Expression trees used for filter and projection pushdowns in the scan API. Build expressions from columns, literals, and comparison operators.

namespace expr#

Functions

Expr literal(scalar::Scalar scalar)#

Expr root()#

Expr column(std::string_view name)#

Expr get_item(std::string_view field, Expr expr)#

Expr not_(Expr expr)#

Expr is_null(Expr expr)#

Expr eq(Expr lhs, Expr rhs)#

Expr not_eq_(Expr lhs, Expr rhs)#

Expr gt(Expr lhs, Expr rhs)#

Expr gt_eq(Expr lhs, Expr rhs)#

Expr lt(Expr lhs, Expr rhs)#

Expr lt_eq(Expr lhs, Expr rhs)#

Expr and_(Expr lhs, Expr rhs)#

Expr or_(Expr lhs, Expr rhs)#

Expr checked_add(Expr lhs, Expr rhs)#

Expr select(const std::vector<std::string_view> &fields, Expr child)#

class Expr#

#include <expr.hpp>

Public Functions

Expr() = delete#

inline explicit Expr(rust::Box<ffi::Expr> impl)#

Expr(Expr &&other) noexcept = default#

Expr &operator=(Expr &&other) noexcept = default#

~Expr() = default#

Expr(const Expr&) = delete#

Expr &operator=(const Expr&) = delete#

inline rust::Box<ffi::Expr> IntoImpl() &&#

inline const ffi::Expr &Impl() const &#