When Reference Data Fits in Memory - Teradata Vantage

Machine Learning Engine Analytic Function Reference

Product
Teradata Vantage
Release Number
8.00
1.0
Published
May 2019
Language
English (United States)
Last Update
2019-11-22
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blj1506016597986.ditamap
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B700-4003
lifecycle
previous
Product Category
Teradata Vantage™

Use this syntax when one input (a or b) fits in memory. The function compares each record from a and each record from b. The number of comparisons is |a|*|b|.

Version 1.5

SELECT * FROM IdentityMatch (
  ON source_input_table AS a PARTITION BY ANY
  ON reference_input_table AS b DIMENSION
  USING
  IDColumn ('a.id_column: b.id_column')
  { NominalMatchColumns ('a.columnX: b.columnY' [,...]) |
    FuzzyMatchColumns ('a.columnX: b.columnY, match_metricmatch_weight [, synonym_file ]' [,...])
  }
  [ Accumulate ('{a|b}.accumulate_column' [,...]')]
  [ ThresholdScore (threshold) ]
) AS alias;