SQL 基础篇
一：普通查询语句 ：SELECT
语法：
SELECT column1, column2, ... FROM table_name;
或
SELECT * FROM table_name;
示例：
SELECT * FROM Websites; SELECT name,country FROM Websites;
二：去重查询语句 ：SELECT DISTINCT
[ SQL笔记 ] 基础语法篇
发布时间 2023-07-05 09:51:45作者: K丶Formular
语法：
SELECT column1, column2, ... FROM table_name;
或
SELECT * FROM table_name;
示例：
SELECT * FROM Websites; SELECT name,country FROM Websites;