Course Introduction：This tutorial explains the syntax and uses of the Excel YEAR function and provides formula examples to extract year from date, convert date to month and year, calculate age from the date of birth and determine leap years. In a few recent

2025-05-08 comment 0  794

Course Introduction：You can use the YEAR() function to extract years in MySQL. 1. Use YEAR (date_column) to extract years from DATE, DATETIME or TIMESTAMP type fields; 2. It is often used to count the annual data volume, group by year, or filter specific year records; 3. Use WHEREYEAR (date_column)=year to filter data, but may affect index performance; 4. It is recommended to replace it with range query to improve efficiency, such as WHEREdate_column>='YYYY-01-01'ANDdate_column

2025-07-10 comment 0  448

Course Introduction：Getting the start of a year in PHP can be achieved through the strtotime function or the DateTime class. The way to use strtotime is: $firstDayOfYear=strtotime('2024-01-01'); or dynamically get the current year: $year=date('Y'); $firstDayOfYear=strtotime("$year-01-01"); You can also use DateTime object-oriented method: $date=newDateTime('2024-01-01'); or $date=newDateTime('first

2025-07-04 comment 0  815

Course Introduction：Year 2038 Bug: Origin, Implications, and SolutionsUnderstanding the Year 2038 ProblemThe Year 2038 problem stems from the way certain computer...

2024-12-19 comment 0  540

Course Introduction：Year 2038 Bug: Understanding and Resolving the IssueExploring the Year 2038 ProblemThe Year 2038 problem stems from the widespread use of 32-bit...

2024-12-16 comment 0  962

Course Elementary  13799

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

Course Elementary  82328

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

Course Elementary  13158

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.

Course Elementary  24608

Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.

Course Elementary  27468

Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.