Function AsDInt

pkg/sql/sem/tree/datum.go:683–691

AsDInt attempts to retrieve a DInt from an Expr, returning a DInt and a flag signifying whether the assertion was successful. The function should be used instead of direct type assertions wherever a *DInt wrapped by a *DOidWrapper is possible.

(e Expr)

// be used instead of direct type assertions wherever a *DInt wrapped by a
// *DOidWrapper is possible.
func AsDInt(e Expr) (DInt, bool) {
	switch t := e.(type) {
	case *DInt:
		return *t, true
	case *DOidWrapper:
		return AsDInt(t.Wrapped)
	}
	return 0, false
}

// MustBeDInt attempts to retrieve a DInt from an Expr, panicking if the
// assertion fails.