Added ADAPTIVE_HASH_INDEX=YES|NO table and index option to InnoDB.
The table and index options only have an effect if InnoDB adaptive hash
index feature is enabled.
- Having the ADAPTIVE_HASH_INDEX TABLE option set to NO will disable
adaptive hash index for all indexes in the table that does not have
the index option adaptive_hash_index=yes.
- Having the ADAPTIVE_HASH_INDEX TABLE option set to YES will enable the
adaptive hash index for all indexes in the table that does not have
the index option adaptive_hash_index=no.
- Using adaptive_hash_index=default deletes the old setting.
- One can also use OFF/ON as the options. This is to make it work similar
as other existing options.
Example:
CREATE TABLE t1 (a int primary key, b varchar(100), c int,
index (b) adaptive_hash_index=no, index (c))
engine=innodb, adaptive_hash_index=yes;
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