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cc959798
V2EX  ›  MySQL

请问 mysql explain 中的 eq_ref 和 const 有什么区别呢?

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  •   cc959798 · Oct 16, 2018 · 5703 views
    This topic created in 2919 days ago, the information mentioned may be changed or developed.

    查了很多资料都说是使用主键和唯一索引,但是有区别吗

    2 replies  •  2018-10-17 10:09:25 +08:00
    cc959798
        2
    cc959798  
    OP
       Oct 17, 2018
    @liuhuanting 大佬说实话,英文太渣了我看过的没怎么看懂
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