() ' 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 A
CREATETYPEdbo.typeTableDASTABLE( Column1INTNOTNULLINDEXix1, Column2CHAR(10))WITH(MEMORY_OPTIMIZED =ON); 大功告成。 E. SQL Server 的必要條件 FILEGROUP 在Microsoft SQL Server 上,若要使用記憶體優化功能,您的資料庫必須具有以MEMORY_OPTIMIZED_DATA宣告的 FILEGROUP。
2453 Allows a table variable to trigger recompile when enough number of rows are changed. For more information, see KB2952444.Note: Ensure that you thoroughly test this option, before rolling it into a production environment. Starting with SQL Server 2019 (15.x), this became table variable de...
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...
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...
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...
[AS]table_alias[( column_alias [ , n]) ] [WHERE <search_condition>] [OPTION ( <query_hint> [ , n]) ] 2. FORCESEEK 提示 FORCESEEK 是一个新的表提示(Table Hints),它用来指定 SQL Server 查询优化程序如何更高效的执行查询。该提示指示优化程序对查询引用的表和视图通过索引检索来作为唯一的查询...
ADDCONSTRAINTPK_IDPRIMARYKEY(ID) Transactions and table variable in SQL Server Transactions are the smallest logical unit that helps to manage theCRUD(insert, select, update and delete) operations in the SQL Server. Explicit transactions are started with BEGIN TRAN statement and they can be complet...
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)...
server_name Applies to: SQL Server 2008 (10.0.x) and later.Is the name of the linked server on which the table or view is located. server_name can be specified as a linked server name, or by using the OPENDATASOURCE function.When server_name is specified as a linked server, database_...