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Module 05 of 06 · SQL & Database Fundamentals

Performance

Why a query is slow, and what actually fixes it.

3 of 3 lessons available

Lessons in this module

  1. 01

    Indexes

    Advanced

    Create indexes that your queries actually use, and know what they cost on write.

    20 min
  2. 02

    Reading Execution Plans

    Advanced

    Interpret a plan to find why a query is slow.

    19 min
  3. 03

    Query Optimisation

    Advanced

    Rewrite queries measurably rather than by superstition.

    19 min

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