环境:RHEL6.5 + Vertica7.1.0-3 1.故障现象 2.重装集群 3.再次定位 4.解决问题 5.总结 1.故障现象 故障现象:Vertica集群安装成功,但是创建数据库后一直无法up. 具体报错输出如下: Starting Vertica on all nodes. Please wait, databases with large catalogs may take a while to initialize. Node Status: v_wnop_node0001: (
You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? 这个爬梯子问题最开始看的时候没搞懂是让干啥的,后来看了别人的分析后,才知道实际上跟斐波那契数列非常相似,假设梯子有n层,那么如何爬到第n层呢,因为每次只能怕1或2步,那
在用navacat建好表之后,需要主键自增的时候,把字段建好之后,可以使用下面的sql来建立主键自增. ALTER TABLE "public"."chart_sql" ADD PRIMARY KEY ("id");DROP SEQUENCE IF EXISTS "chart_sql_id_seq";CREATE SEQUENCE chart_sql_id_seq START WITH 1 INCREMENT BY 1 NO