MySQL SELECT 语法精粹
掌握 SELECT 语句是驾驭 MySQL 数据库的关键。
此集合涵盖了常用的 SELECT 语法,助您轻松查询数据:
- 基本查询:
SELECT column1, column2 FROM table_name;
- 条件查询:
SELECT * FROM table_name WHERE condition;
- 排序:
SELECT * FROM table_name ORDER BY column ASC/DESC;
- 限制结果数量:
SELECT * FROM table_name LIMIT number;
- 聚合函数:
SELECT COUNT(*), AVG(column) FROM table_name;
- 分组:
SELECT column, COUNT(*) FROM table_name GROUP BY column;
深入学习每个语法,解锁更多数据分析的可能性!