Lookup Join

vsvoboda@trask.cz

• July 27, 2007 00:00

• Answered

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Hi,

Can you tell me how work the component Lookup Join.

I think, that the component Lookup Join work as merge or can I this component use different with merge records from database.

Thanks

• 

  dpavlis

  • July 27, 2007 20:41

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  The LookupJoin works similarly to HashJoin - it uses pre-defined lookup table and joins all input records with records in the lookup table.
  
  The advantage is that you may define internally lookup table - SimpleLookup/DBLookup/RangeLookup, populate it somehow in graph (using LookupReaderWriter) and then (in following phase) perform joining.

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