9107f77f15
### What changes were proposed in this pull request?
1. Rewrite DateTimeUtils methods `getHours()`, `getMinutes()`, `getSeconds()`, `getSecondsWithFraction()`, `getMilliseconds()` and `getMicroseconds()` using Java 8 time APIs. This will automatically switch the `Hour`, `Minute`, `Second` and `DatePart` expressions on Proleptic Gregorian calendar.
2. Remove unused methods and constant of DateTimeUtils - `to2001`, `YearZero `, `toYearZero` and `absoluteMicroSecond()`.
3. Remove unused value `timeZone` from `TimeZoneAwareExpression` since all expressions have been migrated to Java 8 time API, and legacy instance of `TimeZone` is not needed any more.
4. Change signatures of modified DateTimeUtils methods, and pass `ZoneId` instead of `TimeZone`. This will allow to avoid unnecessary conversions `TimeZone` -> `String` -> `ZoneId`.
5. Modify tests in `DateTimeUtilsSuite` and in `DateExpressionsSuite` to pass `ZoneId` instead of `TimeZone`. Correct the tests, to pass tested zone id instead of None.
### Why are the changes needed?
The changes fix the issue of wrong results returned by the `hour()`, `minute()`, `second()`, `date_part('millisecond', ...)` and `date_part('microsecond', ....)`, see example in [SPARK-30843](https://issues.apache.org/jira/browse/SPARK-30843).
### Does this PR introduce any user-facing change?
Yes. After the changes, the results of examples from SPARK-30843:
```sql
spark-sql> select hour(timestamp '0010-01-01 00:00:00');
0
spark-sql> select minute(timestamp '0010-01-01 00:00:00');
0
spark-sql> select second(timestamp '0010-01-01 00:00:00');
0
spark-sql> select date_part('milliseconds', timestamp '0010-01-01 00:00:00');
0.000
spark-sql> select date_part('microseconds', timestamp '0010-01-01 00:00:00');
0
```
### How was this patch tested?
- By existing test suites `DateTimeUtilsSuite`, `DateExpressionsSuite` and `DateFunctionsSuite`.
- Add new tests to `DateExpressionsSuite` and `DateTimeUtilsSuite` for 10 year, like:
```scala
input = date(10, 1, 1, 0, 0, 0, 0, zonePST)
assert(getHours(input, zonePST) === 0)
```
- Re-run `DateTimeBenchmark` using Amazon EC2.
| Item | Description |
| ---- | ----|
| Region | us-west-2 (Oregon) |
| Instance | r3.xlarge |
| AMI | ami-06f2f779464715dc5 (ubuntu/images/hvm-ssd/ubuntu-bionic-18.04-amd64-server-20190722.1) |
| Java | OpenJDK8/11 |
Closes #27596 from MaxGekk/localtimestamp-greg-cal.
Lead-authored-by: Maxim Gekk <max.gekk@gmail.com>
Co-authored-by: Max Gekk <max.gekk@gmail.com>
Co-authored-by: Ubuntu <ubuntu@ip-172-31-1-30.us-west-2.compute.internal>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
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Extract components
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OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
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cast to timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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cast to timestamp wholestage off 408 445 53 24.5 40.8 1.0X
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cast to timestamp wholestage on 401 453 63 24.9 40.1 1.0X
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year of timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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year of timestamp wholestage off 1197 1246 69 8.4 119.7 1.0X
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year of timestamp wholestage on 1111 1123 10 9.0 111.1 1.1X
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quarter of timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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quarter of timestamp wholestage off 1451 1462 16 6.9 145.1 1.0X
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quarter of timestamp wholestage on 1409 1424 13 7.1 140.9 1.0X
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month of timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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month of timestamp wholestage off 1106 1109 3 9.0 110.6 1.0X
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month of timestamp wholestage on 1092 1095 4 9.2 109.2 1.0X
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Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
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weekofyear of timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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weekofyear of timestamp wholestage off 1675 1677 3 6.0 167.5 1.0X
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weekofyear of timestamp wholestage on 1616 1625 7 6.2 161.6 1.0X
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Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
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day of timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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day of timestamp wholestage off 1111 1115 6 9.0 111.1 1.0X
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day of timestamp wholestage on 1090 1098 10 9.2 109.0 1.0X
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dayofyear of timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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dayofyear of timestamp wholestage off 1162 1167 7 8.6 116.2 1.0X
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dayofyear of timestamp wholestage on 1136 1142 6 8.8 113.6 1.0X
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Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
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dayofmonth of timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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dayofmonth of timestamp wholestage off 1102 1107 7 9.1 110.2 1.0X
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dayofmonth of timestamp wholestage on 1092 1111 16 9.2 109.2 1.0X
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Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
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dayofweek of timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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dayofweek of timestamp wholestage off 1254 1260 9 8.0 125.4 1.0X
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dayofweek of timestamp wholestage on 1264 1269 7 7.9 126.4 1.0X
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weekday of timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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weekday of timestamp wholestage off 1211 1215 5 8.3 121.1 1.0X
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weekday of timestamp wholestage on 1197 1206 12 8.4 119.7 1.0X
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hour of timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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hour of timestamp wholestage off 899 904 6 11.1 89.9 1.0X
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hour of timestamp wholestage on 823 827 3 12.2 82.3 1.1X
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minute of timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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minute of timestamp wholestage off 906 923 24 11.0 90.6 1.0X
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minute of timestamp wholestage on 821 830 13 12.2 82.1 1.1X
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second of timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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second of timestamp wholestage off 902 908 7 11.1 90.2 1.0X
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second of timestamp wholestage on 823 833 9 12.2 82.3 1.1X
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================================================================================================
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Current date and time
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current_date: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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current_date wholestage off 300 301 2 33.3 30.0 1.0X
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current_date wholestage on 309 312 3 32.4 30.9 1.0X
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current_timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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current_timestamp wholestage off 303 337 47 33.0 30.3 1.0X
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current_timestamp wholestage on 320 448 160 31.3 32.0 0.9X
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================================================================================================
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Date arithmetic
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cast to date: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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cast to date wholestage off 910 912 2 11.0 91.0 1.0X
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cast to date wholestage on 930 937 6 10.8 93.0 1.0X
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Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
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last_day: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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last_day wholestage off 1122 1123 1 8.9 112.2 1.0X
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last_day wholestage on 1100 1109 6 9.1 110.0 1.0X
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next_day: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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next_day wholestage off 991 992 2 10.1 99.1 1.0X
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next_day wholestage on 981 984 4 10.2 98.1 1.0X
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date_add: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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date_add wholestage off 927 927 1 10.8 92.7 1.0X
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date_add wholestage on 908 915 12 11.0 90.8 1.0X
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date_sub: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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date_sub wholestage off 921 921 0 10.9 92.1 1.0X
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date_sub wholestage on 907 910 4 11.0 90.7 1.0X
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add_months: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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add_months wholestage off 1255 1257 3 8.0 125.5 1.0X
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add_months wholestage on 1242 1259 13 8.1 124.2 1.0X
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================================================================================================
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Formatting dates
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================================================================================================
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Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
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format date: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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format date wholestage off 4912 4968 79 2.0 491.2 1.0X
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format date wholestage on 4734 4757 16 2.1 473.4 1.0X
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================================================================================================
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Formatting timestamps
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================================================================================================
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Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
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from_unixtime: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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from_unixtime wholestage off 8692 8701 13 1.2 869.2 1.0X
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from_unixtime wholestage on 8717 8730 14 1.1 871.7 1.0X
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================================================================================================
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Convert timestamps
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from_utc_timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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from_utc_timestamp wholestage off 1339 1348 12 7.5 133.9 1.0X
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from_utc_timestamp wholestage on 1398 1404 6 7.2 139.8 1.0X
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Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
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to_utc_timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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to_utc_timestamp wholestage off 1936 1951 21 5.2 193.6 1.0X
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to_utc_timestamp wholestage on 1783 1792 8 5.6 178.3 1.1X
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================================================================================================
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Intervals
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================================================================================================
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cast interval: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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cast interval wholestage off 350 353 4 28.6 35.0 1.0X
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cast interval wholestage on 348 355 4 28.7 34.8 1.0X
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Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
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datediff: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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datediff wholestage off 1679 1680 2 6.0 167.9 1.0X
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datediff wholestage on 1674 1687 11 6.0 167.4 1.0X
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months_between: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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months_between wholestage off 4116 4120 5 2.4 411.6 1.0X
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months_between wholestage on 4092 4140 90 2.4 409.2 1.0X
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Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
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window: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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window wholestage off 2236 2396 227 0.4 2235.9 1.0X
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window wholestage on 47208 47298 171 0.0 47208.3 0.0X
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================================================================================================
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Truncation
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================================================================================================
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OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
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date_trunc YEAR: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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date_trunc YEAR wholestage off 1939 1947 11 5.2 193.9 1.0X
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date_trunc YEAR wholestage on 1890 1899 6 5.3 189.0 1.0X
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date_trunc YYYY: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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date_trunc YYYY wholestage off 1947 1950 5 5.1 194.7 1.0X
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date_trunc YYYY wholestage on 1903 1909 7 5.3 190.3 1.0X
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date_trunc YY: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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date_trunc YY wholestage off 1941 1952 15 5.2 194.1 1.0X
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date_trunc YY wholestage on 1895 1907 10 5.3 189.5 1.0X
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date_trunc MON: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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date_trunc MON wholestage off 1912 1934 30 5.2 191.2 1.0X
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date_trunc MON wholestage on 1899 1923 20 5.3 189.9 1.0X
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date_trunc MONTH: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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date_trunc MONTH wholestage off 1923 1931 11 5.2 192.3 1.0X
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date_trunc MONTH wholestage on 1897 1908 10 5.3 189.7 1.0X
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date_trunc MM: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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date_trunc MM wholestage off 1923 1924 2 5.2 192.3 1.0X
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date_trunc MM wholestage on 1902 1911 10 5.3 190.2 1.0X
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Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
date_trunc DAY: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
date_trunc DAY wholestage off 1713 1717 6 5.8 171.3 1.0X
|
|
date_trunc DAY wholestage on 1693 1699 4 5.9 169.3 1.0X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
date_trunc DD: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
date_trunc DD wholestage off 1711 1712 1 5.8 171.1 1.0X
|
|
date_trunc DD wholestage on 1691 1697 12 5.9 169.1 1.0X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
date_trunc HOUR: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
date_trunc HOUR wholestage off 1715 1715 0 5.8 171.5 1.0X
|
|
date_trunc HOUR wholestage on 1699 1705 4 5.9 169.9 1.0X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
date_trunc MINUTE: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
date_trunc MINUTE wholestage off 520 524 7 19.2 52.0 1.0X
|
|
date_trunc MINUTE wholestage on 500 505 6 20.0 50.0 1.0X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
date_trunc SECOND: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
date_trunc SECOND wholestage off 501 502 1 20.0 50.1 1.0X
|
|
date_trunc SECOND wholestage on 497 501 3 20.1 49.7 1.0X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
date_trunc WEEK: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
date_trunc WEEK wholestage off 1839 1840 1 5.4 183.9 1.0X
|
|
date_trunc WEEK wholestage on 1820 1827 8 5.5 182.0 1.0X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
date_trunc QUARTER: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
date_trunc QUARTER wholestage off 2624 2624 0 3.8 262.4 1.0X
|
|
date_trunc QUARTER wholestage on 2573 2583 7 3.9 257.3 1.0X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
trunc year: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
trunc year wholestage off 315 317 3 31.8 31.5 1.0X
|
|
trunc year wholestage on 314 328 16 31.9 31.4 1.0X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
trunc yyyy: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
trunc yyyy wholestage off 314 317 4 31.8 31.4 1.0X
|
|
trunc yyyy wholestage on 312 315 3 32.1 31.2 1.0X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
trunc yy: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
trunc yy wholestage off 314 315 0 31.8 31.4 1.0X
|
|
trunc yy wholestage on 312 317 6 32.0 31.2 1.0X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
trunc mon: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
trunc mon wholestage off 314 315 1 31.8 31.4 1.0X
|
|
trunc mon wholestage on 310 314 4 32.2 31.0 1.0X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
trunc month: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
trunc month wholestage off 313 314 2 32.0 31.3 1.0X
|
|
trunc month wholestage on 312 316 6 32.1 31.2 1.0X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
trunc mm: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
trunc mm wholestage off 312 313 1 32.0 31.2 1.0X
|
|
trunc mm wholestage on 309 312 3 32.3 30.9 1.0X
|
|
|
|
|
|
================================================================================================
|
|
Parsing
|
|
================================================================================================
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
to timestamp str: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
to timestamp str wholestage off 170 173 5 5.9 170.0 1.0X
|
|
to timestamp str wholestage on 156 161 5 6.4 155.9 1.1X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
to_timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
to_timestamp wholestage off 1741 1746 8 0.6 1740.7 1.0X
|
|
to_timestamp wholestage on 1887 1896 11 0.5 1886.6 0.9X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
to_unix_timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
to_unix_timestamp wholestage off 1928 1934 9 0.5 1927.7 1.0X
|
|
to_unix_timestamp wholestage on 1857 1862 3 0.5 1857.5 1.0X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
to date str: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
to date str wholestage off 161 162 0 6.2 161.5 1.0X
|
|
to date str wholestage on 151 156 3 6.6 151.4 1.1X
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
to_date: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
to_date wholestage off 2513 2519 8 0.4 2513.1 1.0X
|
|
to_date wholestage on 2484 2500 15 0.4 2484.2 1.0X
|
|
|
|
|
|
================================================================================================
|
|
Conversion from/to external types
|
|
================================================================================================
|
|
|
|
OpenJDK 64-Bit Server VM 11.0.6+10-post-Ubuntu-1ubuntu118.04.1 on Linux 4.15.0-1044-aws
|
|
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
|
|
To/from java.sql.Timestamp: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
|
|
------------------------------------------------------------------------------------------------------------------------
|
|
From java.sql.Timestamp 340 347 8 14.7 68.0 1.0X
|
|
Collect longs 1170 1217 42 4.3 234.1 0.3X
|
|
Collect timestamps 1771 2267 836 2.8 354.1 0.2X
|
|
|
|
|