Review a teammate query without blame

Review partner RP analyst or stakeholder 1 Open 2 Diagnose 3 Fix Devon posts a query that undercounts cancellations. You see the issue immediately: a WHERE filter after a LEFT JOIN turns it into an accidental INNER JOIN. The conversation can either protect trust or bury a data assumption. turns choices each Ask, name, verify The 5 Whys habit is useful in SQL review because the first visible bug is rarely the root cause. Instead of saying "your query is wrong," ask why rows disappeared, then why the filter sits where it does. The mechanism is that a WHERE predicate…

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