Applies to: SQL Server 2005 through SQL Server 2012 unless noted otherwise.This guide assumes the reader has a general understanding of the index types available in SQL Server. For a general description of index types, see Index Types.In
IHindextypes (Transact-SQL) 项目 2025/01/03 7 个参与者 反馈 适用范围:SQL Server对于非 SQL Server 发布服务器支持的每个非 SQL Server 索引类型,IHindextypes 系统表包含一行。 此表存储在分发数据库中。展开表 列名称数据类型说明 type nvarchar(255) 支持的非 SQL Server 索引类型的名称。
Depending on the data types in the clustered index, each clustered index structure has one or more allocation units in which to store and manage the data for a specific partition. At a minimum, each clustered index has one IN_ROW_DATA allocation unit per partition. The clustered index ...
Clustered index, if the underlying table contains LOB data types (image, ntext, text) and spatial data types varchar(max) and varbinary(max) columns can't be part of an index. In SQL Server (Starting with SQL Server 2012 (11.x)) and Azure SQL Database, when a table contains varchar(...
從 SQL Server 2012 (11.x) 和 Azure SQL Database 開始,如果其中一個指定的非索引鍵資料行為 varchar(max)、nvarchar(max) 或varbinary(max) 資料類型,可以使用 [ONLINE] 選項來編製或重新編製索引。具決定性之精確或非精確的計算資料行都可以當做內含資料行。 從 image、ntext、text、varchar(max)、nvarchar(...
By specifying n boundary values v1through vnof the given type, this function defines n+1 partitions. A maximum of 1000 partitions can be created this way. The type the function is based on must be of an integral SQL type, LOB’s, xml, timestamp and user defined types are...
Nonunique nonclustered indexes can be created online when the table contains LOB data types but none of these columns are used in the index definition as either key or nonkey (included) columns. Indexes on local temp tables can't be created, rebuilt, or dropped online. This restrict...
Nonunique nonclustered indexes can be created online when the table contains LOB data types but none of these columns are used in the index definition as either key or nonkey (included) columns. Indexes on local temp tables can't be created, rebuilt, or dropped online. This restriction doesn...
To set different types of data compression for different partitions, specify the DATA_COMPRESSION option more than once, for example:SQL Copy --For rowstore tables REBUILD WITH ( DATA_COMPRESSION = NONE ON PARTITIONS (1), DATA_COMPRESSION = ROW ON PARTITIONS (2, 4, 6 TO 8), DATA_...
A partitioned index cannot be created on a table in a partition-by-growth UTS. PARTITIONED cannot be specified if XMLPATTERN is specified. The types of partitioned indexes are partitioning and secondary. An index is considered a partitioning index if the specified index key columns match or ...