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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-4555) Expand SYSCS_IMPORT_TABLE to accept CSV file with header lines
Date Thu, 21 Jul 2016 00:37:20 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15386898#comment-15386898
] 

ASF subversion and git services commented on DERBY-4555:
--------------------------------------------------------

Commit 1753624 from [~bryanpendleton] in branch 'docs/trunk'
[ https://svn.apache.org/r1753624 ]

DERBY-4555: Expand SYSCS_IMPORT_TABLE to accept CSV file with header lines
DERBY-6895: Document new system procedures

This patch was contributed by Danoja Dias (danojadias at gmail dot com)

This patch adds two sections to the Reference Manual describing the new
SYSCS_UTIL.SYSCS_IMPORT_DATA_BULK and  SYSCS_UTIL.SYSCS_IMPORT_TABLE_BULK
system procedures.

It also makes small clarifying changes to the documentation of the
existing SYSCS_UTIL.SYSCS_IMPORT_DATA and
SYSCS_UTIL.SYSCS_IMPORT_DATA_LOBS_FROM_EXTFILE system procedures.

> Expand SYSCS_IMPORT_TABLE to accept CSV file with header lines
> --------------------------------------------------------------
>
>                 Key: DERBY-4555
>                 URL: https://issues.apache.org/jira/browse/DERBY-4555
>             Project: Derby
>          Issue Type: Improvement
>          Components: Miscellaneous
>            Reporter: Yair Lenga
>            Assignee: Danoja Dias
>         Attachments: NoVarargs.diff, Varargs.diff, addNewSystemProcedureWithTest.diff,
addNewSystemProcedureWithTest_1.diff, addNewSystemProcedure_1.diff, gotException.diff, hardCoded.diff,
latest.diff, noHeaderLines.csv, petlist.csv, petlist.csv, petlist.csv, repro.java, repro.java,
repro.java, skipHeaders.diff
>
>
> The SYSCS_IMPORT_TABLE (and SYSCS_IMPORT_DATA) function allow import of data from external
resources. In general, they can process CSV files that created with various tools - with one
exception: the header line.
> While there is no accepted standard, most tools will include a header line in the CSV
file with column names. This convention is supported in Excel and many other tools.
> My Request: extend the SYSCS_IMPORT_TABLe and SYSCS_IMPORT_DATA (and other related procedures)
to include an extra indicator for the number of header lines to be ignored.
> As an extra bonus it will be help is the SYSCS_IMPORT_DATA will accept column names (instead
of column indexes) in the 'COLUMNINDEXES' arguments. E.g., it should be possible to indicate
COLUMNINDEXES of '1,3,sales,5,'. This feature will make it significantly easier to handle
cases where the external input files is extended to include additional columns.



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