Course15816
Course Introduction:This course in "SQL Fun Class" can be used to learn databases or as review materials! ! There are basic questions in the course. It’s fun to do the questions step by step like a game. Let’s learn together! !
Course8236
Course Introduction:SQL (Structured Query Language) is used to manage relational database management systems (RDBMS). The scope of SQL includes data insertion, query, update and deletion, database schema creation and modification, and data access control.
Course49311
Course Introduction:"SQL Development Manual" is the latest official SQL online manual. In this sql document, you will learn how to use sql to access, process system data and other sql knowledge. It is an important reference manual for sql learners!
Course3374
Course Introduction:MySQL installation and configuration under Linux, database logical layering, parsing process, index, detailed analysis of SQL execution plan, principles to avoid index failure, optimization cases, common optimization strategies, slow SQL troubleshooting, simulation of massive data, lock mechanism, MySQL under windows and linux Master-slave replication.
Eliminate notification in WooCommerce stating "Checkout cannot be done when cart is empty".
2023-11-17 11:41:02 0 1 361
New title: New script does not correctly display strange character encoding of stored data
2023-11-17 10:51:01 0 2 273
2023-11-12 19:34:27 0 1 244
Encountered PHPMailer undefined type error (tried using Composer also didn't work)
2023-11-12 17:35:06 0 1 180
Stream data from OpenAI's API using AJAX, PHP, and server-sent events
2023-11-11 12:03:23 0 1 497
Course Introduction:Reasons for invalid column index in sql: 1. The placeholder is inconsistent with the number of parameters; 2. SQL splicing error, please note that each [%] must be included with [''], and spliced with the parameters with [||]; 3 , wrong annotation.
2020-08-22 comment 05417
Course Introduction:The solution to the SQL query prompt that the object name is invalid is: when performing the SQL query, just specify the database name and add the owner name. The specific method is: [SELECT * FROM database name owner name data table name].
2020-06-24 comment 07410
Course Introduction:The solution to the sql file that is too large to be imported into phpmyadmin is: 1. First open the [php.ini] configuration file; 2. Modify the values of [upload_max_filesize] and [memory_limit]; 3. Modify the phpmyadmin configuration file; 4. Restart the server.
2019-12-28 comment 01612
Course Introduction:The solution to the problem that sql server cannot connect to the server: first press and hold [win+r] to open the run; then enter [net start mssqlserver] during the run and confirm; finally, the startup is successful.
2020-06-17 comment 05565
Course Introduction:SQL, Structured Query Language, is a standard database language used to create, maintain and retrieve relational databases, while PL/SQL, the procedural language extension of SQL, extends SQL and provides procedural ability. Following are the important differences between SQL and PL/SQL. Serial number keyword SQLPL/SQL1 Definition SQL is a structured query language for databases. PL/SQL is a programming language using SQL. 2 Variables SQL has no variables. PL/SQL has variables, data types, etc. 3. Control structure SQL does not have FOR loops, if controls and similar structures. PL/SQL has FOR loops, while loops, if controls, and other similar structures. 4Operation SQ
2023-08-24 comment 01110