Enum Collation 

pub enum Collation {
    Binary,
    CaseInsensitive,
}

v7.17.0 Phase 2.5 — column-level text collation. Drives the engine’s WHERE / GROUP BY equality routing for Value::Text. Only two variants are modelled in v7.17:

• Binary — byte-wise comparison (the SPG default; matches PG COLLATE "C" / pg_catalog.default and MySQL *_bin).
• CaseInsensitive — ASCII case-folded comparison (like MySQL *_ci collations; PG has NO built-in collation of this name — round-761 audit: a nondeterministic ICU collation must be CREATEd there first). Non-ASCII bytes still compare byte-wise; full ICU folding is out of v7.17 scope. New variants append at the end — older catalogs read missing columns as Binary.

Variants

Binary

CaseInsensitive

Implementations

impl Collation

pub const TAG_BINARY: u8 = 0

Wire tag persisted in the FILE_VERSION 34+ catalog appendix. Stable: future variants append above the recognised range and unknown tags read back as Binary for forward-compat on rollback.

pub const TAG_CASE_INSENSITIVE: u8 = 1

Trait Implementations

impl Clone for Collation

fn clone(&self) -> Collation

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Collation

impl Debug for Collation

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

Formats the value using the given formatter.

impl Default for Collation

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Collation

impl PartialEq for Collation

fn eq(&self, other: &Collation) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Collation