这是程序:
CREATE OR REPLACE PROCEDURE GetBestSellingMovieByTimeId(timeId IN NUMBER) IS
movieName Movie.Name%type;
saleValue Sales.SaleValue%type;
BEGIN
SELECT * INTO movieName, salevalue FROM (
SELECT m.Name, SUM(s.SaleValue) AS TotalSales
FROM Sales s
INNER JOIN Movie m ON s.MovieId = m.MovieId
WHERE s.TimeId = timeId
GROUP BY m.Name ORDER BY TotalSales DESC
) WHERE ROWNUM = 1;
dbms_output.put_line(movieName ||', ' || saleValue);
END;
/
exec GetBestSellingMovieByTimeId(2);
这是错误:
Error starting at line 190 in command: exec GetBestSellingMovieByTimeId(2)
Error report:
ORA-06502: PL/SQL:numeric or value error: number precision too large
ORA-06512: at "CM420B17.GETBESTSELLINGMOVIEBYTIMEID", line 5
ORA-06512: at line 1
06502. 00000 - "PL/SQL: numeric or value error%s"
*Cause:
*Action:
TimeID 是 Sales 表上的 NUMBER(2,0) FK。将数字 2 传递给过程不应超出 NUMBER(2,0) 数据类型的范围。
为什么这个程序认为IN参数太大了?