The database engine can use indexes to boost performance in a number of different queries. Sometimes these performance improvements are dramatic. An important feature of SQL Server 2000 is a component known as
复合索引(Composite Indexes)# CREATE INDEX index_name on table_name (column1, column2) 隐式索引(Implicit Indexes)# 当创建primary key constraints and unique constraints.时会自动创建隐士索引 全文索引# 一种特殊类型的基于标记的功能性索引,由Microsoft SQL Server全文引擎生成和维护。用于帮助在字符串数据中...
Applies to: SQL Server Azure SQL Managed Instance Partitioning makes large tables or indexes more manageable because partitioning enables you to manage and access subsets of data quickly and efficiently, and maintain the integrity of a data col...
SQ = 服务队列TA = 程序集 (CLR) DML 触发器TF = SQL table-valued-functionTR = SQL DML 触发器TT = 表类型UQ = UNIQUE 约束X = 扩展存储过程适用于:SQL Server 2014 (12.x) 及更高版本、Azure SQL Database、Azure Synapse Analytics、Analytics Platform System (PDW) 。ST = STATS_TREE适用于:...
SQL Server Azure SQL 数据库 Azure SQL 托管实例 Azure Synapse Analytics Microsoft Fabric SQL 数据库 可以使用Partitioned Tables and Indexes所提供的存储算法来存储数据。 分区可以使大型表和索引更易于管理并且更灵活。 索引和表分区 通过该功能可以将索引和表数据分散到各个分区中的多个文件组。 分区函数...
计划使用此页可以创建或管理 SQL Server 代理作业的计划,该作业用于启动全文索引填充的表增量填充。 有关详细信息,请参阅填充全文索引。 注意:在退出“全文索引属性”对话框之后,所有新创建的计划都将与 SQL Server 代理作业(对database_name.table_name启动表增量填充)相关联。
A standard user-defined table can have up to 1,024 columns. The number of rows in the table is limited only by the storage capacity of the server. You can assign properties to the table and to each column in the table to control the data that is allowed and other properties. For ...
SQL Server索引元数据对性能优化有何作用? 背景 在第一篇中我介绍了如何访问元数据,元数据为什么在数据库里面,以及如何使用元数据。介绍了如何查出各种数据库对象的在数据库里面的名字。第二篇,我选择了触发器的主题,因为它是一个能提供很好例子的数据库对象,并且在这个对象中能够提出问题和解决问题。 本篇我将会介...
If you enable partition switching on SQL Server 2008 R2 through the current version, you might also need split and merge operations in near future. Before executing a split or merge operation on a replicated or CDC enabled table ensure that the partition in question does not have any pending ...
A standard user-defined table can have up to 1,024 columns. The number of rows in the table is limited only by the storage capacity of the server. You can assign properties to the table and to each column in the table to control the data that is allowed and other properties. For ...