Struct rustdb::expr::Expr

#[non_exhaustive]
pub struct Expr {
    pub exp: ExprIs,
    pub data_type: DataType,
    pub is_constant: bool,
    pub checked: bool,
    pub col: usize,
}

Scalar Expression (uncompiled).

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

exp: ExprIs

Expression kind.

data_type: DataType

Data type.

is_constant: bool

Doesn’t depend on FROM clause.

checked: bool

Has been type-checked.

col: usize

Column number.

Implementations

impl Expr

pub fn new(exp: ExprIs) -> Self

Construct new Expr.