让数据库跑的更快的7个MySQL优化建议！
让数复制mysql> explain format=json selectavg(k) from sbtest1 where id between 1000 and 2000 \G
让数复制mysql> explain format=json selectavg(k) from sbtest1 where id between 1000 and 2000 \G
让数复制mysql> explain format=json selectavg(k) from sbtest1 where id between 1000 and 2000 \G