SQL Window Functions: LAG, LEAD, Deltas, and Time-Series Comparisons/Preview next billing date or status
Use LEAD for forward state checks.
Section: Time-series patterns
Preview next billing date or status
sql
sql
SELECT customer_id,
billing_month,
status,
LEAD(status) OVER (
PARTITION BY customer_id
ORDER BY billing_month
) AS next_status
FROM subscription_history;Explanation
Useful in churn modeling, handoff workflows, and lifecycle analysis.
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Related commands
Same sheet · prioritizing Time-series patterns