sap hana sql语法
时间: 2023-08-31 18:04:54 浏览: 202
SAP HANA SQL语法是基于标准SQL的,但也有一些独有的语法和特性。以下是一些常用的语法:
1. 创建表:
```sql
CREATE TABLE table_name (
column1 datatype [ NULL | NOT NULL ],
column2 datatype [ NULL | NOT NULL ],
...
);
```
2. 插入数据:
```sql
INSERT INTO table_name (column1, column2, column3, ...)
VALUES (value1, value2, value3, ...);
```
3. 更新数据:
```sql
UPDATE table_name
SET column1 = value1, column2 = value2, ...
WHERE condition;
```
4. 删除数据:
```sql
DELETE FROM table_name
WHERE condition;
```
5. 查询数据:
```sql
SELECT column1, column2, ...
FROM table_name
WHERE condition;
```
6. 连接查询:
```sql
SELECT column1, column2, ...
FROM table1
INNER JOIN table2
ON table1.column = table2.column;
```
7. 聚合函数:
```sql
SELECT COUNT(column_name)
FROM table_name
WHERE condition;
```
8. 子查询:
```sql
SELECT column1, column2, ...
FROM table_name
WHERE column_name IN (SELECT column_name FROM table_name WHERE condition);
```
这只是 SAP HANA SQL 语法的一部分,还有很多其他的语法和特性可以用于数据操作和管理。
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