Table of Contents

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  1. Preface
  2. Introduction to PowerExchange for Google BigQuery
  3. PowerExchange for Google BigQuery Configuration
  4. Google BigQuery Sources and Targets
  5. Google BigQuery Mappings
  6. Google BigQuery Sessions
  7. Google BigQuery as CDC Target
  8. Google BigQuery Pushdown Optimization
  9. Appendix A: Google BigQuery Data Type Reference

PowerExchange for Google BigQuery User Guide for PowerCenter

PowerExchange for Google BigQuery User Guide for PowerCenter

Rules and Guidelines for Google BigQuery Lookups

Rules and Guidelines for Google BigQuery Lookups

Consider the following rules and guidelines when you configure a lookup transformation in a Google BigQuery session:
  • You cannot configure an uncached lookup transformation in a Google BigQuery session.
  • When you configure a Lookup transformation, you must select the Google BigQuery lookup table for the Lookup transformation in the
    Source
    tab or the
    Source Qualifier
    tab.
  • When you use a Google BigQuery connection in simple mode and the Lookup table contains multiple columns of repeated data type, you must specify one of the columns of repeated data type in the lookup condition and delete the remaining columns of repeated data type in the Lookup transformation and in the source qualifier.
  • When you configure the
    On multiple matches
    property for a Lookup trasformation, the
    Return first row
    or
    Return last row
    options are not applicable.

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