Struct ComputedExpr 

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

A SQL expression a projection may emit verbatim, in place of reading a key out of the JSONB column (#959).

The inner string is private and there is no public constructor: the only way to obtain one is vector_distance_expr, which builds it from a validated identifier, an operator drawn from a fixed set and a literal whose character set it re-checks. A projection is SQL the caller does not get to write, and this type is what enforces that across the crate boundary — fraiseql-core can carry one into a ProjectionField but cannot invent one.

Implementations

impl ComputedExpr

pub fn as_sql(&self) -> &str

The expression as it will appear in the SELECT list.

Trait Implementations

impl Clone for ComputedExpr

fn clone(&self) -> ComputedExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ComputedExpr

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

Formats the value using the given formatter.

impl Eq for ComputedExpr

impl PartialEq for ComputedExpr

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ComputedExpr