SQL Server 2014 Enterprise - duplicate (do not use) SQL Server 2017 Enterprise on Windows Symptoms Consider the following scenario: You create a clustered columnstore index on a partitioned table. The maximum l
SQL Server 2016 provides two flavors of columnstore index; clustered (CCI) and nonclustered (NCCI) columnstore index. As shown in the simplified picture below, both indexes are organized as columns but NCCI is created on an existing rowstore table as shown on the right...
index cci clustered columnstore ); This is equivalent to collections that you might find in classic NoSQL database because they store each JSON document as a single entity and optionally create indexes on these documents. The only difference is CLUSTERED COLUMNSTORE index on this table that provide...
-- bcp out the data... run the following in command window bcp columnstore..t_bulkload out c:\temp\t_bulkoad-1.dat -c -T --truncate the table truncate table t_bulkload -- create clustered columnstore index CREATE CLUSTERED COLUMNSTORE index t_bulkload_cci on t_bulkload -- clea...
Assume that you have a table that uses clustered columnstore index in an instance of Microsoft SQL Server 2014, and you either have trace flag 2389 and 2390 or trace flag 4139 enabled. When you run a query that uses th...
This does not apply to columnstore indexes or indexes on memory-optimized tables. For more information, see the SQL Server and Azure SQL index architecture and design guide. A table or view can contain the following types of indexes: Clustered Clustered indexes sort and store the data rows in...
In the next step, let’s check how large delta store affects performance of the queries. For that test, I inserted one million rows to the table using small batches and run the test query. After that, I rebuilt the columnstore index, comparing the execution time of the test query before...
As part of continuous improvement of the quality of SQL Server, we add new tests to stress the features in various ways. We recently discovered a corruption issue in clustered columnstore index in SQL Server 2014 as part of new stress tests. After analyzing...
This is equivalent to collections that you might find in classic NoSQL database because they store each JSON document as a single entity and optionally create indexes on these documents. The only difference is CLUSTERED COLUMNSTORE index on this table that provides the following benefits:...
ERROR: CLI describe error: [Microsoft][ODBC SQL Server Driver][SQL Server]Cursors are not supported on a table which has a clustered columnstore index. : [Microsoft][ODBC SQL Server Driver][SQL Server]Statement(s) could not be prepared. The statement is a simple select, but SAS transla...