SQLite lacks full Unicode case folding support by default

3/10 Low

SQLite does not perform full Unicode case folding by default; SQL functions like upper() and lower() only work on ASCII characters. Supporting full Unicode case folding would require tables larger than the entire SQLite library, making it impractical.

SQLite
Category
docs
Workaround
hack
Freshness
persistent
Scope
single_lib
Upstream
wontfix
Recurring
No
Maintainer
active

Sources

Collection History

Query: “What are the most common pain points with SQLite for developers in 2025?”4/5/2026

SQLite does not know about the upper-case/lower-case distinction for all unicode characters. SQL functions like upper() and lower() only work on ASCII characters.

Created: 4/5/2026Updated: 4/5/2026