前期准备：

create table T9(A int ,B text,C text,fulltext index fix_test_for_T8_B(B));#在定义表的时候加索引

create unique index ix_test_for_T8_A on T9(A);#加朴素索引

create fulltext index fix_test_for_T8_C on T9(C);#加全文索引

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解决办法：

select index from table_name。

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select index from T9;