zliucd opened a new issue, #41858: URL: https://github.com/apache/arrow/issues/41858
### Describe the usage question you have. Please include as many useful details as possible. Hi, It's possible to write multiple tables in a single parquet by appending each rows from individual parquet? All tables read from parquets have same columns. This functionality is similar to Python ```dataframe.concat([df1, df2])```. For example: ``` table1 Name Age Jim 36 Bill 30 table2 Name Age Sam 28 Joe 30 ``` The concatenated table and parquet file should be: ``` Name Age Jim 36 Bill 30 Sam 28 Joe 30 ``` We can concatenate tables using ```auto con_tables = arrow::ConcatenateTables```, but it's not possible to write ```con_tables``` using ```parquet::arrow::WriteTable()```. The first param of WriteTable() is a single ```arrow::Table```. This post shows how to merge tables by appending columns, but my context is appending rows. https://stackoverflow.com/questions/71183352/merging-tables-in-apache-arrow Thanks. ### Component(s) C++ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
