Applies to: SQL Server 2008 (10.0.x) and later versions, Azure SQL Database, Azure SQL Managed Instance, Azure Synapse Analytics, Analytics Platform System (PDW) The following example shows the effect of rolling
SQL 复制 USE AdventureWorks2022; GO IF EXISTS (SELECT name FROM sys.objects WHERE name = N'SaveTranExample') DROP PROCEDURE SaveTranExample; GO CREATE PROCEDURE SaveTranExample @InputCandidateID INT AS -- Detect whether the procedure was called -- from an active transaction and...
Applies to: SQL Server 2008 (10.0.x) and later versions, Azure SQL Database, Azure SQL Managed Instance, Azure Synapse Analytics, Analytics Platform System (PDW) The following example shows the effect of rolling back a transaction. In this example, the ROLLBACK statement rolls back the INSERT...
When the batch completes, if the batch-scoped transaction is not committed or rolled back, it is automatically rolled back by SQL Server. For more information, see Multiple Active Result Sets (MARS) in SQL Server. Starting Transactions Using API functions and Transact-SQL statements, you can ...
In SQL Server 2014 (12.x) and later versions, if the next growth is less than 1/8 of the current log physical size, then create 1 VLF that covers the growth size. If growth is less than 64 MB, create 4 VLFs that cover the growth size (for example, for 1-MB growth, create 4 ...
For example, if BEGIN DISTRIBUTED TRANSACTION is issued on ServerA, the session calls a stored procedure on ServerB and another stored procedure on ServerC. The stored procedure on ServerC executes a distributed query against ServerD, and then all four computers are involved in the distributed...
If growth is less than 64 MB, create 4 VLFs that cover the growth size (for example, for 1-MB growth, create 4 VLFs of size 256 KB). In Azure SQL Database, and starting with SQL Server 2022 (16.x) (all editions), the logic is slightly different. If the growth is les...
The following example shows the effect of rolling back a named transaction. After you create a table, the following statements start a named transaction, insert two rows, and then roll back the transaction named in the variable@TransactionName. Another statement outside of the named transaction in...
If you issueSET TRANSACTION ISOLATION LEVELin a stored procedure or trigger, when the object returns control the isolation level is reset to the level in effect when the object was invoked. For example, if you setREPEATABLE READin a batch, and the batch then calls a stored procedure that se...
A transaction running under SNAPSHOT isolation level can view changes made by that transaction. For example, if the transaction performs an UPDATE on a table and then issues a SELECT statement against the same table, the modified data will be included in the result set....