Is there a use scenario we need to create two covering index on the same set of fields in MySQL?
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Published on 2010-03-23T13:58:01Z
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2010/03/23
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mysql
|covering-index
When will the below be necessary:
create index i_t_a_b on t(a,b);
create index i_t_b_a on t(b,a);
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