Performance Anti-Patterns: Non-query DML inside loops

Lots of code follows patterns. Some of the patterns are good ones, some them are bad - and these we call "anti-patterns." In this video, Steven identifies a common and, for many, surprising anti-pattern - and then shows how to turn it into a design pattern worthy of use. The anti-pattern is the execution on non-query DML (inserts, updates, deletes) inside a loop. The refactored positive design is based on bulk processing in PL/SQL. Along the way, Steven shows how this involves moving from row-by-row to phased processing.

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