Enum IdentCasing 

pub enum IdentCasing {
    FoldUnquoted,
    FoldAll,
}

How a dialect folds identifiers for case-insensitive comparison.

SQL unquoted identifiers are case-insensitive, so grad(Temp*Temp, temp) must match — otherwise it silently differentiates to 0. The exact rule is per-dialect (F1):

• IdentCasing::FoldUnquoted — unquoted identifiers fold to lowercase; quoted identifiers keep their case. (DataFusion, Postgres, the generic dialect.)
• IdentCasing::FoldAll — all identifiers fold to lowercase, quoted included. (DuckDB, which is fully case-insensitive.)

Variants

FoldUnquoted

Fold unquoted identifiers only (DataFusion / Postgres / generic).

FoldAll

Fold every identifier, quoted included (DuckDB).

Implementations

impl IdentCasing

pub fn fold(self, id: &Ident) -> String

The comparison key for a single identifier under this policy.

Trait Implementations

impl Clone for IdentCasing

fn clone(&self) -> IdentCasing

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for IdentCasing

impl Debug for IdentCasing

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

Formats the value using the given formatter.

impl Eq for IdentCasing

impl PartialEq for IdentCasing

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for IdentCasing