PARTITIONS(<range>), ... )--===--在新建索引时指定压缩CREATECLUSTEREDINDEX[CLX_ID]ON[dbo].[TB2]([ID]ASC)WITH (DATA_COMPRESSION= { NONE| ROW| PAGE})ON[PRIMARY]GO--===--使用重建索引来进行压缩ALTERINDEX[CLX_ID]ON[dbo].[TB2] REBUILD PARTITION=ALLWITH ( DATA_COMPRESSION= { NONE| ROW...
, ... )--===--在新建索引时指定压缩CREATECLUSTEREDINDEX[CLX_ID]ON[dbo].[TB2]([ID]ASC)WITH(DATA_COMPRESSION={ NONE|ROW|PAGE})ON[PRIMARY]GO--===--使用重建索引来进行压缩ALTERINDEX[CLX_ID]ON[dbo].[TB2]REBUILD PARTITION=ALLWITH( DATA_COMPRESSION={ NONE|ROW|PAGE })--===...
sys.indexes (Transact-SQL)-type和type_desc列包括CLUSTERED COLUMNSTORE和NONCLUSTERED COLUMNSTORE。 sys.partitions (Transact-SQL)-data_compression和data_compression_desc列包括COLUMNSTORE和COLUMNSTORE_ARCHIVE。 sp_estimate_data_compression_savings (Transact-SQL)过程也可应用于列存储索引。
ALTER TABLE t123 ADD PRIMARY KEY CLUSTERED (hid) --hid字段必须是not null才能创建主键 CREATE CLUSTERED INDEX [CI_hid2] ON [t123] (hid2) --无法创建有如下报错,说明创建主键没有加nonclustered时主键默认是clustered索引 报错:Cannot create more than one clustered index on table ‘t123’. Drop th...
COMPRESSION_DELAY = 0 | delay [ Minutes ]:默认值是0,对于disk-based表,该选项指定处于CLOSED 状态的delta rowgroup必须保留在delta rowgroup的最小延迟,当超过该延迟后,SQL Server的后台进程 tuple-mover 会把该CLOSED增量行组压缩到列存储中。 DATA_COMPRESSION = COLUMNSTORE | COLUMNSTORE_ARCHIVE:列存储的数...
Use the columnstore index to achieve up to 10x query performance gains over traditional row-oriented storage, and up to 7x data compression over the uncompressed data size. Columnstore Indexes GuideColumnstore Index Design Guidelines Index with included columns A nonclustered index that is extended to...
SQL Server Save Share via Facebookx.comLinkedInEmail Estimate the size of a clustered index Article 03/04/2025 11 contributors Feedback In this article Step 1. Calculate the space used to store data in the leaf level Step 2. Calculate the space used to store index information ...
fetch next from cur_indexes into @index_Id while @@FETCH_STATUS = 0 begin /* set @sqlstatement = N'insert into #tempTabIndall exec sp_executesql N''DBCC IND(' + @databasename + ','''+@tablename+''',' + convert(varchar(max),@index_Id)+')''' ; */ set...
OptionCLUSTEREDNONCLUSTERED COMPRESSION_DELAY SQL Server 2016 (13.x) SQL Server 2016 (13.x) DATA_COMPRESSION SQL Server 2016 (13.x) SQL Server 2016 (13.x) ONLINE SQL Server 2019 (15.x) SQL Server 2017 (14.x) WHERE clause N/A SQL Server 2016 (13.x) ORDER clause SQL Server 2016 ...
Use the columnstore index to achieve up to 10x query performance gains over traditional row-oriented storage, and up to 7x data compression over the uncompressed data size. Columnstore Indexes GuideColumnstore Index Design Guidelines Index with included columns A nonclustered index that is extended to...