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Posted to dev@hive.apache.org by "Ning Zhang (JIRA)" <ji...@apache.org> on 2010/04/01 01:02:27 UTC
[jira] Updated: (HIVE-1002) multi-partition inserts
[ https://issues.apache.org/jira/browse/HIVE-1002?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ning Zhang updated HIVE-1002:
-----------------------------
Attachment: HIVE-1002.patch
Uploading HIVE-1002.patch for inserting to dynamic partitions. Some examples are:
INSERT OVERWRITE TABLE T PARTITION (ds='2010-03-31', hr) select key, value, hr from srcpart where ds is not null and hr is not null;
FROM srcpart
INSERT OVERWRITE TABLE T partition(ds='2010-03-31', hr) select key, value, hr where hr < 24
INSERT OVERWRITE TABLE T partition(ds='2010-03-31', hr = 'invalid') select key, value, hr where hr >= 24;
More examples can be found in the .q files in the patch.
> multi-partition inserts
> -----------------------
>
> Key: HIVE-1002
> URL: https://issues.apache.org/jira/browse/HIVE-1002
> Project: Hadoop Hive
> Issue Type: New Feature
> Reporter: Zheng Shao
> Assignee: Ning Zhang
> Attachments: HIVE-1002.patch
>
>
> We should allow queries like this into a partitioned table:
> {code}
> CREATE TABLE (a STRING, b STRING, c STRING)
> PARTITIONED BY (ds STRING, ts STRING);
> INSERT OVERWRITE TABLE x PARTITION (ds = '2009-12-12')
> SELECT a, b, c, ts FROM xxx;
> {code}
> Basically, allowing users to overwrite multiple partitions at a time.
> The partition values specified in PARTITION part (if any) should be a prefix of the partition keys.
> The rest of the partition keys goes to the end of the SELECT expression list.
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