Data Access · interview question
A bug appears around parameterized queries. What is the strongest first debugging move?
Multiple choiceMediumchapter-11-curatedpremiumdata-accessparameterized-queries
connection.execute(
"SELECT id FROM orders WHERE customer_id = ?",
(customer_id,),
)Answer and explanation
Correct answer
D. Trace one concrete example, inspect the state transitions, and compare them to the intended rule before rewriting anything.
Why
That approach is reliable because it creates evidence. String interpolation in SQL is one of the fastest ways to create injection risk and brittle query code.
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