# How to create a flow to use duckdb to read and write parquate file in a flow

**URL:** <https://discourse.nodered.org/t/how-to-create-a-flow-to-use-duckdb-to-read-and-write-parquate-file-in-a-flow/73821>\
**Category:** General\
**Created:** [17 January 2023 16:30 UTC](https://discourse.nodered.org/t/how-to-create-a-flow-to-use-duckdb-to-read-and-write-parquate-file-in-a-flow/73821 "2023-01-17T16:30:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Manish131rai](https://avatars.discourse-cdn.com/v4/letter/m/87869e/32.png) [@Manish131rai](https://discourse.nodered.org/u/Manish131rai)\
**Post date:** [17 January 2023 16:30 UTC](https://discourse.nodered.org/t/how-to-create-a-flow-to-use-duckdb-to-read-and-write-parquate-file-in-a-flow/73821/1 "2023-01-17T16:30:49Z")

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iam working on a flow where data from the api should be recorded in a parquate file and then it should be displayed on a dashboard by reading the parquate file through duckdb.  
so far iam able to display the data on the dashboard directly through api but now i have to append the data how should i do it.

 ![Screenshot (15)](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/4/0/40eed6d0d9a7d6e9e424aae045addcf6d769ba90.png)

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [18 March 2023 16:31 UTC](https://discourse.nodered.org/t/how-to-create-a-flow-to-use-duckdb-to-read-and-write-parquate-file-in-a-flow/73821/2 "2023-03-18T16:31:15Z")

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