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MySQL创建index示例_MySQL

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Release: 2016-06-01 13:40:31
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MySQL创建index示例 环境:MySQL Sever 5.1 + MySQL命令行工具 问题:创建索引 CREATE INDEX 语法: 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} 示例: [sql] -- 创建无索引的表  create table testIndex (     id int not null primary key,     name varchar(10)    );          -- 创建普通索引    create index IDX_test_testIndex _Name on testIndex(name);    说明:索引的命名最好采用此种方式:IDX_databaseName_tableName_columnName(IDX表示索引,databaseName表示数据库名,tableName表示表名,columnName表示字段名,如果Oracle下不存在数据库的概念,取而代之的是表空间,所以databaseName替换成用户名即可)。 参考资料:MySQL里创建索引(Create Index)的方法和语法结构及例子http:///database/201209/155472.html bitsCN.com

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