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SQL Top Venues Per City
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SQL Top Venues Per City

MediumSQL · PostgreSQL

Problem

Write a SQL query to rank venues within each city by visit count and return the top 3 per city.

Assume each row in visits represents one visit. Include venues with no visits, break equal visit counts by ascending venue_id, and use a one-based rank.

Output

  1. One row per selected venue, with city_name, venue_id, venue_name, visit_count, and city_rank.
  2. Return at most three venues per city, ordered by city_name, city_rank, and venue_id.

Schema

cities
ColumnTypeDescription
city_idPKINTEGERUnique city identifier
city_nameVARCHAR(100)City name
venues
ColumnTypeDescription
venue_idPKINTEGERUnique venue identifier
city_idINTEGERCity containing the venue
venue_nameVARCHAR(150)Venue name
visits
ColumnTypeDescription
visit_idPKINTEGERUnique visit identifier
venue_idINTEGERVenue visited
visited_atTIMESTAMPTimestamp of the visit
Tablescitiesvenuesvisits
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