Hi All, We use DataImportHandler to import data from Redshift. We want to overwrite some 250M existing records (that has around 350 columns) while retaining the field value of only one column in those 250M records. The reason is, that one column is a multi-valued and requires a costly query to build that values again.
I learned about Transformers, I am not sure if it is possible to get the old document value during that process. Any help would be appreciated. -- Regards, Selvam
