First and Last Peak Accuracy Dates

A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.

Domain

SQL

Difficulty

medium

Seniority

L3

Problem

The ML team wants to know when peak model performance was first achieved and whether it has been replicated since. Find the highest accuracy score across all models, then show the earliest and latest training dates where that accuracy was hit.

Summary

Peak accuracy. When it first hit and when it last did.

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