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https://issues.apache.org/jira/browse/DERBY-4555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15305423#comment-15305423
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Danoja Dias commented on DERBY-4555:
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I think the type of skip should be short.
When I study the code, I found followings.
org.apache.derby.catalog.SystemProcedures.java contains the
SYSCS_IMPORT_TABLE function It calls ImportTable function in the
org.apache.derby.impl.load.Import.java .
Reading of csv file happens at readNextToken method in
org.apache.derby.impl.load.ImportReadData.java
readNextToken reads one column's value at a time.
In org.apache.derby.impl.load.ImportReadData.java the method ignoreFirstRow()
ignores the first row by looking for the record separator. It is done by
readNextToken() method.
I think we can use that mechenism for skipping the headerlines.
> 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: petlist.csv, petlist.csv, petlist.csv, repro.java
>
>
> 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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