DMS configuration for cdc with PostgreSQL as source

0

I need a configuration for DMS to always replicate the entire row when a change occurs and not just the data that has changed, which config can I use? the source database is postgresql and the task is already cdc

asked 4 months ago305 views
1 Answer
2

Hi,

My understanding is that only changes can be propagated by DMS. Mostly because it uses the rdbms logs to capture those changes and those logs do not contain full rows but only delta.

Nonetheless, you can achieve what you want by using a sql trigger: https://www.postgresql.org/docs/current/sql-createtrigger.html

The idea is the following; the trigger with fire on any change on the row brought by a DMS change. Then this trigger selects in full (i.e. all columns as neeed) the row as change is applied. This trigger then "pushes" the full row whenever you need: write it in another table, steams it outside of pg, etc.

Hope it helps!

Didier

profile pictureAWS
EXPERT
answered 4 months ago
profile picture
EXPERT
reviewed 4 months ago
  • but apparently when using MySQL as source there is a configuration for this in the DMS it would be (ndb_log_updated_only = OFF), is there really nothing to be done in the DMS itself?

You are not logged in. Log in to post an answer.

A good answer clearly answers the question and provides constructive feedback and encourages professional growth in the question asker.

Guidelines for Answering Questions