问题描述
问题类似于在SQL *PLUS中使用LIKE，其中一个select语句包含一个LIKE子句，如下所示:
The question is similar to using LIKE in SQL *PLUS, where a select statement contains a LIKE clause as follows:
select * from sometable where somecolumn LIKE 'something%';
如何在游标中使用相同的内容?我尝试使用以下方法:
How could one use the same within a cursor? I tried using the following:
cursor c is select * from sometable where somecolumn like 'something%';
同上
我需要获取 something 作为参数，这意味着 select 语句在存储过程中执行.
I need to get something as a parameter, meaning, the select statement is executed within a stored procedure.
编辑 2:
create procedure proc1 (search VARCHAR) is
cursor c is select student_name from students where student_name like 'search%';
--我知道使用search%"可以检索包含key search"的学生姓名，但还有其他方法可以使用这样的变量.
--I know using 'search%' retrieves student names containing 'the key search', but is there any other way to use such a variable.
do something;
end;
简而言之，我需要选择包含作为参数传递的值的学生姓名；这可能不是全名，可能足以在 like 子句中使用.
In short, I need to select student names containing a value that is passed as a parameter; this may not be the whole name, and may suffice enough to be used within a like clause.
推荐答案
根据我对您的问题的理解，您在引号内使用了变量 search.将您的变量放在引号之外，例如:
As per my understanding to your issue, you are using variable search within quotes. Put your variable outside the quotes, e.g.:
create or replace procedure PROC1(search VARCHAR2)
IS
cursor test_cur(search IN VARCHAR2)
IS
SELECT student_name
FROM student
WHERE student_name LIKE search||'%'; --you're putting you variable within quotes
v_temp_var student.student_name%TYPE;
BEGIN
OPEN test_cur(search);
LOOP
FETCH test_cur INTO v_temp_var;
EXIT WHEN test_cur%NOTFOUND;
DBMS_OUTPUT.PUT_LINE(v_temp_var);
END LOOP;
CLOSE test_cur;
END test;
这篇关于使用带有“LIKE %"的变量(例如“变量%")在 PL/SQL 中?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！