mysql创建索引语句Create Index及示例

mysql创建索引语句Create Index)及示例，供大家学习参考。

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}

例子：