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Join Two Tables in SQL
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Join Two Tables in SQL

EasySQL · PostgreSQL

Problem

Komodo Health analytics workflows need a quick view of recent completed clinical events. Write a PostgreSQL query that retrieves qualifying events from the clinical_events table.

Requirements

  1. Return only events with status = 'completed' and an event_date on or after January 1, 2025.
  2. Return event_id, patient_id, event_date, and event_type, ordered from most recent to oldest event. Use event_id as a tie-breaker for identical dates.

Schema

clinical_events
ColumnTypeDescription
event_idPKINTUnique clinical event identifier
patient_idVARCHAR(20)De-identified patient identifier
event_dateDATEDate of the clinical event
event_typeVARCHAR(40)Type of clinical event
statusVARCHAR(20)Event processing status
Tablesclinical_events
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