FETCH
Syntax
FETCH cursor_name INTO var_name [, var_name] ...
Description
This statement fetches the next row (if a row exists) using the specified open cursor, and advances the cursor pointer.
var_name can be a local variable, but not a user-defined variable.
If no more rows are available, a No Data condition occurs with SQLSTATE value 02000. To detect this condition, you can set up a handler for it (or for a NOT FOUND condition).
See Cursor Overview for an example.
See Also
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https://mariadb.com/kb/en/fetch/