wondering if it works for kafka streaming ingestion:

"ingestionConfig": {
      "transformConfigs": [
        {
          "columnName": "brand_name_facility_id_tuple",
          "transformFunction": "concat(brand_name, facility_id, ':')"
        }
      ]
    },

not sure if the

concat

works here. the examples here are mostly groovy function: https://docs.pinot.apache.org/developers/advanced/ingestion-level-transformations#column-transformation

yup this should work. cc @User seems docs are incomplete or causing some confusion?

Thanks - lemme add some more examples

got it. thanks @User and @User

This has been deprecated, so recommend using the table config version

gotcha, thanks a lot.