Oracle cursor for updating every row in same table

Oracle cursor for updating every row in same table

You could create a trigger on table B that updates table A every time field_2 on table B is updated.

There can be a situation where you have to use a cursor, even though the experts say not to use cursors or to avoid them as much as possible.

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Error Banner.fade_out.modal_overlay.modal_overlay .modal_wrapper.modal_overlay [email protected](max-width:630px)@media(max-width:630px).modal_overlay .modal_fixed_close.modal_overlay .modal_fixed_close:before.modal_overlay .modal_fixed_close:before.modal_overlay .modal_fixed_close:before.modal_overlay .modal_fixed_close:hover:before. The DECLARE statement declares a cursor and associates it with a SELECT statement that retrieves the rows to be traversed by the cursor.Cursor declarations must appear after variable and condition declarations but before handler declarations.If one of these conditions occurs, the specified statement executes.The statement can be a simple statement such as SET var_name = value, or a compound statement written using BEGIN and END.

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If this is something you need to do all the time, I would suggest something else, but for a one-off or very small tables it should be sufficient.

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