jackc/pgx · error

No type names were supplied.

Error message

No type names were supplied.

What it means

Error "No type names were supplied." thrown in jackc/pgx.

Source

Thrown at derived_types.go:172

    ORDER BY MAX(depth) desc, typname;`)
	return strings.Join(parts, "")
}

type derivedTypeInfo struct {
	Oid, Typbasetype, Typelem, Rngsubtype, Rngtypid uint32
	TypeName, Typtype, NspName                      string
	Attnames                                        []string
	Atttypids                                       []uint32
}

// LoadTypes performs a single (complex) query, returning all the required
// information to register the named types, as well as any other types directly
// or indirectly required to complete the registration.
// The result of this call can be passed into RegisterTypes to complete the process.
func (c *Conn) LoadTypes(ctx context.Context, typeNames []string) ([]*pgtype.Type, error) {
	m := c.TypeMap()
	if len(typeNames) == 0 {
		return nil, fmt.Errorf("No type names were supplied.")
	}

	// Disregard server version errors. This will result in
	// the SQL not support recent structures such as multirange
	serverVersion, _ := serverVersion(c)
	sql := buildLoadDerivedTypesSQL(serverVersion, typeNames)
	rows, err := c.Query(ctx, sql, QueryResultFormats{TextFormatCode}, typeNames)
	if err != nil {
		return nil, fmt.Errorf("While generating load types query: %w", err)
	}
	defer rows.Close()
	result := make([]*pgtype.Type, 0, 100)
	for rows.Next() {
		ti := derivedTypeInfo{}
		err = rows.Scan(&ti.TypeName, &ti.NspName, &ti.Typtype, &ti.Typbasetype, &ti.Typelem, &ti.Oid, &ti.Rngtypid, &ti.Rngsubtype, &ti.Attnames, &ti.Atttypids)
		if err != nil {
			return nil, fmt.Errorf("While scanning type information: %w", err)
		}

View on GitHub (pinned to ec1a0befd2)

When it happens

Trigger: Thrown at derived_types.go:172 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of jackc/pgx@ec1a0befd2 (2026-08-04). Data as JSON: /data/errors/7950d9219d5bfeee.json. Report an issue: GitHub.