Tag：Establish
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Time：2021-4-20
This paper introduces how to build an efficient index with MySQL. The details are as follows: How to build an ideal index? Query frequency discriminative power Index length Override field discriminative power Assuming 1 million users and 50 W for each gender, the discrimination is low. The length is small Index length directly affects the […]
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Time：2021-4-17
This article describes the Yii framework to create and set the default controller and load the template operation. The details are as follows: 1、 Create controller Create a custom controller file in the controllers folder under protected, for example: IndexController.php (initial of file name) IndexController.php Add the following code to the file: class IndexController extends […]
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Time：2021-3-1
This article mainly introduces the process diagram of creating interceptor by springboot. The example code is introduced in great detail, which has a certain reference learning value for everyone’s study or work. If you need a friend, you can refer to it 1、 Create a myinterceptor class that implements the handlerinterceptor interface 2、 Create a […]
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Time：2020-8-18
This video tutorial is mainly about the creation and application of windows virtual machine under Mac OS X 10.10 Yosemite system. It is made and edited by netizens. New Mac users are welcome to watch and learn:
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Time：2020-7-13
This paper analyzes the implementation method of SQL server to create database and data table. For your reference, the details are as follows: The syntax for creating constraints is as follows: CREATE DATABASE [test] ON (NAME=N’test’,FILENAME=N’d:\SQL2kt_Data\test.mdf’,SIZE=3mb,MAXSIZE=UNLIMITED,FILEGROWTH=1MB) LOG ON (NAME=N’test_log’,FILENAME=N’d:\SQL2kt_Data\test_log.ldf’,SIZE=1MB,MAXSIZE=2048MB,FILEGROWTH=10%) GO Term interpretation (translation) constraint 1. Constraint; restriction [C] [(+ on)] legal constraints on the company’s […]
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Time：2020-6-15
This article mainly introduces the principle of MySQL temporary table and the analysis of its creation method. In this article, the example code is introduced in detail, which has a certain reference learning value for your study or work. You can refer to the following for your friends MySQL can create a temporary table by […]
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Time：2020-6-5
The example of this article describes how to create web server by using HTTP package in go language. To share with you for your reference, as follows: There are two ways to write an HTTP web server in golang: Using net package net.Listen To monitor the port 2 use net / HTTP package Here is […]
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Time：2020-5-9
The example of this paper describes the operation methods of create procedure, call, declare and set of MySQL stored procedure. To share with you for your reference, as follows: Create procedure and call Let’s not talk about the definition of the term, just look at the example to get familiar with it. Let’s create a […]
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Time：2020-4-19
Forget mongodb installation. Please refer to: CentOS Yum to install mongodb and PHP extension 1、 Create, switch, delete database [[email protected] zhangy]# mongo MongoDB shell version: 2.4.6 connecting to: tank >Use test // create or switch databases switched to db test >DB. Dropdatabase() // delete database { “dropped” : “test”, “ok” : 1 } 2、 PHP […]
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Time：2020-4-8
Keyword Description: work ready to install & nbsp database user creation permission using software Explain some preparations before installing WordPress. WordPress installation process is very simple, but before installation, you need to do some necessary preparations. Software required during installationDon’t worry, the software needed here is not too big a problem for you. First of […]
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Time：2020-4-5
This paper gives an example of the usage of go Language Dictionary (map). To share with you for your reference, as follows: A dictionary is a built-in data structure that holds an unordered collection of key value pairs. (1) Dictionary creation 1) make(map[KeyType]ValueType, initialCapacity) 2) make(map[KeyType]ValueType) 3) map[KeyType]ValueType{} 4) map[KeyType]ValueType{key1 : value1, key2 : value2, […]
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Time：2020-1-12
To create a soft link is to use the Ln-S original file or folder target file or folder Note: because of the limited space, do not change the original program file, and then continue to read the contents of / data / ftp directory, only need to establish a soft connection on / data2 / […]
