Transact-SQL, SQL Server, SET TRANSACTION ISOLATION LEVEL.
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SET TRANSACTION ISOLATION LEVEL
{ READ UNCOMMITTED
| READ COMMITTED
| REPEATABLE READ
| SNAPSHOT
| SERIALIZABLE
}
READ UNCOMMITTED
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SQL Server 2008 :
READ COMMITTED READ_COMMITTED_SNAPSHOT, ON;
(SNAPSHOT).
READ COMMITTED
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READ COMMITTED READ_COMMITTED_SNAPSHOT.
READ_COMMITTED_SNAPSHOT OFF ( ), Database Engine . , , . .
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READ_COMMITTED_SNAPSHOT , ALTER DATABASE. ALTER DATABASE . .
REPEATABLE READ
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SNAPSHOT
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SERIALIZABLE
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SET TRANSACTION ISOLATION LEVEL , , . , REPEATABLE READ , , SERIALIZABLE, , REPEATABLE READ.
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. Transact-SQL SQL Server .
SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
GO
BEGIN TRANSACTION;
GO
SELECT *
FROM HumanResources.EmployeePayHistory;
GO
SELECT *
FROM HumanResources.Department;
GO
COMMIT TRANSACTION;
GO
