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https://issues.apache.org/jira/browse/DRILL-7139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Hou updated DRILL-7139:
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Summary: Date_add() can produce incorrect results when adding to a
timestamp (was: Date)add produces Incorrect results when adding to a timestamp)
> Date_add() can produce incorrect results when adding to a timestamp
> -------------------------------------------------------------------
>
> Key: DRILL-7139
> URL: https://issues.apache.org/jira/browse/DRILL-7139
> Project: Apache Drill
> Issue Type: Bug
> Components: Functions - Drill
> Affects Versions: 1.15.0
> Reporter: Robert Hou
> Assignee: Pritesh Maker
> Priority: Major
>
> I am using date_add() to create a sequence of timestamps:
> {noformat}
> select date_add(timestamp '1970-01-01 00:00:00',
> cast(concat('PT',{color:#f79232}107374{color},'M') as interval minute))
> timestamp_id from (values(1));
> +--------------------------+
> | timestamp_id |
> +--------------------------+
> | 1970-01-25 20:31:12.704 |
> +--------------------------+
> 1 row selected (0.121 seconds)
> {noformat}
> When I add one more, I get an older timestamp:
> {noformat}
> 0: jdbc:drill:drillbit=10.10.51.5> select date_add(timestamp '1970-01-01
> 00:00:00', cast(concat('PT',{color:#f79232}107375{color},'M') as interval
> minute)) timestamp_id from (values(1));
> +--------------------------+
> | timestamp_id |
> +--------------------------+
> | 1969-12-07 03:29:25.408 |
> +--------------------------+
> 1 row selected (0.126 seconds)
> {noformat}
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