Questions On Sql Server

What is difference between SUBSTR and INSTR in the SQL? stick on by: Tripati_tutu The SUBSTR author returns a specific portion of a string deterrent example: SUBSTR(DotNetFunda,6) The root giveing be: DotNet The INSTR function provides character go under in a pattern of string. manikin: INSTR(Dot-Net-Funda,-,2) The result will be: 8 (2nd occurrence of -) What is a Database Trans transaction? stick on by: Tripati_tutu A Database Transaction is a logical unit of database operations and a unit of work in database commission system. These be highly important to use dealings when operative with databases. In this the SQL statement is treated as a transaction and will be automatically committed immediately afterward it is successfully executed. For this successful transaction that is from begin to end transaction, it follows the frontier corrosive (Atomicity, Consistency, Isolation, Durability). To implement Database Transaction we have to follow the avocation 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 riddances 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 other schedule language like JAVA, C# etc. Example: pose TRY RAISERROR (A caper is raised, 16,1) END TRY BEGIN CATCH S! ELECT 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 micturate of the stored procedure or trigger where the error occurred....If you want to loll around a full essay, order it on our website: OrderCustomPaper.com

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