Oracle sql語法大全

Oracle SQL是一種用於處理資料庫的程式語言,它提供了許多用於查詢、插入、更新和刪除數據的語法。以下是一些常見的Oracle SQL語法:

1. 創建資料庫表:

```sql

CREATE TABLE table_name (

column1 datatype,

column2 datatype,

column3 datatype,

...

);

```

2. 插入數據:

```sql

INSERT INTO table_name (column1, column2, column3, ...)

VALUES (value1, value2, value3, ...);

```

3. 查詢數據:

```sql

SELECT column1, column2, ...

FROM table_name

WHERE condition;

```

4. 更新數據:

```sql

UPDATE table_name

SET column1 = value1, column2 = value2, ...

WHERE condition;

```

5. 刪除數據:

```sql

DELETE FROM table_name WHERE condition;

```

6. 連線表:

```sql

SELECT column1, column2, ...

FROM table1, table2

WHERE table1.column = table2.column;

```

7. 排序數據:

```sql

SELECT column1, column2, ...

FROM table_name

ORDER BY column1 ASC/DESC;

```

8. 聚合函式:

```arduino

SELECT COUNT(column) AS count, SUM(column) AS sum, AVG(column) AS avg, MAX(column) AS max, MIN(column) AS min

FROM table_name;

```

9. 條件查詢:

```arduino

SELECT column1, column2, ...

FROM table_name

WHERE condition;

```

這只是Oracle SQL語法的一部分,還有許多其他功能和語法可用於處理資料庫。建議查閱Oracle官方文檔以獲取更詳細的信息和示例。

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