I have a node program that queries the local database every hour and then queries the intranet database again. only appears read ECONNRESET when querying the intranet database. use npm library knex + mysql2 to connect to the database, knex ...
I now have two tables An and B, in which the primary key of table An is a foreign key in B. now I want to query the number of each primary key in A plus all the data in table A. how do you write this? ...
system centos7.4, 2 core 4G 2m Wordpress, built by Aliyun usually 2000PV 1000IP every day, recently the website access is super slow, please see what s wrong with me, thank you! < H2 > usr local php var log php-fpm.log < H2 > [24-Sep-2018 01:27:26...
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 15720 milliseconds ago. The last packet sent successfully to the server was 6231 milliseconds ago...
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 15720 milliseconds ago. The last packet sent successfully to the server was 6231 milliseconds ago...
migrate the MySQL database from the local server to the Ali cloud server. The error deletes the MySQL user and recreates all users with the same username and password as the original user. Log in to Ali CVM, and you can log in to MySQL users and execu...
migrate the MySQL database from the local server to the Ali cloud server. The error deletes the MySQL user and recreates all users with the same username and password as the original user. Log in to Ali CVM, and you can log in to MySQL users and execu...
migrate the MySQL database from the local server to the Ali cloud server. The error deletes the MySQL user and recreates all users with the same username and password as the original user. Log in to Ali CVM, and you can log in to MySQL users and execu...
administartor user list {pageSize} {pageNum} {orderField} this is the last orderField given to me by the backstage URL, he said, pass id DESC and then I Baidu is the descending order in SQL. so what should I pass on this ...
Mysql database cannot be opened either ask the great god for advice! ...
it was fine before rebooting, but after rebooting, it will never be able to start again root@iZuf6acp86oa3jizjzwaqdZ:~-sharp service mysql start Job for mysql.service failed because the control process exited with error code. See "systemctl status...
now there are three servers, one database server, two business servers An and B, and the three servers have the same network segment, but the time for A to connect to the database is fast (less than 1 second). But B is slow to connect to the database (a...
in the same MySQL link attribute, it can also be said to be the same database. Can you configure all the table structures of one database and Synchronize of another database? is similar to master-slave Synchronize, but only needs Synchronize data stru...
in the same MySQL link attribute, it can also be said to be the same database. Can you configure all the table structures of one database and Synchronize of another database? is similar to master-slave Synchronize, but only needs Synchronize data stru...
as shown in the picture for example, there is a tourist itinerary "Shanghai to Hangzhou and Suzhou " 1. On the first day to Hangzhou, there are transportation, multiple scenic spots, food and accommodation information 2. To Suzhou on the second day,...
A new account report_root , has been opened in MySQL and only gives the database report_import permission to operate. this account can log in normally, but any database can be read after login. so log in with your root account and everythin...
when learning the database, I tapped at the code in the book, but it couldn t be implemented. I checked the source code and found no errors. as shown in the picture, this is the content of the book: : : : : this is the result even if you en...
some table in mysql, constantly inserting new data. But to prevent it from getting bigger, you need to execute the delete from statement at the same time to delete the old data before a certain point in time. now the problem is, when deleting, do not ...
1. At present, there is a pile of lists on hand. The fields are "time ", "region ", "point of sale ", "product " and "product ". They are grouped together under the condition of "point of sale ". The practice on excel is very simple, PivotTable, i...
as shown in the picture, when I get my son s information, how can I find out his father s grandfather s information through his pid? ...
problem description Select the multi-box in the table and add this item to the array, but if you click not to select it, it will also be added. How to solve the environmental background of the problems and what methods you have tried related codes...
< H2 > scene < H2 > A mobile web Mini Game based on canvas < H2 > process < H2 > in the andriod system, when the finger touches any position on the screen, the animation pauses, and the stutter effect is more obvious when you click continuously. ...
the company needs to call the short vibration of the phone. Previously, I saw that some posts using AudioServicesPlaySystemSound to call 3DTouch vibration will cause the approval to fail. can I use the AudioServicesPlaySystemSound function to play the s...
go directly to the code <script> import chat from . .. .. store modules chat export default { methods: { logout () { this.$Modal.confirm({ title: , loading: true, onOk: () => { ...
how do ue keep-alive cooperate with routing to implement the page of Amurb, cache the content of A, and then display it keep-alive and beforerouterLeave or beforerouterenter ...