Domain Hr

HR & Operations

Driving Table

When aggregating workforce or issue metrics, drive FROM the fact/event table (issues, tickets, time_entries), not the dimension table (employees, teams, projects). Employees with zero activity MUST NOT appear in activity reports - they have no data to aggregate.

Exception: if a parent/entity table exists whose primary key matches the GROUP BY key AND some parent rows have no matching children in the detail table, drive FROM the parent and LEFT JOIN the detail. Parent rows with zero children must appear with count=0, not be silently dropped.

SCD (Slowly Changing Dimensions)

Tables with _fivetran_start/_fivetran_end or valid_from/valid_to columns track historical state. You MUST filter to the current record before aggregating.

Current record: _fivetran_end = '9999-12-31' OR _fivetran_end IS NULL - verify the sentinel value by querying 3-5 rows before assuming.

For _fivetran_active columns, always use WHERE COALESCE(_fivetran_active, true) - never WHERE _fivetran_active = true because NULL values (meaning "active") would be filtered out.

NEVER aggregate across all historical rows without filtering to current records first - doing so double-counts entities that changed state.

Issue Resolution Metrics

Include ONLY closed issues in resolution time calculations - open issues have no close timestamp.

NEVER substitute current_date for a missing close timestamp - this produces artificially inflated resolution times that corrupt the metric.