Serhiy Bilousov created PHOENIX-1748:
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Summary: Appling TRUNC|ROUND|FLOOR|CEIL with
DAY|HOUR|MINUTE|SECOND|MILLISECOND on TIMESTAMP should not truncate value to to
the DATE only.
Key: PHOENIX-1748
URL: https://issues.apache.org/jira/browse/PHOENIX-1748
Project: Phoenix
Issue Type: Bug
Reporter: Serhiy Bilousov
*Given* that input value is "YYYY-MM-DD HH:MM:SS.nnn" type of TIMESTAMP
(UNSIGNED_TIMESTAMP, DATE, TIME etc)
*When* applying TRUNC|ROUND|FLOOR|CEIL with DAY|HOUR|MINUTE|SECOND|MILLISECOND
*Than* result should be "YYYY-MM-DD HH:MM:SS.nnn"
But "YYYY-MM-DD" is returned instead.
Basically when I do TRUNC on timestamp I would expect it to be timestamp with
relevant parts truncated so for example I can GROUP BY on TRUNC
(timestamp,'HOUR') and have my hourly aggregation.
Here is test queries with cast(current_date() AS timestamp).
{noformat}
SELECT
dt
,TRUNC(dt,'DAY') AS trunc_day_from_dt
,TRUNC(dt,'HOUR') AS trunc_hour_from_dt
,TRUNC(dt,'MINUTE') AS trunc_min_from_dt
,TRUNC(dt,'SECOND') AS trunc_sec_from_dt
,TRUNC(dt,'MILLISECOND') AS trunc_mil_from_dt
FROM
(SELECT current_date() AS d, cast(current_date() AS timestamp) AS dt,
TO_NUMBER(current_date()) e FROM system.catalog LIMIT 1) t;
+------------------------------------------+---------------------+---------------------+---------------------+---------------------+---------------------+
| TO_TIMESTAMP('2015-03-08 09:09:11.665') | TRUNC_DAY_FROM_DT |
TRUNC_HOUR_FROM_DT | TRUNC_MIN_FROM_DT | TRUNC_SEC_FROM_DT |
TRUNC_MIL_FROM_DT |
+------------------------------------------+---------------------+---------------------+---------------------+---------------------+---------------------+
| 2015-03-08 09:09:11.665 | 2015-03-08 | 2015-03-08
| 2015-03-08 | 2015-03-08 | 2015-03-08 |
+------------------------------------------+---------------------+---------------------+---------------------+---------------------+---------------------+
1 row selected (0.066 seconds)
SELECT
dt
,ROUND(dt,'DAY') AS round_day_from_d
,ROUND(dt,'HOUR') AS round_hour_from_d
,ROUND(dt,'MINUTE') AS round_min_from_d
,ROUND(dt,'SECOND') AS round_sec_from_d
,ROUND(dt,'MILLISECOND') AS round_mil_from_d
FROM
(SELECT current_date() AS d, cast(current_date() AS timestamp) AS dt,
TO_NUMBER(current_date()) e FROM system.catalog LIMIT 1) t;
+------------------------------------------+---------------------+---------------------+---------------------+---------------------+------------------------------------------+
| TO_TIMESTAMP('2015-03-08 09:09:11.782') | ROUND_DAY_FROM_D |
ROUND_HOUR_FROM_D | ROUND_MIN_FROM_D | ROUND_SEC_FROM_D |
ROUND_MIL_FROM_D |
+------------------------------------------+---------------------+---------------------+---------------------+---------------------+------------------------------------------+
| 2015-03-08 09:09:11.782 | 2015-03-08 | 2015-03-08
| 2015-03-08 | 2015-03-08 | 2015-03-08 09:09:11.782
|
+------------------------------------------+---------------------+---------------------+---------------------+---------------------+------------------------------------------+
1 row selected (0.06 seconds)
SELECT
dt
,FLOOR(dt,'DAY') AS floor_day_from_dt
,FLOOR(dt,'HOUR') AS floor_hour_from_dt
,FLOOR(dt,'MINUTE') AS floor_min_from_dt
,FLOOR(dt,'SECOND') AS floor_sec_from_dt
,FLOOR(dt,'MILLISECOND') AS floor_mil_from_dt
FROM
(SELECT current_date() AS d, cast(current_date() AS timestamp) AS dt,
TO_NUMBER(current_date()) e FROM system.catalog LIMIT 1) t;
+------------------------------------------+---------------------+---------------------+---------------------+---------------------+---------------------+
| TO_TIMESTAMP('2015-03-08 09:09:11.895') | FLOOR_DAY_FROM_DT |
FLOOR_HOUR_FROM_DT | FLOOR_MIN_FROM_DT | FLOOR_SEC_FROM_DT |
FLOOR_MIL_FROM_DT |
+------------------------------------------+---------------------+---------------------+---------------------+---------------------+---------------------+
| 2015-03-08 09:09:11.895 | 2015-03-08 | 2015-03-08
| 2015-03-08 | 2015-03-08 | 2015-03-08 |
+------------------------------------------+---------------------+---------------------+---------------------+---------------------+---------------------+
1 row selected (0.059 seconds)
SELECT
dt
,CEIL(dt,'DAY') AS ceil_day_from_dt
,CEIL(dt,'HOUR') AS ceil_hour_from_dt
,CEIL(dt,'MINUTE') AS ceil_min_from_dt
,CEIL(dt,'SECOND') AS ceil_sec_from_dt
,CEIL(dt,'MILLISECOND') AS ceil_mil_from_dt
FROM
(SELECT current_date() AS d, cast(current_date() AS timestamp) AS dt,
TO_NUMBER(current_date()) e FROM system.catalog LIMIT 1) t;
+------------------------------------------+---------------------+---------------------+---------------------+---------------------+------------------------------------------+
| TO_TIMESTAMP('2015-03-08 09:09:12.009') | CEIL_DAY_FROM_DT |
CEIL_HOUR_FROM_DT | CEIL_MIN_FROM_DT | CEIL_SEC_FROM_DT |
CEIL_MIL_FROM_DT |
+------------------------------------------+---------------------+---------------------+---------------------+---------------------+------------------------------------------+
| 2015-03-08 09:09:12.009 | 2015-03-09 | 2015-03-08
| 2015-03-08 | 2015-03-08 | 2015-03-08 09:09:12.009
|
+------------------------------------------+---------------------+---------------------+---------------------+---------------------+------------------------------------------+
1 row selected (0.061 seconds)
{noformat}
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