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Mysql Query Optimization

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  1. Which statement is used to force the optimizer to use tables in a particular order?
    1. USE INDEX
    2. IGNORE INDEX
    3. STRAIGHT_JOIN
    4. FORCE INDEX
    5. None of these
Correct Option: C

STRAIGHT_JOIN is used to force the optimizer to use tables in a particular order. The MySQL optimizer by default considers itself free to determine the order in which to scan tables most quickly.


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