PL/SQL 语句被忽略且值不足

Question

--Below is for testing only - to be deleted later
CREATE OR REPLACE PROCEDURE movie_rental_sp 
    (movieIdCount IN OUT NUMBER,
    movieID IN OUT NUMBER)
IS
noMovie EXCEPTION;
BEGIN
SELECT MOVIE_ID, count(movie_id)
    INTO movieIdCount
    FROM MM_MOVIE
    WHERE MOVIE_ID = movieID;
IF movieIdCount = 0 THEN
RAISE noMovie;
END IF;


EXCEPTION
    WHEN noMovie THEN
    DBMS_OUTPUT.PUT_LINE('No movies found');
END;
/

警告：过程创建时出现编译错误。

SQL> 显示错误 PROCEDURE MOVIE_RENTAL_SP 的错误：

行/列错误

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7/1 PL/SQL：忽略 SQL 语句 9/2 PL/SQL：ORA-00947：没有足够的值

Answer 1

您的 SELECT 有 2 列，但您的 INTO 只有 1 个变量。

Answer 2

将选择语句更改为，

SELECT MOVIE_ID, count(movie_id)
INTO movieID , movieIdCount
.....