A minimally logged operation is performed in the database; for example, a bulk-copy operation is performed on a database that is using the Bulk-Logged recovery model. Database files have been added or removed by using ALTER DATABASE. An instance of SQL Server is stopped by a SHUTDOWN sta...
For example, using the Microsoft® OLE DB Provider for SQL Server to access a database on Microsoft SQL Server 2000, you can create multiple nested transactions for the commands you execute.ADO ensures that changes to a data source resulting from operations in a transaction occur successfully ...
Parallel transactions are supported by SQL Server Compact, even for multiple active result sets but parallel transactions are not supported by SQL Server. TransactionScope Example 1 The following example shows how to use TransactionScope to enlist and then commit the transaction. ...
For example, given this DELETE statement: SQL Copy DELETE mytable WHERE name = 'Bob'; An exclusive (X) lock is placed on the index entry corresponding to the name Bob. Other transactions can insert or delete values before or after the row with the value Bob that is being deleted. ...
SQL复制 USEAdventureWorks2022; GO IF EXISTS (SELECTnameFROMsys.objectsWHEREname= N'SaveTranExample')DROPPROCEDURESaveTranExample; GOCREATEPROCEDURESaveTranExample @InputCandidateIDINTAS-- Detect whether the procedure was called-- from an active transaction and save-- that for later use.-- In the ...
Applies to:SQL Server, Azure SQL Database, Azure Synapse Analytics, and Analytics Platform System (PDW) The following example deletes a job candidate. SQL BEGINTRANSACTION;DELETEFROMHumanResources.JobCandidateWHEREJobCandidateID =13;COMMITTRANSACTION; ...
In the ATM withdraw example, the SQL Server Engine will commit the overall transaction, including the amount deduction from the bank account, when all the steps are performed successfully, and the money received by the user. To handle the concurrency, the SQL Server Engine holds a lock on the...
transaction_name是可选的,用于指定事务的名称。如果未指定事务名称,则 SQL Server 会自动生成一个唯一的事务名称。 代码示例 下面是一个使用BEGIN TRANSACTION开始事务的示例代码: BEGINTRANSACTION;INSERTINTOCustomers(FirstName,LastName,Email)VALUES('John','Doe','john.doe@example.com');UPDATEOrdersSETStatus='...
"Server: Msg 3920, Level 16, State 1, Line 3" "WITH MARK option only applies to the first BEGIN TRAN WITH MARK." "The option is ignored." Permissions Requires membership in the public role. Examples A. Naming a transaction The following example shows how to name a transaction. ...
The Microsoft SQL Server Database Engine uses a dynamic locking strategy to determine the most cost-effective locks. The Database Engine automatically determines what locks are most appropriate when the query is executed, based on the characteristics of the schema and query. For example, to reduce...