2024-11-13 18:22:06 +00:00
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---
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tags: [databases, SQL, SQLite]
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created: Wednesday, November 13, 2024
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---
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# SQLite
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2024-11-14 14:43:31 +00:00
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## Enabling foreign key constraints
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Foreign key constraints are not enabled by default - it is very permissive. You
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must manually turn them on, as part of the connection process:
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```py
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connection = sqlite3.connect("my_database.db")
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connection.execute("PRAGMA foreign_keys = ON")
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```
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2024-11-13 18:22:06 +00:00
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## INSERT OR IGNORE INTO
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If table has a `UNIQUE` constraint on a field, insert if it is unique otherwise
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skip without throwing a constraint error.
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```sql
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INSERT OR IGNORE INTO table_name (value) VALUES (:value)
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```
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