Method String

postgres/parser/types/types.go:2244–2284

String returns the name of the type, similar to the Name method. However, it expands CollatedStringFamily, ArrayFamily, and TupleFamily types to be more descriptive. TODO(andyk): It'd be nice to have this return SqlString() method output, since that is more descriptive.

()

// TODO(andyk): It'd be nice to have this return SqlString() method output,
// since that is more descriptive.
func (t *T) String() string {
	switch t.Family() {
	case CollatedStringFamily:
		if t.Locale() == "" {
			// Used in telemetry.
			return fmt.Sprintf("collated%s{*}", t.Name())
		}
		return fmt.Sprintf("collated%s{%s}", t.Name(), t.Locale())

	case ArrayFamily:
		switch t.Oid() {
		case oid.T_oidvector, oid.T_int2vector:
			return t.Name()
		}
		return t.ArrayContents().String() + "[]"

	case TupleFamily:
		var buf bytes.Buffer
		buf.WriteString("tuple")
		if len(t.TupleContents()) != 0 && !IsWildcardTupleType(t) {
			buf.WriteByte('{')
			for i, typ := range t.TupleContents() {
				if i != 0 {
					buf.WriteString(", ")
				}
				buf.WriteString(typ.String())
				if t.TupleLabels() != nil {
					buf.WriteString(" AS ")
					buf.WriteString(t.InternalType.TupleLabels[i])
				}
			}
			buf.WriteByte('}')
		}
		return buf.String()
	case IntervalFamily, TimestampFamily, TimestampTZFamily, TimeFamily, TimeTZFamily:
		if t.InternalType.Precision > 0 || t.InternalType.TimePrecisionIsSet {
			return fmt.Sprintf("%s(%d)", t.Name(), t.Precision())
		}
	}
	return t.Name()
}

// DebugString returns a detailed dump of the type protobuf struct, suitable for
// debugging scenarios.