转载:http://langgufu.iteye.com/blog/1974211 Problem Description:1.每个表的结构及主键索引情况2.每个表的count(*)记录是多少3.对于创建索引的列,索引的类型是什么?count(distinct indexcol)的值是多少?4.最后一次对表进行分析是在什么时间,分析后,是否又对相关表做过大的操作5.索引最后一次rebuild,是在什么时间,此后对表的操作类型又是什么状况?索引中浪费的空间是多少?6.这些表的存储情况,表的存储参数…
Given a Weighted Directed Acyclic Graph and a source vertex in the graph, find the shortest paths from given source to all other vertices. For a general weighted graph, we can calculate single source shortest distances in O(VE) time using Bellman–For…
--数据字典表select * from v$fixed_table;select * from v$fixed_view_definition;select * from dictionary; --基础信息select * from v$version;select * from v$license;select * from v$database;select * from v$instance;select * from v$sga; select * from v$spparamete…
错误信息 19/01/15 19:36:40 WARN consumer.ConsumerConfig: The configuration max.poll.records = 1 was supplied but isn't a known config. 19/01/15 19:36:40 INFO utils.AppInfoParser: Kafka version : 0.9.0-kafka-2.0.2 19/01/15 19:36:40 INFO utils.AppInfoParse…
2017-10-11 17:37:02.102 INFO c.u.a.r.PrepareDriver:41 - appium server url : http://127.0.0.1:4723/wd/hub java.lang.NoSuchMethodError: com.google.common.base.Throwables.throwIfUnchecked(Ljava/lang/Throwable;)V at io.appium.java_client.remote.AppiumCom…
更多精彩见微信公众号 at org.springframework.test.context.support.AbstractTestContextBootstrapper.buildMergedContextConfiguration(AbstractTestContextBootstrapper.java:379) at org.springframework.test.context.support.AbstractTestContextBootstrapper.buildDefaultM…
本文转自:慧都控件网 说到MariaDB,这个数据库算是MySQL的一个分支.现在非常的流行,很多地方都能看到它的身影.MariaDB作为一种新的数据库管理系统,在短时间内获得如此高的关注度.这也是Devart花了很大功夫让dbForge Studio for MySQL支持MariaDB的原因. 下面我们来看看这次版本跟新所涉及到的变化: 数据库连接的支持: MySQL 5.6 MySQL 5.7 MariaDB 5.5 MariaDB 10.0 支持MariaDB的虚拟列: Data Exp…
Time Limit: 132MS Memory Limit: 1572864KB 64bit IO Format: %lld & %llu Description You are given a sequence A[1], A[2], ..., A[N] . ( |A[i]| <= 10000 , 1 <= N <= 10000 ). A query is defined as follows: Query(x1,y1,x2,y2) = Max { A[i]+A[i+…