DI-DF

• Component Name: SAP BusinessObjects Data Federator

• Description: An operation between two tables that returns the rows of the first table that match at least one row in the second table. In other words, the first table is filtered with the rows of the second table.

Smart SAP Assistant

• Key Concepts: 
  A semi-join is a type of join operation used in SAP BusinessObjects Data Federator (EIM-DI-DF). It is used to combine two data sources into one result set, but only returns the rows from the first data source that match the criteria specified in the second data source. 
  
  How to use it: 
  To use a semi-join, you must first define the two data sources that you want to join. Then, you must specify the criteria for the join operation. This can be done by selecting a field from each data source and specifying a comparison operator (e.g. “equal to”). Finally, you must specify which fields from each data source should be included in the result set. 
  
  Tips & Tricks: 
  When using a semi-join, it is important to remember that only rows from the first data source that match the criteria specified in the second data source will be returned in the result set. Therefore, it is important to ensure that the criteria specified is appropriate for your needs. 
  
  Related Information: 
  For more information on semi-joins and other join operations in SAP BusinessObjects Data Federator, please refer to the official documentation available on SAP’s website.