Here, the SQL command creates a unique index namedcollege_indexon theCollegestable using thecollege_codecolumn. Note:Although the index is created for only unique values, the original data in the table remains
Using the keyword ALL with this operationFails if the table has one or more REBUILD WITH ONLINE = ON XML indexSpatial indexColumnstore index in SQL Server 2017 (14.x) and older versions only. Later versions support online rebuild of columnstore indexes. REBUILD PARTITION = <partition_number> ...
Using the keyword ALL with this operationFails if the table has one or more REBUILD WITH ONLINE = ON XML indexSpatial indexColumnstore index in SQL Server 2017 (14.x) and older versions only. Later versions support online rebuild of columnstore indexes. REBUILD PARTITION = <partition_number> ...
To see which indexes the query optimizer uses for a specific query, in SQL Server Management Studio, on the Query menu, select Include Actual Execution Plan. Don't always equate index usage with good performance, and good performance with efficient index use. If using an index always helped...
Ordered clustered columnstore indexes were introduced in SQL Server 2022 (16.x). For more information, see CREATE COLUMNSTORE INDEX. For ordered columnstore index availability, see Columnstore indexes: Overview. Starting with SQL Server 2016 (13.x), you can create the table as a clustered columnst...
Examples Next steps Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL database in Microsoft Fabric Contains one row per column that is part of an index or unordered table (heap). Expand table Column nameData type...
By default, the columnInfoused does not exist, it can be created in theAdventureWorksdatabase with the following code. The following examples do not apply to theAdventureWorksLTseries of sample databases. SQL IF NOT EXISTS(SELECT*FROMsys.columnsWHEREobject_id = OBJECT_ID('[Sales].[SalesOrderHea...
Session-based sqlbatch Simple type sqlCompareOptionsList sqlTypes Simple types sqlCompareOptionsList sqlDbTypeEnum sqlTypes Single sqlbatch SOAP requests examples SOAP responses examples sqlbatch session-based single sqlbatchSoapIn (section 2.2.2,section 2.2.2.1) ...
embedding in PL/SQL, 15-20 locks, 24-29 parallel DDL, 23-3 parsing with DBMS_SQL, 15-20 processing statements, 15-15 roles and privileges, 27-21 data dictionary access to, 2-3 adding objects to, 2-5 ALL prefixed views, 2-6 audit trail (SYS.AUD$), 2-5 backups...
SQL Server Azure SQL Database Azure SQL Managed Instance Returns size and fragmentation information for the data and indexes of the specified table or view in the SQL Server Database Engine. For an index, one row is returned for each level of the B-tree in each partition. For a heap, on...