Enum SchemaExprContext 

pub enum SchemaExprContext {
    None,
    CheckConstraint,
    GeneratedColumn,
    Index,
}

The schema-attached expression context an expression is being evaluated in, if any. None (the default) means an ordinary query context where non-deterministic date/time functions are allowed.

Variants

None

Ordinary evaluation (SELECT, VALUES, WHERE, …): no restriction

CheckConstraint

A CHECK constraint expression

GeneratedColumn

A generated (computed) column expression

Index

An index expression or a partial index’s WHERE predicate

Implementations

impl SchemaExprContext

pub fn description(self) -> Option<&'static str>

SQLite’s human-readable name for the context, used in the “non-deterministic use of f() in {ctx}” error message. Returns None for the unrestricted context.

pub fn non_deterministic_error(self, func_name: &str) -> Option<ExecutorError>

Build the SQLite-compatible rejection error for a non-deterministic use of func_name in this context, or None when evaluation is unrestricted. func_name may be uppercase (internal convention); SQLite prints the lowercase function name.

Trait Implementations

impl Clone for SchemaExprContext

fn clone(&self) -> SchemaExprContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SchemaExprContext

impl Debug for SchemaExprContext

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

Formats the value using the given formatter.

impl Default for SchemaExprContext

fn default() -> SchemaExprContext

Returns the “default value” for a type.

impl Eq for SchemaExprContext

impl PartialEq for SchemaExprContext

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SchemaExprContext