Programming VIP

Using EasyPoi to export a large amount of data to Excel This project is managed by maven. The dependencies of EasyPoi in the pom file are: <! - easypoi dependence - > The role of easypoi parent package is well known to all. 2.easypoi-annotation basic annotation package, whi ...

Links to the original text: https://my.oschina.net/u/1781072/blog/542610 1. MyBatis adds/deletes/alters/checks database tables The previous article uses XML-based approach to add/dele ...

<?phpclass mysql {OA Credit Disk Setting up q<319.135.503.1>private $db_host;//database hostprivate $db_user; // database usernameprivate $db_pwd; // database username passwordprivate $db_database; // database nameprivate $conn; // database connection identification;private $result; // Result resource identification for query command ...

PHP Implements Message Board Function for Small Programs (End) Next, the comment function is added to the above article. First, look at the effect map, as shown in the figure below. I didn't delete comments here, because I didn't do it as I did in the article. Okay, next is the comment function code.l ...

Article directory The directory structure is as follows The contents and explanations of each document are as follows To be perfect... The directory structure is as follows [root@server1 srv]# pwd /srv [root@server1 srv]# ls pillar salt [root@server1 srv]# tree . . ├── pillar │ ├── top.sls │ ...

Refer to the notes MySQL Stored Procedures and Function Creation and the official website on how MySQL creates and uses stored procedures: https://dev.mysql.com/doc/refman/5.7/en/create-procedure.html This main example uses stored procedures for input parameters and solves the problem of using table names as input parameters, since previously ...

In an awkward situation, SSMS's GridView support for large fields (varchar(max), text, etc.) is not very friendly.Characters beyond 8000 lengths, SSMS tables are not visible (of course, not visible), nor can they be directly exported (more than 8000 characters outside).This kind of problem is intolerable when others come to ask for help. So we ...

Author: Yang Taotao This paper introduces two import features of MySQL 8.0 shell sub-module Util, importTable/import_table (named difference between JS and python versions), and the usage of importJson/import_json. Import_table communicates through traditional MySQL protocol and Import_json communicates through X plug-in protocol. MySQL has a ...

I. Operating databases 1.1 Create a database 1.2 View the database 1.3 Modification of database 1.4 Delete the database 1.5 Select Database II. Operational Tables 2.1 Create tables 2.2 View Table 2.3 Amendment Table 2.4 Delete tables III. CRUD Recording of Operational Table 3.1 INSERT 3.2 UPDATE 3.3 DELETE 3. ...

Author: Yang TaotaoQuestion from customers: What are the methods of database validation? Can you tell him? Me: Direct percona toolkit is not enough.Client: Any software installed on the server must be reviewed, and how long it will be reviewed is uncertain. And open source software is not allowed. Me:... Okay, let's see how MySQL itself checks ...