How to Create Index in SQL
In this article I am going to explain how to create index in SQL.
Index in SQL is used to quickly access the data from table or view. Indexes are created on table or view. Database have large amount of data like thousands of tables and view. When we try to access this data it takes more time.
SQL provide a way known as index through we can access a specific data quickly. CREATE INDEX statement is used to create a index.
Type of index in SQL
- Clustered index
- Non clustered index
- Unique index
- Columnstore index
Statement that create index
create index indexmcn on mcnemp (id)
Statement that create index using two column
create index indexmcn2 on mcnemp (id,name)