Learn how to tune SQL with Constraints! In this lesson (4 of 5), OCM John Watson from SkillBuilders demonstrates how to improve query performance by adding not null constraints.
See all lessons, free at http://www.skillbuilders.com/oracle-database-sql-tuning-with-constraints.
See all lessons, free at http://www.skillbuilders.com/oracle-database-sql-tuning-with-constraints.
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