parent_schema is required for Xugu package members

Error message

parent_schema is required for Xugu package members

What it means

This error is returned by completionAssistantSearchPackageMembers when neither ParentSchema nor Schema is provided. The driver needs a schema to look up the package specification (xuguPackageSpec) for member completion.

Solutions

Set ParentSchema (or fall back to Schema) in the completion request
Populate the request schema from the session's current database/schema before dispatching
Have the client always send schema context for package member searches

Example fix

// before
req := completionAssistantRequest{ParentName: "MYPKG"} // no schema
// after
req := completionAssistantRequest{ParentName: "MYPKG", ParentSchema: currentSchema}
searchPackageMembers(req)

Defensive patterns

Strategy: validation

Validate before calling

schema := strings.TrimSpace(req.ParentSchema)
if schema == "" {
    schema = strings.TrimSpace(req.Schema)
}
if schema == "" {
    schema = session.CurrentSchema // fallback before dispatch
}

Type guard

func hasPackageSchema(req completionAssistantRequest) bool {
    return strings.TrimSpace(req.ParentSchema) != "" || strings.TrimSpace(req.Schema) != ""
}

Try / catch

if !hasPackageSchema(request) {
    request.ParentSchema = currentSchema
}
resp, err := s.completionAssistantSearchPackageMembers(request)
if err != nil {
    return completionAssistantResponse{}, err
}

Prevention

Always populate ParentSchema or Schema in completion requests
Propagate the session's current schema into completion request payloads

When it happens

Trigger: Calling package member completion with an empty ParentName-adjacent schema: both request.ParentSchema and request.Schema are empty or whitespace.

Common situations: Completion clients omitting schema context because the connection's current schema wasn't propagated into the request payload.

Understand the failure class

Background: "missing required argument" and "the following required arguments were not provided": what required-argument errors mean and how to fix them — this error's family across 20 libraries.

Related errors

AI-assisted analysis of t8y2/dbx@c0390bff16 (2026-09-05). Data as JSON: /api/errors/f06a8723b6d641cf. Report an issue: GitHub.

Appendix: source

Thrown at agents/drivers/xugu/package_members.go:47

type xuguPackageMember struct {
	Name       string
	Kind       string
	Signature  string
	ReturnType string
}

func (s *server) completionAssistantSearchPackageMembers(request completionAssistantRequest) (completionAssistantResponse, error) {
	parentName := strings.TrimSpace(request.ParentName)
	if parentName == "" || !xuguCompletionRequestsRoutines(request.ObjectKinds) {
		return completionAssistantResponse{}, errors.New("completion assistant search is not supported for this request")
	}
	parentSchema := strings.TrimSpace(request.ParentSchema)
	if parentSchema == "" {
		parentSchema = strings.TrimSpace(request.Schema)
	}
	if parentSchema == "" {
		return completionAssistantResponse{}, errors.New("parent_schema is required for Xugu package members")
	}

	spec, err := s.xuguPackageSpec(parentSchema, parentName)
	if err != nil {
		return completionAssistantResponse{}, err
	}
	members := parseXuguPackageMembers(spec)
	allowedKinds := xuguCompletionRoutineKinds(request.ObjectKinds)
	filtered := make([]xuguPackageMember, 0, len(members))
	for _, member := range members {
		if !allowedKinds[member.Kind] || !xuguCompletionNameMatches(member.Name, request) {
			continue
		}
		filtered = append(filtered, member)
	}

	limit := request.MaxResults
	if limit <= 0 {

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