47 lines
2.2 KiB
MySQL
47 lines
2.2 KiB
MySQL
|
{#
|
||
|
|
Similar to the star macro here: https://github.com/dbt-labs/dbt-utils/blob/main/macros/sql/star.sql
|
||
|
|
|
||
|
|
This star_intersect macro takes an additional 'intersect' relation as argument.
|
||
|
|
Its behavior is to select columns from both 'intersect' and 'from' relations with the following rules:
|
||
|
|
- if the columns are existing in both 'from' and the 'intersect' relations, then the column from 'intersect' is used
|
||
|
|
- if it's not in the both relation, then only the column in the 'from' relation is used
|
||
|
|
#}
|
||
|
|
{% macro star_intersect(from, intersect, from_alias=False, intersect_alias=False, except=[]) -%}
|
||
|
|
{%- do dbt_utils._is_relation(from, 'star_intersect') -%}
|
||
|
|
{%- do dbt_utils._is_ephemeral(from, 'star_intersect') -%}
|
||
|
|
{%- do dbt_utils._is_relation(intersect, 'star_intersect') -%}
|
||
|
|
{%- do dbt_utils._is_ephemeral(intersect, 'star_intersect') -%}
|
||
|
|
|
||
|
|
{#-- Prevent querying of db in parsing mode. This works because this macro does not create any new refs. #}
|
||
|
|
{%- if not execute -%}
|
||
|
|
{{ return('') }}
|
||
|
|
{% endif %}
|
||
|
|
|
||
|
|
{%- set include_cols = [] %}
|
||
|
|
{%- set cols = adapter.get_columns_in_relation(from) -%}
|
||
|
|
{%- set except = except | map("lower") | list %}
|
||
|
|
{%- for col in cols -%}
|
||
|
|
{%- if col.column|lower not in except -%}
|
||
|
|
{% do include_cols.append(col.column) %}
|
||
|
|
{%- endif %}
|
||
|
|
{%- endfor %}
|
||
|
|
|
||
|
|
{%- set include_intersect_cols = [] %}
|
||
|
|
{%- set intersect_cols = adapter.get_columns_in_relation(intersect) -%}
|
||
|
|
{%- for col in intersect_cols -%}
|
||
|
|
{%- if col.column|lower not in except -%}
|
||
|
|
{% do include_intersect_cols.append(col.column) %}
|
||
|
|
{%- endif %}
|
||
|
|
{%- endfor %}
|
||
|
|
|
||
|
|
{%- for col in include_cols %}
|
||
|
|
{%- if col in include_intersect_cols -%}
|
||
|
|
{%- if intersect_alias %}{{ intersect_alias }}.{% else %}{%- endif -%}{{ adapter.quote(col)|trim }}
|
||
|
|
{%- if not loop.last %},{{ '\n ' }}{% endif %}
|
||
|
|
{%- else %}
|
||
|
|
{%- if from_alias %}{{ from_alias }}.{% else %}{{ from }}.{%- endif -%}{{ adapter.quote(col)|trim }} as {{ adapter.quote(col)|trim }}
|
||
|
|
{%- if not loop.last %},{{ '\n ' }}{% endif %}
|
||
|
|
{%- endif %}
|
||
|
|
{%- endfor -%}
|
||
|
|
{%- endmacro %}
|