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Merge stage: fast path

Merge stage: fast path (DataStage)

This section specifies the minimum steps to take to get a Merge stage functioning.

To use the Merge stage:

  • Double-click the stage to open the stage editor. On the Stage tab, in the Properties section, specify the key column or columns that the Merge will be performed on.
  • On the Stage tab, in the Properties section, set the Unmatched Masters Mode, Warn on Reject Updates, and Warn on Unmatched Masters options or accept the defaults.
  • On the Stage tab, in the Link Ordering section, check that your input links are correctly identified as "master" and "update(s)", and your output links are correctly identified as "master" and "update reject". Reorder if required.
  • Ensure required column metadata has been specified (this might be done in another stage, or might be omitted altogether if you are relying on Runtime Column Propagation).
  • On the Output tab, go to the Columns section and click Edit. In the Maps from column input column section, specify how the columns from the input links map onto output columns.
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