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https://issues.apache.org/jira/browse/SQOOP-489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13284777#comment-13284777
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Cheolsoo Park commented on SQOOP-489:
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Hi Jarcec, thank you for your kind explanation. Examples always help. :-)
{quote}
I'm concerned that we silently ignored one column in the table and replaced it
with constant value from command line – both values "1" and "4" from original
table were lost.
{quote}
I have a quick question. The case that you're describing can be reproduced even
now with '--columns B,C --hive-partition A --hive-partition-value 666', right?
In this case, we're also replacing the column A with a constant value. Are you
assuming that this is OK because the user _explicitly_ specified what he/she is
doing?
After all, what I am debating is whether or not the Hive table always has to
mirror the source table that it is importing from.
> Cannot define partition keys for Hive tables created through Sqoop
> ------------------------------------------------------------------
>
> Key: SQOOP-489
> URL: https://issues.apache.org/jira/browse/SQOOP-489
> Project: Sqoop
> Issue Type: Bug
> Affects Versions: 1.4.1-incubating
> Reporter: Kathleen Ting
> Assignee: Cheolsoo Park
> Attachments: SQOOP-489.patch
>
>
> By enabling the table option, Sqoop includes every column in the table in the
> create table query, and by enabling the hive-partition-key option, Sqoop
> blindly appends the "partitioned by" clause. Now if you specify one of
> columns in the table in the hive-partition-key, this will cause a syntax
> error in Hive.
> For example, if we have a table 'FOO' that has columns 'I' and 'J':
> sqoop create-hive-table --table FOO ...
> will generate the following Hive query:
> CREATE TABLE IF NOT EXISTS `FOO` ( `I` STRING, `J` STRING)
> Now if we add "--hive-partition-key I" to the command, Sqoop generates the
> following query:
> CREATE TABLE IF NOT EXISTS `FOO` ( `I` STRING, `J` STRING) PARTITIONED BY (I
> STRING)
> The problem is that since 'I' is defined twice (once in CRATE TABLE and once
> in PARTITIONED BY), this is a syntax error in Hive.
> This correct query would be something like:
> CREATE TABLE IF NOT EXISTS `FOO` (`J` STRING) PARTITIONED BY (I STRING)
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