Questions On Sql Server

What is difference between SUBSTR and INSTR in the SQL? affix by: Tripati_tutu The SUBSTR ply returns a specific portion of a string face: SUBSTR(DotNetFunda,6) The root leading be: DotNet The INSTR function provides character smudge in a pattern of string. representative: INSTR(Dot-Net-Funda,-,2) The result will be: 8 (2nd occurrence of -) What is a Database Trans follow out? affix by: Tripati_tutu A Database Transaction is a logical unit of measurement of database operations and a unit of work in database worry system. These be highly important to use proceedings when works with databases. In this the SQL statement is treated as a transaction and will be automatically committed immediately afterwards it is successfully executed. For this successful transaction that is from begin to end transaction, it follows the landmark corrosive (Atomicity, Consistency, Isolation, Durability). To implement Database Transaction we have to follow the followers stairs i.e. beginTransaction(); setTransactionSuccessful(); endTransaction(); What is misapprehension handling in stored procedures of SQL Server 2008? Posted by: Tripati_tutu In previous versions of SQL Server you would handle censures by checking the @@ defect global variable immediately after an INSERT, update or DELETE, and then perform some corrective action if @@error did not equal zero.

SQL Server 2005 provides structured exception handing through with(predicate) TRY CATCH block as new(prenominal) schedule language like JAVA, C# etc. Example: get going TRY RAISERROR (A caper is raised, 16,1) END TRY BEGIN CATCH ! SELECT ERROR_NUMBER() as ERROR_NUMBER, ERROR_SEVERITY() as ERROR_SEVERITY, ERROR_STATE() as ERROR_STATE, ERROR_MESSAGE() as ERROR_MESSAGE END CATCH ERROR_NUMBER() returns the number of the errors. ERROR_SEVERITY() returns the severity. ERROR_STATE() returns the error state number. ERROR_PROCEDURE() returns the urinate of the stored procedure or trigger where the error occurred....If you want to linger around a full essay, order it on our website: OrderCustomPaper.com

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