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Sunday, 30 August 2026 Reading Room

Tech

Funnel Conversion in SQL, and the Step That Shows 100%

By Michael Nocito , data analyst · Published August 8, 2026 By the end of this page you can turn a table of events into a funnel in one query, work out what fraction of people get from each step to the next, tell the difference between a step people pass and a step people skip, and produce the one summary a funnel is actually for: where everybody stops. It is about twenty-five minutes, and every…

dev.to ·

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ICE Could Deploy Robot Dogs: How Would They Be Used

ICE is considering spending up to $2M on robot dogs for inspections, hazard assessments and officer safety.

  • DHS considering $1-2M purchase of Boston Dynamics SPOT robots for ICE.
  • Robots aim to enhance officer safety and improve situational awareness.
  • ICE to release solicitation on September 4 for remote-operated inspection and hazard assessment.

·newsweek.com

When to Index a Table: A Practical Guide for Analysts

By Michael Nocito , data analyst · Published August 8, 2026 By the end of this page you can tell whether a query is reading your whole table or jumping straight to what it needs, add an index that…

  • Indexes improve database performance by allowing direct data access
  • Indexes are sorted copies of table columns, enabling quick row location
  • Indexes benefit queries filtering/sorting by indexed columns, not unrelated columns

·dev.to

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