oracle 反向索引

create index I_INFO_CLASSID on b_info(CLASSID);
create index I_INFO_CLASSID_REVERSE on b_info(reverse(CLASSID));
analyze table b_info compute statistics for table for all indexes;
--都使用索引
select * from b_info where classid like '1E92C5409E99484%';
--都使用索引
select * from b_info where reverse(classid) like reverse('%33B27');

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