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Table Names and Filters

Jitsu supports splitting events stream into different tables in DWH based on event JSON payload. It works by applying JavaScript functions to incoming JSON objects. It can select a table name or pass a constant or even filter certain events from the destination. It is configured in the destination section and each destination has its own rules.

See also JavaScript Transform for full event transformation using JavaScript

Table Name Selection

By default table name will be events constant. It can be overridden in several ways:

Constant table name. In this case, all incoming events for destination_1 will be stored in a single table with constant name.

      table_name_template: 'constant'

Table names are based on field values.

      #tables will be created with 'event_type' names
      table_name_template: '$.event_type'

      #tables will have 'event_type_YYYY_MM' format based on 'event_type' and date
      table_name_template: '`${_.event_type}_${_._timestamp.Format("2006_01")}`'

Timestamp formatting is based on GO lang time layouts.

Events Filtering

table_name_template might be used for filtering certain events from the destination.

If table_name_template returns an empty string, null or false then the event will be skipped. Use Jitsu Template Evaluation endpoint for testing your code.

For example all pageview events might be skipped:

      table_name_template: '$.event_type=="pageview" ? "" : $.event_type' #JavaScript

Expressions might be more complex. For example, keep only conversion events (skip other) in case when a user isn't Google Analytics known user:

      table_name_template: |
            if ($.event_type == "conversion") {
                //only for conversion events
                if (!$.ids?.ga) {
                    //no ga id present
                    return $.event_type
            return ""