RisingWave Community - Do I need to reset the offset or drop and re-add the table after adding a column in Postgres CDC source?

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Do I need to reset the offset or drop and re-add the table after adding a column in Postgres CDC source?

I have added a Postgres CDC source and then added a column to the table. The data for the new column is not populating. Do I need to reset the offset in the internal table or drop and re-add the table altogether?

Jesse Levier

Asked on Apr 17, 2024

After ALTER TABLE in the Postgres CDC source, the added column will be filled with null for the data already ingested into the read-write table.
For new data coming from the upstream, it will contain the value of the added column.
If you want the already ingested data to contain the value of the added column, you have to recreate the table in the read-write source.

Apr 17, 2024Edited by