Note:The syntax for creating indexes varies among different databases. Therefore: Check the syntax for creating indexes in your database. CREATE INDEX Example The SQL statement below creates an index named "idx_lastname" on the "LastName" column in the "Persons" table: ...
在SQL Server 的未来版本中,将删除此后向兼容的关系索引语法结构。请避免在新的开发工作中使用此语法结构,并计划修改当前使用此功能的应用程序。改用 <relational_index_option> 中指定的语法结构。syntaxsql 复制 CREATE [ UNIQUE ] [ CLUSTERED | NONCLUSTERED ] INDEX index_name ON ( column_name [ ASC...
Syntax for SQL Server, Azure SQL Database, and Azure SQL Managed Instance.syntaxsql Copy ALTER INDEX { index_name | ALL } ON { REBUILD { [ PARTITION = ALL [ WITH ( <rebuild_index_option> [ , ...n ] ) ] ] | [ PARTITION = partition_number [ WITH ( <single_partition_rebuild_...
SQL Server、Azure SQL Database、Azure SQL 受控執行個體的語法syntaxsql 複製 CREATE [ UNIQUE ] [ CLUSTERED | NONCLUSTERED ] INDEX index_name ON ( column [ ASC | DESC ] [ ,...n ] ) [ INCLUDE ( column_name [ ,...n ] ) ] [ WHERE <filter_predicate> ] [ WITH ( <relational...
Syntax for SQL Server, Azure SQL Database, and Azure SQL Managed Instance.syntaxsql Copy ALTER INDEX { index_name | ALL } ON { REBUILD { [ PARTITION = ALL [ WITH ( <rebuild_index_option> [ , ...n ] ) ] ] | [ PARTITION = partition_number [ WITH ( <single_partition_rebuild_...
SQL基础语法—create index语句 1 create index语句介绍 create index语句用来在表中创建索引。索引的作用提高数据库查询的效率,这个作用对用户来说是透明的,其作用只是对MySQL引擎来说的。 Syntax:CREATE[UNIQUE|FULLTEXT|SPATIAL] INDEX index_name [index_type]ONtbl_name (index_col_name,...)...
适用于: SQL Server Azure SQL 数据库 Azure SQL 托管实例在SQL Server 中更改全文检索的属性。Transact-SQL 语法约定语法syntaxsql 复制 ALTER FULLTEXT INDEX ON table_name { ENABLE | DISABLE | SET CHANGE_TRACKING [ = ] { MANUAL | AUTO | OFF } | ADD ( column_name [ TYPE COLUMN type_column...
SQL database in Microsoft Fabric Specifies a set of options that can be applied to an index that is part of a constraint definition that is created by usingALTER TABLE. For a complete description of index options, seeCREATE INDEX. Transact-SQL syntax conventions ...
] table_or_view_name } <backward_compatible_index_option> ::= { PAD_INDEX | FILLFACTOR = fillfactor | SORT_IN_TEMPDB | IGNORE_DUP_KEY | STATISTICS_NORECOMPUTE | DROP_EXISTING } Azure Synapse Analytics 和并行数据仓库的语法syntaxsql 复制 CREATE CLUSTERED COLUMNSTORE INDEX index_name ON [...
Oracle Database SQL Language ReferenceCREATE INDEXsyntax and semantics Composite Indexes Acomposite index, also called aconcatenated index, is an index on multiple columns in a table. Columns in a composite index should appear in the order that makes the most sense for the queries that will retri...