A batch-scoped transaction that is not committed or rolled back when a batch completes is automatically rolled back by SQL Server. Step 3: Select Students table, all records has been deleted successfully. The Begin Transaction statement is the start point of an explicit transaction and increments TRANCOUNT by 1. SQL Server operates in the following transaction modes:Įach individual statement is a transaction.Įach transaction is explicitly started with the BEGIN TRANSACTION statement and explicitly ended with a COMMIT or ROLLBACK statement.Ī new transaction is implicitly started when the prior transaction completes, but each transaction is explicitly completed with a COMMIT or ROLLBACK statement.Īpplicable only to multiple active result sets (MARS), a Transact-SQL explicit or implicit transaction that starts under a MARS session becomes a batch-scoped transaction. Each transaction is explicitly started with the BEGIN TRANSACTION statement and explicitly ended with a COMMIT or ROLLBACK statement. In case of Azure SQL Managed Instance, the distributed transaction is managed by the service itself and not MS DTC. When using SQL Server the distributed transaction is managed by Microsoft Distributed Transaction Coordinator (MS DTC). Each individual statement is a transaction. Transactions group a set of tasks into a single execution unit. Specifies the start of a Transact-SQL distributed transaction. If a transaction encounters errors and must be canceled or rolled back, then all of the data modifications are erased. SQL Server operates in the following transaction modes: Autocommit transactions. If a transaction is successful, all of the data modifications made during the transaction are committed and become a permanent part of the database. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW)Ī transaction is a single unit of work.
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