Cursor for updating records
In any database, mismanagement of transactions often leads to contention and performance problems in systems that have many users.As the number of users that access the data increases, it becomes important to have applications that use transactions efficiently.In this example, we need to update the sales price of each record.We will pass the increased rate and use a cursor to update each record.To create a gap, delete employee record from the #Employee table with id = 2 by the following script: RESULT: Now let us run the example 1’s approach 1 and 2 script on #Employee table which is having gap in the Id column value (i.e. From the above result it is clear that the example 1’s approach 1 and 2 script will not work in the scenarios where we have gap in the looping tables column values.This problem can solved in multiple ways, below are two such example approaches. Approach 1: Looping through table records where looping column has gaps in the value RESULT: Now let us run the example 2’s approach 1 and 2 script on #Employee table which is having duplicate Id column values (i.e.ID FROM Foo1 AS F WHERE Exists (SELECT Field1, Field2, Count(ID) FROM Foo1 WHERE Foo1.
All internal data structures, such as B-tree indexes or doubly-linked lists, must be correct at the end of the transaction.The HTML5 Indexed DB is still in the working draft stage and not fully implemented in major Internet browsers yet.Nevertheless, I tried to use its asynchronous API to develop a Google Maps application.Let me first address the case where the table does not have a unique key. as an integer, and make it an identifier column by checking the identity box in the table design window.