SQLite STRICT tables enforce data types and prevent silent type bugs since v3.37

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SQLite, widely known for its flexible dynamic type system, has long allowed inserting mismatched data types into columns without raising errors. Since version 3.37.0, released on November 27, 2021, SQLite introduced STRICT tables, which enforce declared column types and reject incompatible values. Developer Evan Hahn recently highlighted the feature in a blog post, arguing that STRICT mode should be the default behavior for all SQLite databases. Activating STRICT mode requires only adding the STRICT keyword to a CREATE TABLE statement, with no extensions or extra configuration needed. However, converting an existing table to STRICT is not straightforward, as there is no ALTER command for this purpose and the table must be recreated with data copied over.

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