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
Tamil
Hindi
Malayalam
Marathi

Technology

February 25, 2018 / Technology
Generate Unique Counter in a Parallel Transformer Without Surrogate Key generator

Old but handy trick. @INROWNUM * @NUMPARTITIONS + @PARTITIONNUM Update – To start the series from 1, use (@INROWNUM –…

February 25, 2018 / Technology
LUTCreateOp and LUTProcessOp

DSxchange, every now and then, comes up with some very interesting discussions thanks to the DataStage gurus like Ray, Craig,…

February 25, 2018 / Technology
Aggregator Methods in DataStage (Courtesy: Ray Wurlod)

Here’s another favourite from DSXchange by Ray Wurlod Hash aggregation builds a hash table of results in memory. There is…

February 25, 2018 / Technology
What Exactly Are Hash Files? (Courtesy – Ken Bland)

I pasted this nice article by Ken Bland on my blog just for future reference. The original article can be…

February 25, 2018 / Technology
Transformer Date Derivations in DataStage

I’ve formulated a few derivations to calculate certain dates (Listed in BOLD). If your time dimension cannot help or you…

February 25, 2018 / Technology
DataStage Orchadmin Reference Guide

export DSHOME=$(cat /.dshome) . $DSHOME/dsenv export LD_LIBRARY_PATH=$APT_ORCHHOME/lib export APT_CONFIG_FILE=$DSHOME/../Configurations/default.apt export PATH=$DSHOME/bin:$APT_ORCHHOME/bin:/$PATH NAME orchadmin – delete, copy, describe and dump ORCHESTRATE…

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