[jira] [Comment Edited] (SQOOP-3186) Add Sqoop1 (import + --incremental + --check-column) support for functions/expressions

["Eric Lin (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SQOOP-3186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16102926#comment-16102926 ] 

Eric Lin edited comment on SQOOP-3186 at 7/27/17 8:32 AM:
----------------------------------------------------------

First iteration, added {code}--check-column-expr{code} parameter to support this feature, as {code}--check-column{code} is still need to determined column data type and it is not easy to extract column name from the function/expression.

Suggestions welcome.


was (Author: ericlin):
First iteration, added "--check-column-expr" parameter to support this feature, as "--check-column" is still need to determined column data type and it is not easy to extract column name from the function/expression.

Suggestions welcome.

> Add Sqoop1 (import + --incremental + --check-column) support for functions/expressions
> --------------------------------------------------------------------------------------
>
>                 Key: SQOOP-3186
>                 URL: https://issues.apache.org/jira/browse/SQOOP-3186
>             Project: Sqoop
>          Issue Type: Improvement
>            Reporter: Markus Kemper
>            Assignee: Eric Lin
>         Attachments: SQOOP-3186.patch
>
>
> Add Sqoop1 (import + --incremental + --check-column) support for functions/expressions, for example:
> *Example*
> {noformat}
> sqoop import \
> --connect $MYCONN --username $MYUSER --password $MYPSWD \
> --table T1 --target-dir /path/directory --merge-key C1 \
> --incremental lastmodified  --last-value '2017-01-01 00:00:00.0' \
> --check-column nvl(C4,to_date('2017-01-01 00:00:00')
> {noformat}



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