@row_number := @row_number + 1 AS orderNum这是一句SQL语句，它是什么意思

这句SQL语句的意思是将一个变量@row_number的值加1，并将其命名为orderNum。在这个语句中，@row_number是一个变量，通过赋值操作符":="来给它赋值。在这个例子中，@row_number的初始值是1，每次执行这个语句，它的值都会自增1。然后，通过AS子句，将其命名为orderNum。这样，每次执行这个语句，都会生成一个新的序号，并以orderNum的形式返回。这个序号通常用于给查询结果排序或标记行。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [SQL Server Update字段值为ROW_NUMBER()](https://blog.csdn.net/tiemufeng1122/article/details/51202611)[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^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *2* [sql 游标、存储过程](https://download.csdn.net/download/longchanghua_enshi/7102383)[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^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *3* [Sql 四大排名函数（ROW_NUMBER、RANK、DENSE_RANK、NTILE）简介](https://blog.csdn.net/qq_27997957/article/details/82532957)[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^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 33.333333333333336%"]
[ .reference_list ]