Starting with SQL Server 2012 (11.x) and Azure SQL Database, if any one of the specified non-key columns are varchar(max), nvarchar(max), or varbinary(max) data types, the index can be built or rebuilt using the ONLINE option.
Create an indexed view: a T-SQL example The following example creates a view and an index on that view, in theAdventureWorksdatabase. SQLCopy --Set the options to support indexed views.SETNUMERIC_ROUNDABORTOFF;SETANSI_PADDING, ANSI_WARNINGS, CONCAT_NULL_YIELDS_NULL, ARITHABORT, QUOTED_IDENTIFIE...
Here, the SQL command creates an index namedcollege_indexon theCollegestable using thecollege_codecolumn. SQL CREATE INDEX Syntax The syntax of the SQLCREATE INDEXstatement is: CREATEINDEXindex_nameONtable_name (column_name1, column_name2, ...); Here, index_nameis the name given to the in...
Create an indexed view: a T-SQL exampleThe following example creates a view and an index on that view, in the AdventureWorks database.SQL Copy --Set the options to support indexed views. SET NUMERIC_ROUNDABORT OFF; SET ANSI_PADDING, ANSI_WARNINGS, CONCAT_NULL_YIELDS_NULL, ARITHABORT, ...
CREATE DATABASE (SQL Server Compact Edition) CREATE INDEX (SQL Server Compact Edition) CREATE STATISTICS (SQL Server Compact Edition) CREATE TABLE (SQL Server Compact Edition) DATALENGTH (SQL Server Compact Edition) DATEADD (SQL Server Compact Edition) DATEDIFF (SQL Server Compact Edition) DATENAME ...
CREATE INDEX Example The SQL statement below creates an index named "idx_lastname" on the "LastName" column in the "Persons" table: CREATEINDEXidx_lastname ONPersons (LastName); If you want to create an index on a combination of columns, you can list the column names within the parenthe...
To create a unique index on a table, using: SQL Server Management Studio Transact-SQL Before You Begin Benefits of a Unique Index Multicolumn unique indexes guarantee that each combination of values in the index key is unique. For example, if a unique index is created on a combination ofLas...
CREATE INDEX 语句用于对数据库表定义索引。 可以对 XML 数据或关系数据定义索引。 CREATE INDEX 语句还用于创建索引规范(就是用来向优化器指示数据源表具有索引的元数据)。 调用 此语句可以嵌入在应用程序中,也可通过动态 SQL 语句来发出。 它是一个可执行语句,仅当 DYNAMICRULES 运行行为对于程序包有效时才能动态...
Using Transact-SQL to create an index with nonkey columnsIn Object Explorer, connect to an instance of Database Engine. On the Standard bar, select New Query. Copy and paste the following example into the query window and select Execute. SQL Copy USE AdventureWorks202...
COT (SQL Server Compact) COUNT (SQL Server Compact) CREATE DATABASE (SQL Server Compact) CREATE INDEX (SQL Server Compact) CREATE STATISTICS (SQL Server Compact) CREATE TABLE (SQL Server Compact) DATALENGTH (SQL Server Compact) DATEADD (SQL Server Compact) DATEDIFF (SQL Server Compact) DATENAME...