Why are we going for cursor, can't we use procedure instead?

[arumurali]

Yes I know cursor is a private area where SQL commands are executed and we can use them for further use. Even the procedure is used to perform an action and it may or may not return a value. Also, i have heard that using cursor makes the process slow. Can anyone help me out on this?

[rski]

Usually you use cursor for fetching data from tables. When you create procedure and you want to get some data from table you also have to create cursor, you do it explicite or implicite.

[Rabbit]

Which one you use depends on the specifics of what you're trying to do. Since we have no specifics, there's no recommendations we can make.

[arumurali]

Thanks for your response friends.

@rski--> Again my doubt is can't we use procedure to fetch data from the table, is cursor a necessary one to go?

[rski]

Even when you fetch data from table in procedure you use cursor ..
For example if you write

for v in (select ....) loop
...
end loop;
 

oracle defines cursor.

[arumurali]

So oracle defines cursor by default is what i got..Is that rite rski..?

[rski]

You can define it explicite with CURSOR 'command' or implicite as I show in the example. In both oracle will create cursor

[arumurali]

That was much helpful rski..

Thanks for your time..!!