Struct postgres_parser::sys::CurrentOfExpr

#[repr(C)]pub struct CurrentOfExpr {
    pub xpr: Expr,
    pub cvarno: Index,
    pub cursor_name: *mut c_char,
    pub cursor_param: c_int,
}

Node representing [WHERE] CURRENT OF cursor_name

CURRENT OF is a bit like a Var, in that it carries the rangetable index of the target relation being constrained; this aids placing the expression correctly during planning. We can assume however that its "levelsup" is always zero, due to the syntactic constraints on where it can appear.

The referenced cursor can be represented either as a hardwired string or as a reference to a runtime parameter of type REFCURSOR. The latter case is for the convenience of plpgsql.

Fields

xpr: Expr

cvarno: Index

cursor_name: *mut c_char

RT index of target relation

cursor_param: c_int

name of referenced cursor, or NULL

Trait Implementations

impl Debug for CurrentOfExpr

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

Formats the value using the given formatter.

impl Default for CurrentOfExpr

fn default() -> Self

Returns the "default value" for a type.

impl Eq for CurrentOfExpr

impl Hash for CurrentOfExpr

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl PartialEq<CurrentOfExpr> for CurrentOfExpr

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl StructuralEq for CurrentOfExpr

impl StructuralPartialEq for CurrentOfExpr