A、truncate table tbl;
B、alter table tbl drop partition (p1='1');
C、insert into table tbl select * from tbl where 1=2;
D、delete from table tbl;
答案:B
A、truncate table tbl;
B、alter table tbl drop partition (p1='1');
C、insert into table tbl select * from tbl where 1=2;
D、delete from table tbl;
答案:B
A. 这两个表的join key至少有一列建立了主键
B. 这两个表在一个表组
C. 这两个表的joinkey是hash分区列
D. 两个表的Hash分区数必须一致
A. select instance_id, count(*) from information_schema.kepler_node_info where role = 'worker' group by instance_id having count(*) < 3;
B. select status,count(1) as cnt from information_schema.kepler_cstore_build_task_merged group by status
C. select server_addr,state from information_schema.KEPLER_CSTORE_RAFT_STATUS_MERGED
D. select shard_id,shard_name,task_id,status,update_time from kepler_meta_node_scale_shard_task
A. firewall
B. iptables
C. KVM
D. NUMA
A. A类
B. C类
C. D类
D. E类
A. 本月预算数
B. 本月预算执行数
C. 本月预算在途执行数
D. 本月预算未执行数
A. 10s,10m
B. 10m,10s
C. 1m,10m
D. 10m,10m
A. Tunnel upload表示上传文件
B. Tunnel download表示下载文件
C. Tunnel resume表示命令续传
D. Tunnel show表示显示历史任务
A. 正确
B. 错误
A. 正确
B. 错误
A. 共建互惠
B. 共建共享
C. 共通共荣
D. 互惠互利