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Window Functions for Latest Claim
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Window Functions for Latest Claim

MediumSQL · PostgreSQL

Problem

Write a query using window functions to find the most recent medical claim for each member in a database.

Use the provided members and medical_claims tables. Return members with at least one claim, selecting the greatest claim date and using the highest claim ID to break date ties.

Output

  1. One row per member with at least one claim
  2. Columns: member_id, member_name, claim_id, claim_date, claim_type, claim_status
  3. Order by member_id ascending

Schema

members
ColumnTypeDescription
member_idPKINTUnique member identifier
member_nameVARCHAR(100)Member's full name
member_statusVARCHAR(20)Current membership status
emailVARCHAR(150)Member email address
medical_claims
ColumnTypeDescription
claim_idPKINTUnique medical claim identifier
member_idINTMember associated with the claim
claim_dateDATEDate the claim was submitted
claim_typeVARCHAR(50)Type of medical service claimed
claim_statusVARCHAR(20)Processing status of the claim
Tablesmembersmedical_claims
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Your question is Window Functions for Latest Claim. Start with the requirements and the two tables in the Question tab.

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