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support saving interval types to tables

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This commit is contained in:
Larry Luo 2023-04-23 21:59:51 -07:00
parent 426221cadf
commit 9e1e94648e
4 changed files with 16 additions and 8 deletions
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7
docs/en/sql-reference/data-types/special-data-types/interval.md
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@ -8,10 +8,6 @@ sidebar_label: Interval
The family of data types representing time and date intervals. The resulting types of the [INTERVAL](../../../sql-reference/operators/index.md#operator-interval) operator.
:::note
`Interval` data type values can’t be stored in tables.
:::
Structure:
- Time interval as an unsigned integer value.
@ -19,6 +15,9 @@ Structure:
Supported interval types:
- `NANOSECOND`
- `MICROSECOND`
- `MILLISECOND`
- `SECOND`
- `MINUTE`
- `HOUR`

4
src/DataTypes/DataTypeInterval.h
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@ -11,9 +11,6 @@ namespace DB
*
* Mostly the same as Int64.
* But also tagged with interval kind.
*
* Intended usage is for temporary elements in expressions,
* not for storing values in tables.
*/
class DataTypeInterval final : public DataTypeNumberBase<Int64>
{
@ -34,7 +31,6 @@ public:
bool equals(const IDataType & rhs) const override;
bool isParametric() const override { return true; }
bool cannotBeStoredInTables() const override { return true; }
bool isCategorial() const override { return false; }
bool canBeInsideNullable() const override { return true; }
};

4
tests/queries/0_stateless/02724_persist_interval_type.reference Normal file
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@ -0,0 +1,4 @@
2023-01-01 00:00:01.000000001 2023-01-01 02:00:00.000000001 2023-01-01 00:00:00.000000004 1 2 0
2023-01-01 00:00:02.000000001 2023-01-01 03:00:00.000000001 2023-01-01 00:00:00.000000005 2 3 0
2023-01-01 00:00:01.000000001 2023-01-01 02:00:00.000000001 2023-01-01 00:00:00.000000004 1 2 0
2023-01-01 00:00:02.000000001 2023-01-01 03:00:00.000000001 2023-01-01 00:00:00.000000005 2 3 0

9
tests/queries/0_stateless/02724_persist_interval_type.sql Normal file
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@ -0,0 +1,9 @@
DROP TABLE IF EXISTS saved_intervals_tmp;
DROP TABLE IF EXISTS saved_intervals_mgt;
create table saved_intervals_tmp Engine=Memory as SELECT number as EventID, toIntervalSecond(number+1) as v1, toIntervalHour(number+2) as v2, toIntervalNanosecond(number+3) as v3 from numbers(2);
create table saved_intervals_mgt Engine=MergeTree() ORDER BY EventID as SELECT number as EventID, toIntervalSecond(number+1) as v1, toIntervalHour(number+2) as v2, toIntervalNanosecond(number+3) as v3 from numbers(2);
with toDateTime64('2023-01-01 00:00:00.000000001', 9, 'US/Eastern') as c select c+v1 as c_v1, c+v2 as c_v2, c+v3 as c_v3, date_diff(second, c, c_v1), date_diff(hour, c, c_v2), date_diff(second, c, c_v3) from saved_intervals_tmp;
with toDateTime64('2023-01-01 00:00:00.000000001', 9, 'US/Eastern') as c select c+v1 as c_v1, c+v2 as c_v2, c+v3 as c_v3, date_diff(second, c, c_v1), date_diff(hour, c, c_v2), date_diff(second, c, c_v3) from saved_intervals_mgt;
DROP TABLE IF EXISTS saved_intervals_tmp;
DROP TABLE IF EXISTS saved_intervals_mgt;