SQLite 3.33 Increases Maximum Database Size
Written by Kay Ewbank   
Monday, 17 August 2020

SQLite has been updated, taking the maximum supported database size to 281TB, and adding support for UPDATE FROM. The new version also improves the integrity check verification.

SQLite is the most widely deployed database in the world, and is compact, with a library size of under 600KB with all features enabled. It is an in-process library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. In addition, the developers describe it as a language-agnostic development environment, with high-quality language kernels for languages including Python, C++, R and Julia.

sqliteThe new support for the UPDATE FROM clause in version 3.33 follows the PostgreSQL syntax. UPDATE FROM enables one table to be updated from a second table, but it isn't part of the SQL Standards, and difference products implement it slightly differently. The SQLite implementation has been written to be compatible with the way PostgreSQL interprets it, rather than the versions implemented in Microsoft SQL Server and MySQL.

Another improvement is an extension of the PRAGMA integrity_check statement so you can choose to limit it to verifying just a single table and its indexes, rather than the entire database file, making the operation faster and more flexible.

Decimal arithmetic is another area to have been targeted for improvement in this release, with the addition of a decimal extension for use in arbitrary-precision decimal arithmetic on numbers stored as text strings.  Functions for addition, subtraction and multiplication have been added - there's no division function yet.

The Query planner has been improved, so it's now possible to find a full index scan query plan for queries using INDEXED BY which previously would fail with "no query solution".

The planner also has better handling of missing, incomplete, or suspect sqlite_stat1 data and generates good query plans in spite of the misinformation. Finally, the performance has been improved of queries that find a minimum value in a table using a WHERE .... IN clause, so long as they have an appropriate index. 


More Information

SQLite Site

Related Articles

SQLite Improves Nulls Support

SQLite 3.27 Introduces Vacuum Into

SQLite Adds Zipfile Support

SQLite 3.20 Improves Query Planner

SQLite 3.17 Adds SHA1 Extensions 

SQLite 3.16 Adds Pragma Functions  

SQLite 3.15 Adds Row Value Support

Portable Version Of DB Browser For SQLite

SQLite 3.9 

SQLite Updated


To be informed about new articles on I Programmer, sign up for our weekly newsletter, subscribe to the RSS feed and follow us on Twitter, Facebook or Linkedin.


CodeSandbox Adds Support For Rust And Docker

Support for Rust and Docker has been added to the CodeSandbox cloud development environment. Until now, the development environment has concentrated on support for JavaScript and TypeScript.

NVIDIA Broadcast 1.4 Adds Eye Contact

A new feature in Broadcast, NVIDIA's AI-powered live streaming app, makes that it looks as though you are maintaining eye contact when you look away, for example to read from your notes. 

More News





or email your comment to: comments@i-programmer.info

Last Updated ( Monday, 17 August 2020 )