Lead Funnel Conversion by Source
Problem
**[Asked at Salesforce]**
For each lead source, compute: total leads, qualified-or-better count
(stage in Qualified / Closed-Won / Closed-Lost), won count, win rate (%).
Return `source`, `total_leads`, `qualified_or_better`, `won`, `win_rate`
(2 dp). Order by win_rate descending.
Tables
Example rows — the live problem includes the full dataset.
leads
| lead_id | source | stage |
|---|
Expected output
Your answer should return 2 rows with the columns source, total_leads, qualified_or_better, won, win_rate.
Starter code (SQL)
SELECT *
FROM leads;Solve this SQL question free
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Solution & explanation
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