Redshift: Use QUALIFY statement instead of prep-CTEs to enhance performance #302
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… for redshift eff_sat
…using-qualify-for-latest-records
tkiehn
added
the
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tkirschke
approved these changes
Jan 10, 2025
| latest_entries_in_sat AS ( | ||
|
|
||
| SELECT | ||
| {{ parent_hashkey }}, | ||
| {{ ns.hdiff_alias }} | ||
| FROM | ||
| latest_entries_in_sat_prep | ||
| WHERE rn = 1 | ||
| {{ this }} redshift_requires_an_alias_if_the_qualify_is_directly_after_the_from |
|
Link to workflow summary: https://github.com/ScalefreeCOM/datavault4dbt-ci-cd/actions/runs/12708999828 RESULTS for Synapse: RESULTS for Postgres: RESULTS for BigQuery: RESULTS for Redshift: RESULTS for Snowflake: RESULTS for Exasol: RESULTS for Fabric: RESULTS for Oracle: RESULTS for Databricks: |
remoteworkflow
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298-bug-redshift-not-using-qualify-for-latest-records
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Description
All macros that need to get the latest existing records now use QUALIFY instead of an additional CTE with ROW_NUMBER() and WHERE. This massively boosts performance.
Fixes #298
Type of change
Please delete options that are not relevant.
Checklist: