IBM Cognos Dynamic Query

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Optimizing SQL for performance

The IBM Cognos Business Intelligence (BI) server generates Structured Query Language (SQL) queries to retrieve data from relational databases. Users must wait while the database responds to such queries. This chapter provides guidance for minimizing these wait times.

The chapter contains the following sections:

•6.1, “Remember that less is faster” on page 68

•6.2, “Make use of enforced and non-enforced constraints” on page 68

•6.3, “Use indexes and table organization features” on page 69

•6.4, “Review column group ...

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