示例#1
0
文件: datum.go 项目: yangxuanjia/tidb
// ConvertDatumToDecimal converts datum to decimal.
func ConvertDatumToDecimal(d Datum) (*mysql.MyDecimal, error) {
	dec := new(mysql.MyDecimal)
	var err error
	switch d.Kind() {
	case KindInt64:
		dec.FromInt(d.GetInt64())
	case KindUint64:
		dec.FromUint(d.GetUint64())
	case KindFloat32:
		err = dec.FromFloat64(float64(d.GetFloat32()))
	case KindFloat64:
		err = dec.FromFloat64(d.GetFloat64())
	case KindString:
		err = dec.FromString(d.GetBytes())
	case KindMysqlDecimal:
		*dec = *d.GetMysqlDecimal()
	case KindMysqlHex:
		dec.FromInt(d.GetMysqlHex().Value)
	case KindMysqlBit:
		dec.FromUint(d.GetMysqlBit().Value)
	case KindMysqlEnum:
		dec.FromUint(d.GetMysqlEnum().Value)
	case KindMysqlSet:
		dec.FromUint(d.GetMysqlSet().Value)
	default:
		err = fmt.Errorf("can't convert %v to decimal", d.GetValue())
	}
	return dec, err
}