Updating a cursor dangerous in online dating

In this way, a cursor behaves very much like a queue, traversing the dataset in a FIFO (First In First Out) manner. After getting the current win/lose status and set the streak number, we continue to loop through (traverse) the remainder of the dataset.

With each loop iteration, the cursor will “point” to the next record until we break the loop or all the records are consumed.

Let’s create the first SP in My SQL Workbench as follows: In this SP, we have one input parameter and two output parameters. In the SP body, we also declared a few local variables to hold the streak status (win or lose, (the latest played games will have the highest ID) descending.

Though not displayed explicitly, we can imagine that this dataset will contain a series of “L”s and “W”s.

' customers selected '); END IF; END; / Select * from customers; ---- ---------- ----- ----------- ---------- | ID | NAME | AGE | ADDRESS | SALARY | ---- ---------- ----- ----------- ---------- | 1 | Ramesh | 32 | Ahmedabad | 2500.00 | | 2 | Khilan | 25 | Delhi | 2000.00 | | 3 | kaushik | 23 | Kota | 2500.00 | | 4 | Chaitali | 25 | Mumbai | 7000.00 | | 5 | Hardik | 27 | Bhopal | 9000.00 | | 6 | Komal | 22 | MP | 5000.00 | ---- ---------- ----- ----------- ---------- Explicit cursors are programmer-defined cursors for gaining more control over the context area.An explicit cursor should be defined in the declaration section of the PL/SQL Block.

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