# Faster schema changes for large SQLite databases

DevFeed: [Faster schema changes for large SQLite databases](<https://devfeed.tech/articles/faster-schema-changes-for-large-sqlite-databases-5946.md>)

Original publisher: [Read original article](<https://turso.tech/blog/faster-schema-changes-for-sqlite-databases>)

Author: Levy Albuquerque

Published: 2025-09-02T00:00:00Z

Content type: article

Language: en

Sources: [Turso Blog](<https://devfeed.tech/sources/turso-blog.md>)

Topics: [Database](<https://devfeed.tech/topics/database.md>), [Platform API](<https://devfeed.tech/topics/platform-api.md>)

Tags: [databases](<https://devfeed.tech/tags/databases.md>), [memory](<https://devfeed.tech/tags/memory.md>), [performance](<https://devfeed.tech/tags/performance.md>), [rust](<https://devfeed.tech/tags/rust.md>), [sql](<https://devfeed.tech/tags/sql.md>), [sqlite](<https://devfeed.tech/tags/sqlite.md>), [turso](<https://devfeed.tech/tags/turso.md>)

## AI overview

The article explains how Turso accelerates schema changes in large SQLite databases by replacing full schema rescans with targeted in-memory mutations and improving initial schema loading.

## Source excerpt

How Turso speeds up ALTER TABLE on large SQLite schemas: direct in-memory schema mutations and a handwritten parser replace full sqlite_schema rescans.