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Top Vendors by Spend

MediumSQL · PostgreSQL00:00
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Your question is Top Vendors by Spend. Start with the requirements and the two tables on the right.

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Problem

Zoox's procurement team wants to identify the vendors with the highest total charges over the most recent two-year period. Write a PostgreSQL query using the current date as the end of the period.

Requirements

  1. Include charges from CURRENT_DATE - INTERVAL '2 years' through CURRENT_DATE.
  2. Aggregate total charged dollars by vendor.
  3. Return the top three vendors, ordered by total charged dollars descending, with vendor_id as a deterministic tie-breaker.
  4. Exclude charges that do not match a vendor in vendors.

Schema

vendors
ColumnTypeDescription
vendor_idPKINTEGERUnique vendor identifier
vendor_nameVARCHAR(150)Vendor's business name
charges
ColumnTypeDescription
charge_idPKINTEGERUnique charge identifier
vendor_idINTEGERVendor associated with the charge
charge_dateDATEDate the charge was recorded
amountNUMERIC(12,2)Dollar amount of the charge
Tablesvendorscharges
Your solutionPostgreSQL
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