Interviewer: If databases use indexes to speed up queries, why not index every column?

Byali

May 7, 2026 #SQL

The question sounds naive. The answer reveals everything about how databases actually work under load.

Interviewer: If databases use indexes to speed up queries, why not index every column? The question sounds naive. The answer reveals everything about how databases actually work under load.Continue reading on Medium » Read More Sql on Medium

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Interviewer: If databases use indexes to speed up queries, why not index every column?

Byali

By ali

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