Method Zero

server/types/type.go:1074–1115

Zero implements the types.ExtendedType interface.

()

// Zero implements the types.ExtendedType interface.
func (t *DoltgresType) Zero() interface{} {
	// TODO: need better way to get accurate result
	switch t.TypCategory {
	case TypeCategory_ArrayTypes:
		return []any{}
	case TypeCategory_BooleanTypes:
		return false
	case TypeCategory_CompositeTypes, TypeCategory_EnumTypes, TypeCategory_GeometricTypes, TypeCategory_NetworkAddressTypes,
		TypeCategory_RangeTypes, TypeCategory_PseudoTypes, TypeCategory_UserDefinedTypes, TypeCategory_BitStringTypes,
		TypeCategory_InternalUseTypes:
		return any(nil)
	case TypeCategory_DateTimeTypes:
		return time.Time{}
	case TypeCategory_NumericTypes:
		switch t.ID.TypeName() {
		case "float4":
			return float32(0)
		case "float8":
			return float64(0)
		case "int2":
			return int16(0)
		case "int4":
			return int32(0)
		case "int8":
			return int64(0)
		case "numeric":
			return apd.New(0, 0)
		case "oid", "regclass", "regproc", "regtype":
			return id.Null
		default:
			// TODO
			return int64(0)
		}
	case TypeCategory_StringTypes, TypeCategory_UnknownTypes:
		return ""
	case TypeCategory_TimespanTypes:
		return duration.MakeDuration(0, 0, 0)
	default:
		// shouldn't happen
		return any(nil)
	}
}

// SerializeValue implements the types.ExtendedType interface.
func (t *DoltgresType) SerializeValue(ctx context.Context, val any) ([]byte, error) {