Purpose
You can use this statement to load indexes to a cache to improve the query performance. You can load multiple indexes at a time, instead of loading them one by one. This can reduce the system overhead in loading indexes, thereby improving the overall performance.
Syntax
LOAD INDEX INTO CACHE tbl_index_list [, tbl_index_list ...];
tbl_index_list:
tbl_name [PARTITION (partition_list)] [{INDEX|KEY} (index_name[, index_name ...])] [IGNORE LEAVES]
partition_list:
partition_name [, partition_name ...]
| ALL
Note
In the current version, only the statement syntax is supported. The functionality does not actually take effect.