by Markus Winand.

Getting an Execution Plan


SQLite offers two different levels of execution plans: (1) the machine code for the virtual machine; (2) the high level query plan.

This tutorial shows the second variant only.

EXPLAIN QUERY PLAN

You can prefix any arbitrary SQL command by explain query plan to retrieve the query plan (instead of running the query).

EXPLAIN QUERY PLAN
SELECT RANDOM()

This minimalistic example returns the following execution plan:

QUERY PLAN
`--SCAN CONSTANT ROW

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Markus Winand is the SQL Renaissance Ambassador. He is on a mission to introduce developers to the evolution of SQL in the 21st century. Markus can be hired as trainer, speaker and consultant via winand.at.

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