Struct SchemaCookie

pub struct SchemaCookie(/* private fields */);

Schema cookie (4 Bytes)

The schema cookie is a 4-byte big-endian integer at offset 40 that is incremented whenever the database schema changes. A prepared statement is compiled against a specific version of the database schema. When the database schema changes, the statement must be reprepared. When a prepared statement runs, it first checks the schema cookie to ensure the value is the same as when the statement was prepared and if the schema cookie has changed, the statement either automatically reprepares and reruns or it aborts with an SQLITE_SCHEMA error.

Methods from Deref<Target = u32>

pub const MIN: u32 = 0u32

pub const MAX: u32 = 4_294_967_295u32

pub const BITS: u32 = 32u32

Trait Implementations

impl Debug for SchemaCookie

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SchemaCookie

fn default() -> SchemaCookie

Returns the “default value” for a type.

impl Deref for SchemaCookie

type Target = u32

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Name for SchemaCookie

const NAME: &'static str = "SchemaCookie"