Function NewUnresolvedObjectName

pkg/sql/sem/tree/name_part.go:230–255

NewUnresolvedObjectName creates an unresolved object name, verifying that it is well-formed.

(
	numParts int, parts [3]string, annotationIdx AnnotationIdx,
)

// NewUnresolvedObjectName creates an unresolved object name, verifying that it
// is well-formed.
func NewUnresolvedObjectName(
	numParts int, parts [3]string, annotationIdx AnnotationIdx,
) (*UnresolvedObjectName, error) {
	u := &UnresolvedObjectName{
		NumParts:      numParts,
		Parts:         parts,
		AnnotatedNode: AnnotatedNode{AnnIdx: annotationIdx},
	}
	if u.NumParts < 1 {
		return nil, newInvTableNameError(u)
	}

	// Check that all the parts specified are not empty.
	// It's OK if the catalog name is empty.
	// We allow this in e.g. `select * from "".crdb_internal.tables`.
	lastCheck := u.NumParts
	if lastCheck > 2 {
		lastCheck = 2
	}
	for i := 0; i < lastCheck; i++ {
		if len(u.Parts[i]) == 0 {
			return nil, newInvTableNameError(u)
		}
	}
	return u, nil
}

// Resolved returns the resolved name in the annotation for this node (or nil if
// there isn't one).