ALTER TABLE语句来修改索引。，``sql，ALTER TABLE table_name DROP INDEX old_index_name;，ALTER TABLE table_name ADD INDEX new_index_name (column_name);，``ALTER TABLE语句来修改索引。，``sql，ALTER TABLE table_name DROP INDEX old_index_name;，ALTER TABLE table_name ADD INDEX new_index_name (column_name);，``Powered By Z-BlogPHP 1.7.3