嵌套循环块中的MySQL语法错误。无法找到错误。

Question

我尝试将一个简单的嵌套循环编码为mysql块。服务器给我一个语法错误，但我找不到它。

有人看到了吗？

错误消息是： 查询：END LOOP get_invoice

错误代码：1064 您的SQL语法有错误;检查与您的MySQL服务器版本相对应的手册，以获得正确的语法，以便使用“END LOOP get_invoice”＃39;在第1行

BEGIN 
        DECLARE v_id INT DEFAULT 0;
        DECLARE v_finished1 INT DEFAULT 0;
    DECLARE invoices_cursor CURSOR FOR 
        SELECT id_invoice FROM invoice i WHERE invoice_type = 'RE' AND EXISTS (SELECT 1 FROM invoice ma WHERE invoice_type = 'MA' AND ma.origin = i.id_invoice);        
    DECLARE CONTINUE HANDLER 
        FOR NOT FOUND SET v_finished1 = 1;
    OPEN invoices_cursor;
    get_invoice: LOOP
        FETCH invoices_cursor INTO v_id;

        IF v_finished1 = 1 THEN          
            CLOSE invoices_cursor;
            LEAVE get_invoice;
        END IF;  
        DECLARE v_finished2 INT DEFAULT 0;
        DECLARE v_dunning_level INT DEFAULT 1;              
        DECLARE dunning_cursor CURSOR FOR 
            SELECT id_invoice FROM invoice ma WHERE invoice_type = 'MA' AND ma.origin = v_id ORDER BY `create` ASC;     
        DECLARE CONTINUE HANDLER 
        FOR NOT FOUND SET v_finished2 = 1;              
        OPEN dunning_cursor;
        get_dunnings: LOOP
            DECLARE v_id_dun BIGINT DEFAULT NULL;                       
            FETCH dunning_cursor INTO v_id_dun;         
            IF v_finished = 1 THEN 
                LEAVE get_dunnings;
            END IF;      
            UPDATE invoice SET dunning_level = v_dunning_level WHERE invoice_type = 'MA' AND id_invoice = v_id_dun;
            SET v_dunning_level = v_dunning_level + 1;                      
        END LOOP get_dunnings ;
        CLOSE dunning_cursor;

    END LOOP get_invoice ;
END;