sql server - Transaction isolation for sql statements -

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Can you determine the isolation level for plain SQL statements in the stored procedure in SQL Server 2005/2008? Case 1: (This will work fine) 
  Start the construction process as MySpace Transparency insulation level Read unwanted tran read selected * MyTable COMMIT Case 2: (Is this isolation stuff works here?)  
  Start the construction process as MySp to read the translation escalation level Cancel Select * MyTable from END   
 If case 2 is correct, then this is what many Ynit will also work for the statements?  
  
 
 
 If you  a Transposition Assaltion Level  in a stored procedure, this transaction isolation Level is used for the period of the stored proc as per:  
 
 If you release or translate the SET Transformation Aslomation level in a stored procedure, when the object controls the return control Isolation level is applied to that object when ob Joint applies.   
 Setting the transaction isolation level is not the same as starting a transaction. Transaction tells SQL Server to control locking of isolation level.  
 If you have only one option with a READ UNCOMMITTED transaction isolation level, then putting them in all transactions will not be the practical difference.  
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