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When using addWorksheet it simply overrides and does not preserve existing rows.
The only option I have is to copy all existing rows to new file and then append at the end. Seems inefficient for large files.
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I’m trying to append rows to an existing large excel file. But I’m not able to get existing worksheet.
When using
addWorksheet
it simply overrides and does not preserve existing rows.The only option I have is to copy all existing rows to new file and then append at the end. Seems inefficient for large files.
Any suggestions?
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