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Cursors

A cursor is a structure that allows you to go over records sequentially, and perform processing based on the result.

Title	Description
Cursor Overview	Structure for traversing and processing results sequentially.
DECLARE CURSOR	Declares a cursor which can be used inside stored programs.
OPEN	Open a previously declared cursor.
FETCH	Fetch a row from a cursor.
CLOSE	Close a previously opened cursor.

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https://mariadb.com/kb/en/programmatic-compound-statements-cursors/