xinyiZzz commented on code in PR #48398:
URL: https://github.com/apache/doris/pull/48398#discussion_r1972745366
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be/src/vec/data_types/data_type_time_v2.h:
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@@ -123,7 +123,9 @@ class DataTypeDateTimeV2 final : public
DataTypeNumberBase<UInt64> {
DataTypeDateTimeV2(const DataTypeDateTimeV2& rhs) : _scale(rhs._scale) {}
TypeIndex get_type_id() const override { return TypeIndex::DateTimeV2; }
TypeDescriptor get_type_as_type_descriptor() const override {
- return TypeDescriptor(TYPE_DATETIMEV2);
+ auto desc = TypeDescriptor(TYPE_DATETIMEV2);
+ desc.scale = _scale;
Review Comment:
datetime不需要 precision，datetime 的 scale 是小数位数，即微秒的部分，即`2022-01-01
01-01-01.123456` 中的 0.123456
只有 decimal 和 datetime 用到了 scale
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