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SQL for High Claim Frequency
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SQL for High Claim Frequency

MediumSQL · PostgreSQL

Problem

Write a SQL query to find all policyholders who have filed more than two claims in the past year at Berkshire Hathaway Guard Insurance Companies.

Use the policyholders and claims tables. Treat the past year as the period from one year before CURRENT_DATE through CURRENT_DATE, inclusive.

Output

  1. Return one row per qualifying policyholder with policyholder_id, policyholder_name, and claim_count.
  2. Include only policyholders with more than two claims in that period.
  3. Order by claim_count descending, then policyholder_id ascending.

Schema

policyholders
ColumnTypeDescription
policyholder_idPKINTUnique policyholder identifier
policyholder_nameVARCHAR(150)Policyholder's full name
claims
ColumnTypeDescription
claim_idPKINTUnique claim identifier
policyholder_idINTPolicyholder associated with the claim
filed_dateDATEDate the claim was filed
Tablespolicyholdersclaims
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