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SARGability = Speed in DB2 for z/OS V8

(Gene Fuh and Guy Lohman) Recently, a knowledgeable friend inquired about the SARGability rules for the optimizers in the DB2 family. The WHATability? Don’t go running for your Merriam-Webster—you won’t find that term anywhere except in DB2 publications or Googling it (go ahead, give it a try!). But

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