Commonly used select statements to view mysql system parameters
The buffer pool size 393215 this is a page, not a byte.
To see the buffer pool size in GB, run the following command:
SELECT FORMAT(BufferPoolPages*PageSize/POWER(1024,3),2) BufferPoolDataGB FROM
(SELECT variable_value BufferPoolPages FROM information_schema.global_status
WHERE variable_name = 'Innodb_buffer_pool_pages_tota ...
Posted by freakstyle on Tue, 31 Mar 2020 17:39:59 -0700
Detailed examination papers
Because of the data problem in the database, it is not as good to take blank pages as the prototype image on the board:
Body Code:
<div *ngFor="let q of qt.questionMainList; let i=index" [ngSwitch]="qt.questionTypeId">
<div *ngFor="let qtl of questionTypeList; let k=index">
<div *ngIf="qt.quest ...
Posted by tommyrulez on Tue, 31 Mar 2020 14:54:18 -0700
Android adds pictures and alarm clocks to the database and displays them with listview 2
Android adds pictures and alarm clocks to the database and displays them with listview 2
Novice on the road, please give me more advice
Continue last time, the teacher proposed to add two more alarm clocks. Although it was not satisfactory, it also made
Because it's not so hard for a novice to simplify his intelligen ...
Posted by BAM1979 on Tue, 31 Mar 2020 14:33:17 -0700
Mysql Event scheduling history
Mysql Event scheduling history
The current mysql version does not have Event execution history information. In order to check whether the Event is executed normally and the execution result conveniently, the following two steps can be used:
1, Create job execution Event history table
CREATE TABLE `mysql`.`t_event ...
Posted by Danicek on Tue, 31 Mar 2020 11:51:26 -0700
SQL basic bullet 2
Prepare data:
– create a "shop" Database
CREATE DATABASE shop CHARSET=utf8;
– use "Jingdong" Database
use shop;
– create a goods data table
Insert data (if you don't understand the meaning of each field name, read the insert data below, you will understand it, but you still ...
Posted by v00d00 on Tue, 31 Mar 2020 11:28:01 -0700
GitLab backup and recovery
Because the company changed the server service provider and the server was migrated to another service provider, today we will simulate the operation of online migration of gitlab
git-A IP:192.168.82.184
git-B IP:192.168.82.184
If the version number is the same, the backup migration will fail
Step 1.gitlab backup gita-A
#c ...
Posted by vichiq on Tue, 31 Mar 2020 10:54:28 -0700
HPU timetable software of Henan University of Technology
HpuTimetableAPI
Background open interface of [HPU timetable] software
It includes the whole course library of the second semester 2017-2018 of Henan University of technology
23 colleges, 901 classes, 5647 courses, 20241 course records
Rubbing class function
Sharing courses
Scan code import
course management
Course library ma ...
Posted by solus on Tue, 31 Mar 2020 08:20:54 -0700
Simple configuration and database connection of NodeJS build project
Simple configuration and database connection of NodeJS build project
The main contents are as follows:
Load exprss module
Create app app
Load template processing
Set up static file hosting
Load database module
Blog offline
Processing post requests
Cookie settings
Load exprss module
var express = require('express ...
Posted by keevitaja on Tue, 31 Mar 2020 06:57:39 -0700
Unit testing with JUnit in Intellij
These days, I'm groping for Intellij idea to record some small knowledge points.
First contact with Intellij and use Hibernate framework to operate mysql database. If you want to use unit test in Intellij, you know that Junit is needed, but it is not found by default.
How to solve it?
>>First, go to settings an ...
Posted by devx on Tue, 31 Mar 2020 05:54:40 -0700
PyQt5 building library management system (3) -- Design of login page
PyQt5 building library management system (3) -- Design of login page
PyQt5 building library management system (3) -- Design of login page
Analysis
Code:
The effect is as follows
Analysis
The logic of the login page is simple, as follows:
-User input student number and password (for security, plus input ...
Posted by swissmant on Tue, 31 Mar 2020 02:03:39 -0700