![]() Specifies the one-, two-, or three-part name of the table to be stored as a clustered columnstore index. If the table already has a clustered columnstore index, you can specify the same name as the existing index, or you can use the DROP EXISTING option to specify a new name. If the table is already stored as a clustered columnstore index, then the existing index is dropped and rebuilt. If the existing table is a heap or clustered index, then it will be converted to a clustered columnstore index. The index includes all of the columns in the table, and stores the entire table. CREATE CLUSTERED COLUMNSTORE INDEXĬreate a clustered columnstore index in which all of the data is compressed and stored by column. The following table shows the versions when the options are introduced in CLUSTERED COLUMNSTORE and NONCLUSTERED COLUMNSTORE indexes: OptionĪll options are available in Azure SQL Database. Some of the options aren't available in all database engine versions. To view Transact-SQL syntax for SQL Server 2014 (12.x) and earlier versions, see Previous versions documentation. Syntax for SQL Server and Azure SQL Database: - Create a clustered columnstore index on disk-based table.ĬREATE CLUSTERED COLUMNSTORE INDEX index_name ![]() It's no longer necessary to first create a rowstore table and then convert it to a clustered columnstore index.įor information on columnstore index design guidelines, see Columnstore indexes - Design guidance. Starting with SQL Server 2016 (13.x), you can create the table as a clustered columnstore index. For more information, see CREATE COLUMNSTORE INDEX. Ordered clustered columnstore indexes were introduced in SQL Server 2022 (16.x). Use a columnstore index to efficiently run real-time operational analytics on an OLTP workload, or to improve data compression and query performance for data warehousing workloads.įollow What's new in columnstore indexes for the latest improvements to this feature. ![]() Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW)Ĭonvert a rowstore table to a clustered columnstore index, or create a nonclustered columnstore index.
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