[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Sqlite](https://evolu.dev/docs/api-reference/common/Sqlite) › SqliteBoolean

```ts
const SqliteBoolean: union(0, 1);
```

Defined in: [packages/common/src/Sqlite.ts:654](https://github.com/evoluhq/evolu/blob/49ea8ca499566aba270f8cb601e7f49aa62320f8/packages/common/src/Sqlite.ts#L654)

SQLite represents boolean values using `0` (false) and `1` (true) instead of
a dedicated boolean type.

See: https://www.sqlite.org/quirks.html#no_separate_boolean_datatype

## Tips

- Use [sqliteTrue](https://evolu.dev/docs/api-reference/common/Sqlite/variables/sqliteTrue) and [sqliteFalse](https://evolu.dev/docs/api-reference/common/Sqlite/variables/sqliteFalse) constants for better
  readability.
- Use [booleanToSqliteBoolean](https://evolu.dev/docs/api-reference/common/Sqlite/functions/booleanToSqliteBoolean) and [sqliteBooleanToBoolean](https://evolu.dev/docs/api-reference/common/Sqlite/functions/sqliteBooleanToBoolean) for
  converting between JavaScript booleans and SQLite boolean values.