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TV Shows Genre Query via REST
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TV Shows Genre Query via REST

MediumSQL · PostgreSQL

Problem

REST API: use HTTP GET to query a HackerRank TV-series endpoint and find the best TV show in a given genre (Java).

Asked in the Online assessment stage. OA question 1, linked as 'REST API best TV shows in genre'. Write a PostgreSQL query using the supplied genre parameter, \$1.

Output

  1. Return at most one row with show_id, title, and average_rating.
  2. Include only shows in the requested genre with at least one non-NULL rating. Rows with a NULL rating are ignored.
  3. Sort by highest average rating, then title ascending, then show_id ascending to break ties.

Schema

tv_shows
ColumnTypeDescription
show_idPKINTEGERUnique identifier for a TV show
titleVARCHAR(200)TV show title
show_genres
ColumnTypeDescription
show_idINTEGERReferenced TV show identifier
genreVARCHAR(50)Genre assigned to the show
show_ratings
ColumnTypeDescription
rating_idPKINTEGERUnique rating identifier
show_idINTEGERReferenced TV show identifier
ratingNUMERIC(4,2)Rating value, where NULL means no usable rating
Tablestv_showsshow_genresshow_ratings
Interviewer

Your question is TV Shows Genre Query via REST. Start with the requirements and the three tables in the Question tab.

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