execute immediate
时间: 2024-05-24 13:13:20 浏览: 15
EXECUTE IMMEDIATE is a SQL statement that allows you to dynamically execute a SQL statement or a PL/SQL block. It is used to run a SQL statement or a block of code that is not known until runtime. This statement is commonly used in stored procedures or functions where the SQL statement or the code to be executed is not known until the procedure or function is called.
For example, if you have a stored procedure that needs to execute a different SELECT statement based on a parameter passed in, you can use EXECUTE IMMEDIATE to dynamically execute the SQL statement. This can make the stored procedure more flexible and easier to maintain.
The basic syntax for EXECUTE IMMEDIATE is as follows:
EXECUTE IMMEDIATE SQL_statement;
Where SQL_statement is the SQL statement or PL/SQL block that you want to execute. The statement can include bind variables, which can be used to pass values into the SQL statement or the PL/SQL block.
Note that EXECUTE IMMEDIATE can be a security risk if you allow the user to pass arbitrary SQL statements. You should always validate user input before using it in an EXECUTE IMMEDIATE statement.
相关推荐
![](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)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)