接上一篇 AWS MySQL 升级(一)—— 对比各类方案及原理_pg跨库查询-CSDN博客,由于操作步骤太多,单独拆出来一份。 零、 预检查
主库event_scheduler参数,应该为0
show variables like %event_scheduler%;
binlog保留…
题目描述
The cows are having a picnic! Each of Farmer Johns K (1 ≤ K ≤ 100) cows is grazing in one of N (1 ≤ N ≤ 1,000) pastures, conveniently numbered 1...N. The pastures are connected by M (1 ≤ M ≤ 10,000) one-way paths (no path connects a pasture…