() ' Connect to the local, default instance of SQL Server. Dim srv As Server srv = New Server() Dim db1 As Database = srv.Databases("TESTDB") ' Define a Table object variable and add an XML type column. Dim tb As New Table(db1, "XmlTable3") Dim mySample As...
{//Connect to the local, default instance of SQL ServerServer srv =newServer();//Reference the AdventureWorks2022 database.Database db = srv.Databases["AdventureWorks2022"];//Define a UserDefinedTableType object variable by supplying the//database and name in the constructor.UserDefinedTab...
对于ALTER TABLE ... SWITCH TO ... PARTITION ...语句,不支持在使用事务复制或变更数据捕获 (CDC) 发布的表上使用带有分区切换的变量。 例如,以下分区切换代码将不适用于启用了 CDC 的数据库,也不适用于参与事务发布的 TableA: SQL DECLARE@SomeVariableINT= $PARTITION.pf_test(10);ALTERTABLEdbo.TableASWI...
For more information, see the SQL Server and Azure SQL index architecture and design guide. The Database Engine automatically modifies indexes whenever insert, update, or delete operations are made to the underlying data. For example, the addition of rows in a table can cause existing pages in...
variable bit 可变长度数据类型为 1;否则为 0。 allownulls bit 指出此数据类型的默认为空性。如果 CREATE 或 ALTER TABLE 指定了为空性,那么该值将替代此数据类型的默认为空性。 type tinyint 物理存储数据类型。 printfmt varchar(255) 保留。 prec smallint 此数据类型的精度级别。 scale tinyint 此数据类型...
SQL Server Agent是SQL Server中的一个Windows 服务,该服务用来运行制定的计划任务。计划任务其实是在SOL Server中定义的一个程序,该程序不需要干预即可自动开始执行。与tempdb和model 数据库一样,在使用SQL Server时也不要直接修改msdb数据库,SOL Server中的一些程序会自动使用该数据库。例如,当用户对数据进行存储...
table and name// arguments in the constructor.varstat =newStatistic(tb,"Test_Statistics");// Define a StatisticColumn object variable for the CardType column// and add to the Statistic object variable.varstatcol =newStatisticColumn(stat,"CardType"); stat.StatisticColumns.Add(statcol)...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) Creates a relational index on a table or view. Also called a rowstore index because it is either a clustered or nonclustered B-tree index. You can create a rowstore ...
SERVER ROLE SERVICE CLAVE MAESTRA DE SERVICIO SYMMETRIC KEY TABLE TABLE column_constraint TABLE column_definition TABLE computed_column_definition TABLE index_option TABLE table_constraint TRIGGER USER VIEW WORKLOAD GROUP XML SCHEMA COLLECTION Copia de seguridad y restauración CREATE Intercalaciones DROP ...
-- Syntax for SQL Server and Azure SQL Database [ WITH <common_table_expression> [...n] ] UPDATE [ TOP ( expression ) [ PERCENT ] ] { { table_alias | <object> | rowset_function_limited [ WITH ( <Table_Hint_Limited> [ ...n ] ) ] } | @table_variable } SET { column_name...