databases/

Tables, queries, indexes, transactions, storage engines and caching.

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databases/sql-indexes-why-finding-one-row-among-200-000-takes-about-18-steps.md SQL indexes: why finding one row among 200,000 takes about 18 steps A database with 200,000 customers can answer "find this email" by reading every row, or by reading about 18 entries. The difference is an… 4 min read · 20 Oct