orecle,sql语句增删改查大全
时间: 2023-09-06 20:04:11 浏览: 217
SQL Server连接Oracle详细步骤和增删改查语句
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Oracle是一种关系型数据库管理系统,支持使用SQL语言进行数据的增删改查操作。
1. 数据的插入(Insert):
INSERT INTO table_name (column1, column2, ...) VALUES (value1, value2, ...);
2. 数据的查询(Select):
SELECT column1, column2, ... FROM table_name WHERE condition;
3. 数据的更新(Update):
UPDATE table_name SET column1 = value1, column2 = value2, ... WHERE condition;
4. 数据的删除(Delete):
DELETE FROM table_name WHERE condition;
5. 创建表(Create Table):
CREATE TABLE table_name (column1 datatype, column2 datatype, ...);
6. 删除表(Drop Table):
DROP TABLE table_name;
7. 修改表(Alter Table):
ALTER TABLE table_name ADD column_name datatype;
ALTER TABLE table_name DROP COLUMN column_name;
ALTER TABLE table_name MODIFY column_name datatype;
8. 创建索引(Create Index):
CREATE INDEX index_name ON table_name (column1, column2, ...);
9. 删除索引(Drop Index):
DROP INDEX index_name;
10. 创建视图(Create View):
CREATE VIEW view_name AS SELECT column1, column2, ... FROM table_name WHERE condition;
11. 删除视图(Drop View):
DROP VIEW view_name;
12. 数据的排序(Order By):
SELECT column1, column2, ... FROM table_name ORDER BY column_name ASC|DESC;
13. 数据的分组(Group By):
SELECT column1, column2, ... FROM table_name GROUP BY column_name;
14. 数据的联接(Join):
SELECT column1, column2, ... FROM table1 INNER JOIN table2 ON table1.column_name = table2.column_name;
这些是Oracle中常用的SQL语句,通过这些语句可以完成数据的增删改查及其他相关操作。但需要注意的是,具体的语法和用法可能因为不同的版本和具体的需求而略有区别。
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