If the data in one of the tables in your database meets the following criteria, you should consider creating a partitioned table.1. There is a lot of data in a table in the database. What are many concepts? 10,000 lines? 20,000 lines? Or 100,000 or 1 million? This, I think is the question of the benevolent see and the beholder. Of course, when the data in the data table
Copy a table to another table, view, and temporary table. create a new_table table with the same structure as an old_table table without the old_table record. create table new_table as select * from old_table where 1 = 0; create a
Tags: arp statement drop function Targe using the copy NSA indexMy Russian name is "do not toss uncomfortable", so, do not put the partition table A good toss, I am not comfortable. In the previous section, we discussed how to create a partitioned table directly and how to convert a normal table into a partitioned table
1. Create a temporary tableA temporary table is a table, used to temporarily save some dataCharacteristics:Visible only to the user who created the temporary table ;When the session ends, MySQL automatically deletes the temporary table.The core of the temporal table: very little consumption of resources for building ta
My Russian name is "do not toss uncomfortable", so, do not put the partition table A good toss, I am not comfortable.In the previous section, we discussed how to create a partitioned table directly and how to convert a normal table into a partitioned table. So what's the difference between these two ways of creating a
{{Todo.text}} This article is from the "Yan" blog, please be sure to keep this source http://suyanzhu.blog.51cto.com/8050189/1895527Vuejs v-for directive
Configure less on the WebstormFirst, the global installation of lessNPM Install Less-gThen, configure the less plugin on Webstorm, "File"--"settings"--"Tools" In "File Watchers"--"+"-"less" In "program" to fill in the less installation path;In the
CamelCase (hump type) and. Kebab-case (Dash type)HTML attributes are case-insensitive. So, when not using a string template, the camelcased (camel) named prop needs to be converted to the corresponding kebab-case (Dash-delimited)
Event modifiersCalled event.preventDefault() or event.stopPropagation() is a very common requirement in an event handler. Although we can easily achieve this in methods, the better way is that methods has only pure data logic, not the details of DOM
First, the use of reason 1, the template expression is convenient, but in fact, only for simple operations, not suitable for putting too many logical operations, such as:{{message.split ("). Reverse (). Join (')}}So: Any complex logic, you should
1> Environment ConstructionNode-v cnpm-vCNPM Install--global VUE-CLIVue Init webpack Project name Select all nCD to ProjectCNPM Install installation Project dependentNPM Run Dev RunsModify the port number--build folder under Dev-server.js file var
1, https://www.zhihu.com/question/263782718/answer/274623434 (Vue apart from Spa (single page app) also apply to what type of website? )and a project to adopt what front-end framework, not based on the amount of data, but based on the structure of
# Global Installation Vue-cli$ NPM install-g vue-cli# Create a new project based on the "Webpack" template$ vue init webpack My-project# Install dependencies, walk youCD My-project$ NPM Install$ npm Run DevAfter using Vue to build the project, NPM
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