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SQL

Indexing Superpowers: The 5 Index Types Every Dev Should Know

- 05.12.25 - ErcanOPAK

Indexes aren’t magic —
…but they often look like magic when your query goes 40 sec → 20 ms. ⚡

🏆 5 Index Types Everyone Should Know

  • 🔹 Clustered Index — defines table order

  • 🔹 Nonclustered Index — fast lookup

  • 🔹 Include Columns — covering index booster

  • 🔹 Filtered Index — tiny but powerful

  • 🔹 Columnstore Index — analytics monster

-- Example: filtered index
CREATE INDEX IX_Orders_Active
ON Orders(Status)
WHERE Status = 'Active';

💡 Bonus

Never add indexes “everywhere”. Measure impact with Query Store.

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Post navigation

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