hive的sql语句怎么转换为mysql的形式
时间: 2024-04-30 19:23:03 浏览: 153
简单的spark 读写hive以及mysql
Hive的SQL语句和MySQL的SQL语句在语法和函数上有所不同,但大部分语句和函数是通用的。以下是一些常见的Hive SQL语句和它们在MySQL中的等效形式:
1. 创建表
Hive SQL:
```
CREATE TABLE mytable (
id INT,
name STRING,
age INT
)
ROW FORMAT DELIMITED
FIELDS TERMINATED BY ','
STORED AS TEXTFILE;
```
MySQL SQL:
```
CREATE TABLE mytable (
id INT,
name VARCHAR(255),
age INT
);
```
2. 插入数据
Hive SQL:
```
INSERT INTO mytable (id, name, age)
VALUES (1, 'John', 25),
(2, 'Jane', 30),
(3, 'Bob', 35);
```
MySQL SQL:
```
INSERT INTO mytable (id, name, age)
VALUES (1, 'John', 25),
(2, 'Jane', 30),
(3, 'Bob', 35);
```
3. 查询数据
Hive SQL:
```
SELECT id, name, age
FROM mytable
WHERE age > 30;
```
MySQL SQL:
```
SELECT id, name, age
FROM mytable
WHERE age > 30;
```
4. 更新数据
Hive SQL:
```
UPDATE mytable
SET age = 40
WHERE id = 3;
```
MySQL SQL:
```
UPDATE mytable
SET age = 40
WHERE id = 3;
```
5. 删除数据
Hive SQL:
```
DELETE FROM mytable
WHERE id = 2;
```
MySQL SQL:
```
DELETE FROM mytable
WHERE id = 2;
```
需要注意的是,Hive SQL语句和MySQL SQL语句在语法和函数上有所不同,因此在将Hive SQL语句转换为MySQL SQL语句时,需要根据具体情况进行调整和修改。
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