在PL SQL过程中使用'execute immediate'的问题

I am using the following code in a PL SQL procedure:

我在PL SQL过程中使用以下代码：

execute immediate 'select count(distinct item_type) into counter_variable
from items where ' || field_name || ' is not null'

Here,

这里，

counter_variable is declared in the declaration section of the procedure field_name is the IN parameter to the PL SQL procedure and the values passed will be column names from the 'items' table

counter_variable在过程的声明部分声明field_name是PL SQL过程的IN参数，传递的值将是'items'表中的列名

The error that I get is 'Invalid SQL Statement' and I am not able to figure out the reason. Any ideas?

我得到的错误是“无效的SQL语句”，我无法弄清楚原因。有任何想法吗？

Thanks

谢谢

1 个解决方案

#1

The into clause is PL/SQL and not valid in an SQL statement. Try this:

into子句是PL / SQL，在SQL语句中无效。尝试这个：

execute immediate 'select count(distinct item_type) 
from items where ' || field_name || ' is not null' into counter_variable