CREATE PROCEDURE prod(IN in_count INT)
BEGIN
DECLARE COUNT INT DEFAULT 0;
WHILE COUNT < in_count DO
insert demo select * from demo;
SET COUNT = COUNT + 1;
END WHILE;
#SELECT SUM;
END;
insert语句将demo表复制一遍,初始demo表中只有一条数据, 循环23次得2^n,一千万条数据