{%- macro surrogate_key(field_list) -%}

{# needed for safe_add to allow for non-keyword arguments see SO post #}

{# https://stackoverflow.com/questions/13944751/args-kwargs-in-jinja2-macros #}

{% set frustrating_jinja_feature = varargs %}

{{ return(adapter.dispatch('surrogate_key', 'dbt_utils')(field_list, *varargs)) }}

{% endmacro %}

{%- macro default__surrogate_key(field_list) -%}

{%- if varargs|length >= 1 or field_list is string %}

{%- set error_message = '

'.format(model.package_name, model.name) -%}

{%- do exceptions.warn(error_message) -%}

{# first argument is not included in varargs, so add first element to field_list_xf #}

{%- set field_list_xf = [field_list] -%}

{%- for field in varargs %}

{%- set _ = field_list_xf.append(field) -%}

{%- endfor -%}

{%- else -%}

{# if using list, just set field_list_xf as field_list #}

{%- set field_list_xf = field_list -%}

{%- endif -%}

{%- set fields = [] -%}

{%- for field in field_list_xf -%}

{%- set _ = fields.append(

"coalesce(cast(" ~ field ~ " as " ~ dbt_utils.type_string() ~ "), '')"

) -%}

{%- if not loop.last %}

{%- set _ = fields.append("'-'") -%}

{%- endif -%}

{%- endfor -%}

{{dbt_utils.hash(dbt_utils.concat(fields))}}

{%- endmacro -%}