https://bugs.documentfoundation.org/show_bug.cgi?id=169036

            Bug ID: 169036
           Summary: Data provider DELETEROW_TRANSFORMATION is not written
                    to file
           Product: LibreOffice
           Version: 26.2.0.0 alpha0+ master
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Calc
          Assignee: [email protected]
          Reporter: [email protected]
            Blocks: 120219

Created attachment 203516
  --> https://bugs.documentfoundation.org/attachment.cgi?id=203516&action=edit
example CSV with 3 columns, label row and 100 records

Download the attached csv file to your PC.
Start a new spreadsheet. Define a database range "myImport" for range
$Sheet1.$A$2:$C$101 and make sure that "contains column labels" is unchecked
(that is in Options).
Menu > Data > Data Provider.
In that dialog do these:
* in section `Source` select the database range "myImport".
* Click on the `Browse` button and select the downloaded csv file.
* in section `Transformations` select entry `Split Column` and click on `Add`
button. You get additional fields.
* In field `Separator string` insert a pipe symbol, that is | . In field
`Column index` enter 1. Click the `Apply` button below the Preview.
* in section `Transformations` click on `Add` again to insert the next `Split
Column` transformation.
* Enter the pipe symbol in the field `Separator string` and value 2 in `Column
index` field. Click the `Apply` button below the Preview.
* In section `Transformations` select entry `Delete Rows` and click on `Add`
* In field `Lookup value` enter text `Rank`, in field `Column index` enter 1.
Click the `Apply` button.
The preview looks good. Click on OK button.

You should have got a list with 100 popular male and female English names
without header row.

Make sure you save to extended ods format.
Save the document.

Reload the document.
Your data shows the deleted row: Rank, Males, Females

Reason is, that the transformation type DELETEROW_TRANSFORMATION is not handled
in the switch in
https://opengrok.libreoffice.org/xref/core/sc/source/filter/xml/xmlexprt.cxx?r=73a6735652dc5bbb4ac51743f41bbed3fe5d1060#4212


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=120219
[Bug 120219] [META] Data provider bugs and enhancements
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