SQL基础教程语句汇总

SQL基础教程语句汇总

以下是SQL基础教程中常用的SQL语句汇总：

1. 创建数据库：CREATE DATABASE database_name;

2. 使用数据库：USE database_name;

3. 创建表格：CREATE TABLE table_name

column1 datatype constraint,

column2 datatype constraint,

...

4. 查询表格：SELECT column1, column2, ... FROM table_name;

5. 插入数据：INSERT INTO table_name (column1, column2, ...) VALUES (value1, value2, ...);

6. 更新数据：UPDATE table_name SET column1 = value1, column2 = value2, ... WHERE condition;

7. 删除数据：DELETE FROM table_name WHERE condition;

8. 过滤数据：SELECT column1, column2, ... FROM table_name WHERE condition;

9. 排序数据：SELECT column1, column2, ... FROM table_name ORDER BY column1;

10. 聚合数据：SELECT aggregate_function(column) FROM

table_name;

11. 分组数据：SELECT column1, column2, ... FROM table_name GROUP BY column1;

12. 连接数据：SELECT column1, column2, ... FROM table1 INNER JOIN table2 ON condition;

13. 创建索引：CREATE INDEX index_name ON table_name (column1, column2, ...);

14. 删除索引：DROP INDEX index_name ON table_name;

15. 修改表格：ALTER TABLE table_name ADD column datatype constraint;

以上是一些常用的SQL语句，用于对数据库进行操作。请根据具体需

求进行相应的使用和修改。