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Altered PIT statement for performance improvements #224

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Altered PIT statement for performance improvements #224

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48 changes: 30 additions & 18 deletions macros/tables/databricks/pit.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,23 @@ WITH as_of_dates AS (
SELECT * FROM {{ as_of_table_relation }}
),

{%- for sat_name in satellites -%}
{%- set sat_pk_name = (satellites[sat_name]['pk'].keys() | list)[0] -%}
{%- set sat_ldts_name = (satellites[sat_name]['ldts'].keys() | list)[0] -%}
{%- set sat_pk = satellites[sat_name]['pk'][sat_pk_name] -%}
{%- set sat_ldts = satellites[sat_name]['ldts'][sat_ldts_name] -%}
{%- set column_str = "{}.{}".format(sat_name | lower ~ '_src', sat_ldts) -%}

{{ sat_name | lower ~ '_src' }} AS (
SELECT
*,
LEAD({{ sat_ldts }},1,'9999-12-31 23:59:59.999999') OVER (PARTITION BY {{ sat_pk }} ORDER BY {{ sat_ldts }}) as next_{{ sat_ldts }}
FROM
{{ ref(sat_name) }}
),

{%- endfor %}

{%- if automate_dv.is_any_incremental() %}

{{ automate_dv.as_of_date_window(src_pk, src_ldts, stage_tables_ldts, ref(source_model)) }},
Expand Down Expand Up @@ -59,21 +76,21 @@ backfill AS (

{% if enable_ghost_record %}

COALESCE(MAX({{ sat_name | lower ~ '_src' }}.{{ sat_pk }}),
COALESCE({{ sat_name | lower ~ '_src' }}.{{ sat_pk }},
{{ automate_dv.binary_ghost(none, hash) }})
AS {{ sat_name }}_{{ sat_pk_name }},

COALESCE(MAX({{ sat_name | lower ~ '_src' }}.{{ sat_ldts }}),
COALESCE({{ sat_name | lower ~ '_src' }}.{{ sat_ldts }},
{{ automate_dv.date_ghost(date_type = sat_ldts.dtype, alias=none) }})
AS {{ sat_name }}_{{ sat_ldts_name }}

{%- else %}

COALESCE(MAX({{ sat_name | lower ~ '_src' }}.{{ sat_pk }}),
COALESCE({{ sat_name | lower ~ '_src' }}.{{ sat_pk }},
{{ automate_dv.cast_binary(ghost_pk, quote=true) }})
AS {{ sat_name }}_{{ sat_pk_name }},

COALESCE(MAX({{ sat_name | lower ~ '_src' }}.{{ sat_ldts }}),
COALESCE({{ sat_name | lower ~ '_src' }}.{{ sat_ldts }},
{{ automate_dv.cast_date(ghost_date, as_string=true, datetime=true) }})
AS {{ sat_name }}_{{ sat_ldts_name }}

Expand All @@ -90,13 +107,11 @@ backfill AS (
{%- set sat_pk = satellites[sat_name]['pk'][sat_pk_name] -%}
{%- set sat_ldts = satellites[sat_name]['ldts'][sat_ldts_name] %}

LEFT OUTER JOIN {{ ref(sat_name) }} AS {{ sat_name | lower ~ '_src' }}
LEFT OUTER JOIN {{ sat_name | lower ~ '_src' }}
ON a.{{ src_pk }} = {{ sat_name | lower }}_src.{{ sat_pk }}
AND {{ sat_name | lower ~ '_src'}}.{{ sat_ldts }} <= a.AS_OF_DATE
AND {{ sat_name | lower ~ '_src'}}.next_{{ sat_ldts }} > a.AS_OF_DATE
{% endfor %}

GROUP BY
{{ automate_dv.prefix([src_pk], 'a') }}, a.AS_OF_DATE
),
{%- endif %}

Expand All @@ -123,21 +138,21 @@ new_rows AS (

{% if enable_ghost_record %}

COALESCE(MAX({{ sat_name | lower ~ '_src' }}.{{ sat_pk }}),
COALESCE({{ sat_name | lower ~ '_src' }}.{{ sat_pk }},
{{ automate_dv.binary_ghost(none, hash) }})
AS {{ sat_name }}_{{ sat_pk_name }},

COALESCE(MAX({{ sat_name | lower ~ '_src' }}.{{ sat_ldts }}),
COALESCE({{ sat_name | lower ~ '_src' }}.{{ sat_ldts }},
{{ automate_dv.date_ghost(date_type = sat_ldts.dtype, alias=none) }})
AS {{ sat_name }}_{{ sat_ldts_name }}

{%- else %}

COALESCE(MAX({{ sat_name | lower ~ '_src' }}.{{ sat_pk }}),
COALESCE({{ sat_name | lower ~ '_src' }}.{{ sat_pk }},
{{ automate_dv.cast_binary(ghost_pk, quote=true) }})
AS {{ sat_name }}_{{ sat_pk_name }},

COALESCE(MAX({{ sat_name | lower ~ '_src' }}.{{ sat_ldts }}),
COALESCE({{ sat_name | lower ~ '_src' }}.{{ sat_ldts }},
{{ automate_dv.cast_date(ghost_date, as_string=true, datetime=true) }})
AS {{ sat_name }}_{{ sat_ldts_name }}

Expand All @@ -155,14 +170,11 @@ new_rows AS (
{%- set sat_pk = satellites[sat_name]['pk'][sat_pk_name] -%}
{%- set sat_ldts = satellites[sat_name]['ldts'][sat_ldts_name] %}

LEFT OUTER JOIN {{ ref(sat_name) }} AS {{ sat_name | lower ~ '_src' }}
LEFT OUTER JOIN {{ sat_name | lower ~ '_src' }}
ON a.{{ src_pk }} = {{ sat_name | lower }}_src.{{ sat_pk }}
AND {{ sat_name | lower ~ '_src'}}.{{ sat_ldts }} <= a.AS_OF_DATE
AND {{ sat_name | lower ~ '_src'}}.next_{{ sat_ldts }} > a.AS_OF_DATE
{% endfor %}

GROUP BY
{{ automate_dv.prefix([src_pk], 'a') }},
a.AS_OF_DATE
),

pit AS (
Expand All @@ -177,4 +189,4 @@ pit AS (

SELECT DISTINCT * FROM pit

{%- endmacro -%}
{%- endmacro -%}