Jerome Rajan

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Jerome Rajan
Staff Solutions Consultant at Google
Data & Analytics
  • Residence:
    India
  • City:
    Mumbai
SQL
Dataproc, EMR
Hadoop
BigQuery
AWS Glue
PySpark, Python
Data Pipeline Design
Tableau, Redshift, Snowflake
IBM DataStage
  • AWS Lambda, S3, EMR, SQS, DynamoDB, Step Functions, Cloud Functions
  • Unix Shell Scripting, Python
  • Oracle, DB2, Redis
  • Alteryx, VBA, Blueprism, UiPath
English
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Hindi
Malayalam
Marathi

Generate Unique Counter in a Parallel Transformer Without Surrogate Key generator

February 25, 2018

Old but handy trick.

@INROWNUM * @NUMPARTITIONS + @PARTITIONNUM

Update –
To start the series from 1, use

(@INROWNUM – 1) * @NUMPARTITIONS + @PARTITIONNUM + 1

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