Articles & Content


Understanding the Query Optimizers Explain File (K06)

Topic: 2005 NA

Subtopic: Informix

DATE: 2005-05-24 (10:00 AM - 11:10 AM)
SPEAKERS: John F. Miller III (IBM)

The set explain file is used by DBA to examine the plan the optimizer is using for queries. This talk will examine the different parts of the set explain file and how to interupt them.

EXP. LEVEL: Intermediate


Query Optimizers Explain File

The different parts of the explain file

The different optimizer operators

Interupting the information in the explain file

Correcting problems

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