https://sudonull.com/column-sum-control-in-python-pandas-function
How to Track Column Sum Changes in pandas Using the det_sum Function. Automate Data Monitoring and Detect Anomalies in ETL Processes.
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https://sudonull.com/date-filters-in-apache-superset-workarounds
How to solve the default time column issue in Superset 3.x–6.x. Working technical solutions for developers: virtual datasets, extra_json, SQL parameterization.
https://sudonull.com/collapsingmergetree-in-clickhouse-update-without-update
How CollapsingMergeTree and VersionedCollapsingMergeTree replace UPDATE in ClickHouse: sign column, collapsing pairs, SUM(amount*sign), ordering problem and solution via versions.
https://sudonull.com/date-filters-in-superset-bypassing-the-wrapper
Setting up virtual datasets in Apache Superset with custom dates from filters. Hack with a dummy column for middle/senior dev. Full guide without filtering errors.
https://sudonull.com/order-by-and-primary-key-in-clickhouse-index-selection
How to correctly choose ORDER BY in ClickHouse: sparse index, column cardinality, equality vs range, verification via EXPLAIN. Rules and examples for gambling.
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