sql索引

创建索引

使用CREATE 语句创建索引

CREATE INDEX index_name ON table_name(column_name,column_name) include(score)
普通索引

CREATE UNIQUE INDEX index_name ON table_name (column_name) ;

非空索引

CREATE PRIMARY KEY INDEX index_name ON table_name (column_name) ;

主键索引
 
使用ALTER TABLE语句创建索引

alter table table_name add index index_name (column_list) ;
alter table table_name add unique (column_list) ;
alter table table_name add primary key (column_list) ;


删除索引

drop index index_name on table_name ;
alter table table_name drop index index_name ;
alter table table_name drop primary key ;

查询索引

select object_name(object_id) tableName,name,type_desc from sys.indexes where name='Hishop_Articles_ArticleId' //索引名称 Hishop_Articles_ArticleId