Question

我正在尝试执行或运行以下pl / sql脚本：

SET serveroutput on;

CREATE OR REPLACE PROCEDURE findAvg
(p_category IN products.category_id% TYPE, c OUT NUMBER)
AS
BEGIN
SELECT NVL ((SELECT AVG(LIST_PRICE) FROM products
WHERE p_category = category_id), -1) into p_category
from dual;
END findAvg;
DECLARE
 cat  products.category_id%TYPE;
 Price   products.List_price%TYPE;
BEGIN
cat := &p_category;
findAvg (cat, price); 
if (price = -1) then
    dbms_output.put_line('Wrong Category ');
ELSE
    dbms_output.put_line('the average price for category' || cat || ' is ' || price);
 END IF;
END;
/
show errors

但是当我尝试运行它时，我收到此错误消息（我只能在显示错误后看到它）：

       PLS-00103: Encountered the symbol "DECLARE"

这个声明出了什么问题？

Answer 1

你错过了＆＃34; /＆＃34;在创建过程和运行它的匿名块的开始之间：

SET serveroutput on;

CREATE OR REPLACE PROCEDURE findAvg
(p_category IN products.category_id% TYPE, c OUT NUMBER)
AS
BEGIN
  SELECT NVL(AVG(LIST_PRICE),-1)
  INTO c
  FROM products
  WHERE p_category = category_id;
END findAvg;
/

show errors

DECLARE
 cat  products.category_id%TYPE;
 Price   products.List_price%TYPE;
BEGIN
cat := &p_category;
findAvg (cat, price); 
if (price = -1) then
    dbms_output.put_line('Wrong Category ');
ELSE
    dbms_output.put_line('the average price for category' || cat || ' is ' || price);
 END IF;
END;
/

此外，＆＃34;显示错误＆＃34;命令应该在创建过程之后运行，如上所述，INTO子句应该指定OUT参数。

PLS-00103：遇到符号＆＃34; DECLARE＆＃34;

1 个答案: