SELECT* FROM table1 INNER JOIN table2 ON table1.common_column = table2.common_column;
时间: 2024-06-06 21:06:06 浏览: 11
这是一个 SQL 查询语句,它使用 INNER JOIN 操作符来将两个表 table1 和 table2 中的数据连接起来,连接条件是它们共享的列 common_column 的值相等。查询语句会返回所有符合连接条件的行,包括 table1 和 table2 中的所有列。如果有多个列名相同的列,则需要使用表名或表别名来区分。
相关问题
inner join on
Inner join is a type of join operation in relational databases that returns only the rows where there is a match in both tables being joined. It combines the rows from two tables based on a common column between them. The resulting output will contain only the rows where the matching condition is true in both tables. The syntax for inner join is as follows:
SELECT column_name(s)
FROM table1
INNER JOIN table2
ON table1.column_name = table2.column_name;
In this example, table1 and table2 are the names of the tables being joined, and column_name is the name of the common column in both tables. The ON keyword specifies the condition that must be met for a row to be included in the output. Only the columns specified in the SELECT statement will be returned in the output.
sql innerjoin
SQL INNER JOIN是最常用的表连接形式。它通过比较两个或多个表中满足条件的记录来返回结果行。INNER JOIN是默认的表连接方式,当不加修饰性的关键字时,默认就是INNER JOIN连接。INNER JOIN的基本语法如下:
SELECT table1.column1, table2.column2...
FROM table1
INNER JOIN table2
ON table1.common_column1 = table2.common_column2; [1]
如果您不希望选取表的所有记录,可以在INNER JOIN后加上WHERE子句进行筛选。例如:
SELECT ID, NAME, AMOUNT, DATE
FROM CUSTOMERS
INNER JOIN ORDERS
ON CUSTOMERS.ID = ORDERS.CUSTOMER_ID
WHERE AMOUNT > 1515
ORDER BY AMOUNT; [3<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *2* *3* [SQL INNER JOIN:内连接](https://blog.csdn.net/qq_46940224/article/details/128493460)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT0_1"}}] [.reference_item style="max-width: 100%"]
[ .reference_list ]
相关推荐
![](https://img-home.csdnimg.cn/images/20210720083646.png)
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![doc](https://img-home.csdnimg.cn/images/20210720083327.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)