demand

建立物化视图步骤： 步骤1、建立物化视图日志 SQL> create materialized view LOG on service_t with primary key; 步骤2、建立物化视图 SQL> create materialized view oscar refresh fast on commit with primary key disable query rewrite as select poid_id0 from service_t; Materialized view created. 步骤3、删除物化视图 删除物化视图日志： DROP MATERIALIZED VIEW LOG ON DAVE; 删除物化视图 ： DROP MATERIALIZED VIEW MV_DAVE; 步骤4、查询物化视图状态 SQL> SELECT MVIEW_NAME, LAST_REFRESH_DATE, STALENESS FROM USER_MVIEWS; SQL> SELECT NAME, LAST_REFRESH FROM USER_MVIEW_REFRESH_TIMES; 参考博文： http://blog.csdn.net/tianlesoftware/article/details/4713553 来源： oschina 链接： https://my

You Are a Product MONDAY, DECEMBER 6, 2010 I had a revelation the other day. I realized that the terms "programmer" and "employee" are inadequate to describe what I am. What I am is a product, and you are one too. If you want to develop your career, you need to approach your career as a product development problem. You sell yourself for various things: money, status, the opportunity to work on interesting problems, good coworkers, etc. In this post I'll be referring to this as "getting paid", but please keep in mind that "getting paid" means more than just money. Supply and Demand Like any

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to make a density plot of the hourly demand: data The 'hr' means different hours, 'cnt' means demand. I know how to make a density plot such as: sns.kdeplot(bike['hr']) However, this only works when the demand for different hours is unknown. Thus I can count each hour as its demand. Now I know the demand count of each hour, how I can make a density plot of such data? 回答1: A density plot aims to show an estimate of a distribution. To make a graph showing the density of hourly demand, we would really expect to see many iid samples

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Has anyone built a project that has Enable On Demand Resources set to YES for frameworks linked to the project. Most of the catalog assets in the app I'm working on are kept and brought into the project in frameworks and I get build error Target '<Framework/Bundle>Name' has on-demand resources enabled (ENABLE_ON_DEMAND_RESOURCES = YES), but it is not supported for framework target types. and unable to compile the project. 文章来源: iOS/Xcode enable On Demand Resources for Frameworks in project

wsdl.exe D:\XXX\demand\demand.20190621\wsdl\XXX.wsdl /out:D:\XXX\demand\demand.20190621\wsdl\class 在 vs tools：Developer Command Prompt For VS2019/2017 里执行上边命令。 来源： https://www.cnblogs.com/hofmann/p/11758975.html

PAT B1020/A070 Mooncake 题目描述： 　　Mooncake is a Chinese bakery product traditionally eaten during the Mid-Autumn Festival. Many types of fillings and crusts can be found in traditional mooncakes according to the region's culture. Now given the inventory amounts and the prices of all kinds of the mooncakes, together with the maximum total demand of the market, you are supposed to tell the maximum profit that can be made. 　　Note: partial inventory storage can be taken. The sample shows the following situation: given three kinds of mooncakes with inventory amounts being 180, 150, and 100 thousand