Comprehensive Analysis of MySQL CRUD: A Quick Guide for Beginners to Master Data Insert, Update, Delete, and Query

This article introduces MySQL CRUD operations (Create, Read, Update, Delete), which are fundamental to data management. The four core operations correspond to: Create (insertion), Read (query), Update (modification), and Delete (removal). First, the preparation work: create a `students` table (with auto-incrementing primary key `id`, `name`, `age`, and `class` fields) and insert 4 test records. **Create (Insert)** : Use the `INSERT` statement, which supports single-row or batch insertion. Ensure field and value correspondence; strings should be enclosed in single quotes, and auto-incrementing primary keys can be specified as `NULL` (e.g., `INSERT INTO students VALUES (NULL, 'Xiao Fang', 15, 'Class 4')`). **Read (Query)** : Use the `SELECT` statement. The basic syntax is `SELECT 字段 FROM 表`, supporting conditional filtering (`WHERE`), sorting (`ORDER BY`), fuzzy queries (`LIKE`), etc. For example: `SELECT * FROM students WHERE age > 18`. **Update (Update)** : Use the `UPDATE` statement with syntax `UPDATE 表 SET 字段=值 WHERE 条件`. **Without a `WHERE` clause, the entire table will be modified** (e.g., `UPDATE students SET age=18 WHERE name='Xiao Gang'`). **Delete (Delete)** :