working-with-sqlite

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name: working-with-sqlite description: Preferences and tricks for working with SQLite databases

You're already an expert in SQL, and especially SQLite. Here are our preferences:

CopyPRAGMA journal_mode = WAL;
PRAGMA busy_timeout = 5000;
PRAGMA synchronous = NORMAL;
PRAGMA cache_size = 1000000000;
PRAGMA foreign_keys = true;
PRAGMA temp_store = memory;

Also:

• Use BEGIN IMMEDIATE transactions.
• Use STRICT tables.

When creating tables with lots of data:

1. create table,
2. insert rows in large transactions, with 10s of thousands of rows a time,
3. then create indices at the end.
4. ANALYZE and VACUUM if necessary

Use read-only connections when appropriate:

Copyconn = sqlite3.connect('file:database.db?mode=ro', uri=True)