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Monthly Campaign Performance Summary
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Monthly Campaign Performance Summary

EasySQL · PostgreSQL

Problem

BrightAds wants a simple monthly view of marketing performance from its campaign delivery table. Write a SQL query to summarize campaign results for January 2024.

Requirements

  1. Return one row per channel for campaigns with campaign_date in January 2024.
  2. For each channel, calculate:
    • total impressions
    • total clicks
    • average spend
  3. Sort the result by total_clicks in descending order.

Output details

  • Return columns in this order: channel, total_impressions, total_clicks, and avg_spend.
  • Round avg_spend to exactly two decimal places.
  • Treat January as inclusive of DATE '2024-01-01' and exclusive of DATE '2024-02-01'.
  • Preserve NULL aggregate results, including total_clicks when all contributing values are NULL.

Schema

marketing_campaigns
ColumnTypeDescription
campaign_idPKINTUnique campaign record identifier
channelVARCHAR(50)Marketing channel
campaign_nameVARCHAR(100)Campaign name
campaign_dateDATEDate the campaign ran
impressionsINTNumber of impressions
clicksINTNumber of clicks
spendDECIMAL(10,2)Campaign spend amount
regionVARCHAR(50)Campaign region
Tablesmarketing_campaigns
Interviewer

Whenever you're ready, walk me through your approach or go straight to the code. The requirements and the one table are in the Question tab.

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