In the Fields area of the Joiner transformation, you can perform the following tasks:
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However, if your datasets are very large, removing fields in the Joiner transformation can have a performance impact. For more information, see Optimizing Joiner performance.
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Field names in the output schema must be unique. If the input schemas have field names that are identical, you can either use the Wrangler to rename the fields or add aliases in the Joiner transformation.
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After you add aliases, click Get Schema to refresh the Output Schema.
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