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Editorial Team
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Asked: 2026-05-22T00:13:52+00:00

Apart from creating indexes on columns that are retrieved often, and doing SELECT col1,

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Apart from creating indexes on columns that are retrieved often, and doing SELECT col1, col2, col3 FROM tbl instead of SELECT * FROM table, what else should I know about designing databases for scalability / fast performance?

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1 Answer

  1. Editorial Team

    You should know:

    1. how order affects JOINs.
    2. how to use EXPLAIN PLAN.
    3. how certain kinds of WHERE clauses cannot use indexes and force table scans.
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