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Posted to issues@drill.apache.org by "Krystal (JIRA)" <ji...@apache.org> on 2016/04/16 00:11:25 UTC
[jira] [Created] (DRILL-4610) Inconsistent return type b/w date_add
& date_sub functions w/ date & interval
Krystal created DRILL-4610:
------------------------------
Summary: Inconsistent return type b/w date_add & date_sub functions w/ date & interval
Key: DRILL-4610
URL: https://issues.apache.org/jira/browse/DRILL-4610
Project: Apache Drill
Issue Type: Bug
Components: Functions - Drill
Reporter: Krystal
git.commit.id.abbrev=e4725ea
date_add(date, interval) function returns a timestamp while date_sub(date, interval) function returns a date. Some examples are:
select date_add(to_date('2017-02-01', 'YYYY-MM-dd'), interval '1' MONTH) from test_tbl limit 1;
+------------------------+
| EXPR$0 |
+------------------------+
| 2017-03-01 00:00:00.0 |
+------------------------+
select date_sub(create_date, interval '1' MONTH) from test_tbl where limit 1;
+-------------+
| EXPR$0 |
+-------------+
| 2017-03-06 |
+-------------+
select date_add(to_date('2017-02-01', 'YYYY-MM-dd'), interval '1 10:20:30' DAY to second) from test_tbl limit 1;
+------------------------+
| EXPR$0 |
+------------------------+
| 2017-02-02 10:20:30.0 |
+------------------------+
select date_sub(create_date, interval '1 10:20:30' DAY to second) from voter_parquet where voter_id=10;
+-------------+
| EXPR$0 |
+-------------+
| 2017-04-04 |
+-------------+
select date_sub(to_date('2017-02-01', 'YYYY-MM-dd'), interval '1 10:20:30' DAY to second) from test_tbl limit 1;
+-------------+
| EXPR$0 |
+-------------+
| 2017-01-30 |
+-------------+
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