Course 19661
Course Introduction:Use PDO mode (PHP data object) to connect and select databases (unified operation of various databases), execute SQL statements and process result sets
Course 7440
Course Introduction:Many programmers who have worked for many years still have a very basic understanding of databases. They are confused as soon as they go out for interviews. They don’t understand basic SQL statements, more complex SQL queries, and SQL statement optimization. They don’t even know how to use them. Redis improves system performance and can withstand tens of millions of concurrencies. This set of courses will help you thoroughly understand MySQL locks, execution plans, indexes, MVCC & Redis transactions, cache, breakdown, penetration, avalanche, warm-up, etc., and you can complete all database interviews in one set!
Course 3390
Course Introduction:PHP and MySQL database are golden partners. Not only are they free to use, but more importantly, MySQL can be better combined with PHP. PHP also provides a dedicated programming interface for the MySQL database, improving development efficiency.
Course 27999
Course Introduction:"Database MySQL Video Tutorial" provides a basic introduction to the database, allowing everyone to first understand the MySQL database, and then explain the DOS operation database.
2023-11-14 12:58:58 0 1 292
2023-11-12 19:34:27 0 1 244
Implement filters and pagination using Laravel Eloquent
2023-11-12 18:42:35 0 1 310
How to publish SQLite database data to an online MySQL database in Flutter?
How to sync offline SQLite to MySQL online database in Flutter? Any suggestions?
2023-11-10 12:36:40 0 2 247
XAMPP/SQLSRV: Unable to find Sqlsrv in PHPINFO(); - error from connection
2023-11-09 22:34:33 0 1 172
Course Introduction:Overview of the Math library The math library is a built-in mathematical function library provided by Python. Because complex number types are often used in scientific calculations and not in general calculations, the math library does not support complex number types and only supports integer and floating point number operations. The math library provides a total of 4 mathematical constants and 44 functions. The 44 functions are divided into 4 categories, including 16 numerical representation functions, 8 power logarithmic functions, 16 trigonometric logarithmic functions and 4 advanced special functions. There are a large number of functions in the math library. During the learning process, we only need to understand the function functions one by one and remember some commonly used functions. In actual programming, if you need to use the math library, you can check the math library quick reference at any time. The functions in the math library cannot be used directly and need to be first
2023-04-24 comment 0 4521
Course Introduction:Math 库已安装,可通过以下步骤进行安装:1. 检查是否已安装;2. 使用 pip 命令安装;3. 验证安装后即可使用。
2024-06-04 comment 0 273
Course Introduction:Math is a built-in JavaScript object, not a built-in function. The Math object is used to perform mathematical calculations. It contains properties and methods. Its properties include standard mathematical constants, such as the pi constant PI; its methods constitute a mathematical function library, including geometric and arithmetic operations.
2021-07-06 comment 0 1269
Course Introduction:How to use the math module for mathematical operations in Python2.x Introduction: In Python2.x, the math module is a built-in mathematical function library that provides a large number of mathematical functions and constants. This article will introduce how to import and use the math module, and provide sample code for some common mathematical operations. 1. Import the math module. To use the math module, you first need to import it. The math module can be imported using the following statement: importma
2023-07-30 comment 0 1500
Course Introduction:The Math class is a class in the Java core API library and has high application value in mathematical calculations. Among them, the floor() method of the Math class is a very important method. It can round down a double type parameter to obtain an integer. In this article, we will explain the floor() method of the Math class in detail and provide specific code examples. The floor() method of the Math class is defined as follows: publicstaticdouble
2023-11-03 comment 0 319