LOAD INDEX

Preload table indexes into the key cache. This command, used for MyISAM tables, loads index blocks into memory to warm up the cache and improve subsequent query performance.

Syntax

LOAD INDEX INTO CACHE
  tbl_index_list [, tbl_index_list] ...

tbl_index_list:
  tbl_name
    [[INDEX|KEY] (index_name[, index_name] ...)]
    [IGNORE LEAVES]

Description

The LOAD INDEX INTO CACHE statement preloads a table index into the key cache to which it has been assigned by an explicit CACHE INDEX statement, or into the default key cache otherwise.LOAD INDEX INTO CACHE is used only for MyISAM or Aria tables.

The IGNORE LEAVES modifier causes only blocks for the nonleaf nodes of the index to be preloaded.

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