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Handle empty values in pivot macro #1010

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Handle empty values in pivot macro #1010

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71e6e82
handle empty values in pivot, get_query, get_query_results_as_dict an…
Ananz2022 Mar 31, 2025
67c041a
Remove changes to other macros
dbeatty10 Apr 3, 2025
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44 changes: 27 additions & 17 deletions macros/sql/pivot.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -65,22 +65,32 @@ Arguments:
else_value=0,
quote_identifiers=True,
distinct=False) %}
{% for value in values %}
{{ agg }}(
{% if distinct %} distinct {% endif %}
case
when {{ column }} {{ cmp }} '{{ dbt.escape_single_quotes(value) }}'
then {{ then_value }}
else {{ else_value }}
end
)
{% if alias %}
{% if quote_identifiers %}
as {{ adapter.quote(prefix ~ value ~ suffix) }}
{% else %}
as {{ dbt_utils.slugify(prefix ~ value ~ suffix) }}

{# Check if values are empty or None #}
{% if values is none or values == [] %}
{{ log('Pivot: No values to pivot. Creating an empty column with the default then_value.', info=True) }}
{% set empty_column = prefix ~ 'empty' ~ suffix %}
{{ then_value }} as {{ adapter.quote(empty_column) }}

{% else %}
{# Regular pivot behavior with provided values #}
{% for value in values %}
{{ agg }}(
{% if distinct %} distinct {% endif %}
case
when {{ column }} {{ cmp }} '{{ dbt.escape_single_quotes(value) }}'
then {{ then_value }}
else {{ else_value }}
end
)
{% if alias %}
{% if quote_identifiers %}
as {{ adapter.quote(prefix ~ value ~ suffix) }}
{% else %}
as {{ dbt_utils.slugify(prefix ~ value ~ suffix) }}
{% endif %}
{% endif %}
{% endif %}
{% if not loop.last %},{% endif %}
{% endfor %}
{% if not loop.last %},{% endif %}
{% endfor %}
{% endif %}
{% endmacro %}
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