How to capture date difference with liquid ml

[jonathan_graber]

I am attempting to use Liquid ML to adjust a table i am using for a look depending on the date range a user selects.  However, I am getting a “unknown variable datediff” when I try to use date diff.  Is there someway I can get around this?

 

  sql_table_name:

{% if   DATEDIFF(
              IFNULL(
                            DATE({% date_end anchor_date_range %})
                            --, current_date)
                            , DATE(current_timestamp(),cs.timezone))
                            ,
                            IFNULL(
                            DATE({% date_start anchor_date_range %})
                            , DATE('2012-10-01'))

                            ,{% parameter anchor_breakdown_type %}) = 30 %}

      looker.aggregated                   


    {% else %}
    looker.detailed
    {% endif %} ;;