MySQL 创建索引(Create Index)的方法和语法结构及例子

CREATE INDEX Syntax

CREATE [UNIQUE|FULLTEXT|SPATIAL] INDEX index_name
[index_type]
ON tbl_name (index_col_name,...)
[index_type]

index_col_name:
col_name [(length)] [ASC | DESC]

index_type:
USING {BTREE | HASH | RTREE}