Define Table variable with Non-Clustered index: 1 2 3 4 5 6 DECLARE @dbrnd TABLE ( ID INT PRIMARY KEY ,Name NVARCHAR(20) ,INDEX idx_dbrnd_Name NONCLUSTERED (Name) ) SQL Puzzle: Delete Duplicate Data without Primary key, ROW_NUMBER()SQL Server: Script to PINTABLE and UNPINTABLE (Keep...
TableVariableTransactionsDoNotSupportParallelNestedTransaction 資料表變數交易不支援平行巢狀交易。 DMLQueryReturnsOutputToClient DML 查詢將輸出傳回用戶端且不可平行。 MixedSerialAndParallelOnlineIndexBuildNotSupported 針對單一線上索引組建之不支援的序列和平行計畫混合。 CouldNotGenerateValidParallelPlan 驗證平行計畫...
在SQL Server Management Studio提供的查询分析器中,可以定义Transact-SQL的CREATE TABLE语句创建数据表。其语法格式如下:CREATE TABLE [ database_name . [ schema_name ] . | schema_name . ] table_name ( { <column_definition> | <computed_column_definition> } [ <table_constraint> ] [ ,...n ] ...
DeclareTableVariableBody DeclareTableVariableStatement DeclareVariableElement DeclareVariableStatement DefaultConstraintDefinition DefaultLiteral DelayedDurabilityDatabaseOption DelayedDurabilityOptionKind DeleteMergeAction DeleteSpecification DeleteStatement DeleteUpdateAction DenyStatement DenyStatement80 DeviceInf...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft FabricA heap is a table without a clustered index. One or more nonclustered indexes can be created on tables stored as a heap. Data is stored in the heap without specifying an order. Usually dat...
For example, the following partition switching code will not work with CDC enabled on the database, or with TableA participating in a transactional publication: SQLCopy DECLARE@SomeVariableINT= $PARTITION.pf_test(10);ALTERTABLEdbo.TableASWITCHTOdbo.TableBPARTITION@SomeVariable; ...
ALTERTABLE@TestTable 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...
{//Connect to the local, default instance of SQL Server.Server srv; srv =newServer();//Reference the AdventureWorks2022 database.Database db; db = srv.Databases["AdventureWorks2022"];//Declare another Table object variable and reference the EmployeeDepartmentHistory table.Table tbea; tbea = db...
literal_constant 可以是任意可表达为文本常量的 SQL Server 系统数据类型。literal_constant的数据类型必须可隐式转换为@variable_name在查询中引用的数据类型。 OPTIMIZE FOR 可能会对优化器的默认参数检测行为起反作用。 也可以在创建计划指南时使用OPTIMIZE FOR。 有关详细信息,请参阅重新编译存储过程。
( @variable_name{UNKNOWN| =<literal_constant>} [ , ...n ] ) |OPTIMIZEFORUNKNOWN|PARAMETERIZATION{SIMPLE|FORCED} |QUERYTRACEON<integer_value>|RECOMPILE|ROBUSTPLAN|USEHINT(<use_hint_name>[ , ...n ] ) |USEPLANN'<xml_plan...