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Request Manipulation Tools
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Request Manipulation Tools

MediumSQL · PostgreSQL

Problem

Do you know a tool that we can manipulate requests?

Write a PostgreSQL query that returns every request and, when available, its most recent attempt. Requests without attempts must remain in the result. The latest attempt is determined by the attempt timestamp, with the attempt ID resolving ties.

Output

  1. One row per request, ordered by request_id ascending.
  2. Columns: request_id, endpoint, latest_status, latest_response_code, and latest_outcome.
  3. latest_outcome must be SUCCESS for response codes from 200 through 299, FAILED for other attempted responses, and NOT_ATTEMPTED when no attempt exists.

Schema

requests
ColumnTypeDescription
request_idPKINTUnique request identifier
endpointVARCHAR(100)API endpoint targeted by the request
methodVARCHAR(20)HTTP-style request method
request_attempts
ColumnTypeDescription
attempt_idPKINTUnique attempt identifier
request_idINTRequest associated with the attempt
statusVARCHAR(20)Recorded attempt status
response_codeINTResponse code returned by the attempt
attempted_atTIMESTAMPTime when the attempt occurred
Tablesrequestsrequest_attempts
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Your question is Request Manipulation Tools. Start with the requirements and the two tables in the Question tab.

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