PL/SQL 语句在过程中被忽略

Question

我在创建此程序时遇到问题，它将用于打印特定发票编号的账单模型。这就是我到目前为止所拥有的，我目前只是想让它在为账单做视觉效果之前让它运行。问题是，我不知道是什么让它不能正常运行。我还收到“未在预期位置找到 FROM 关键字”错误。

set serveroutput on;

create or replace procedure facture_client (numfacture invoices.ino%type) IS

detail_ino detail.ino%type;
detail_qty detail.qty%type;
detail_price detail.price%type;
invoices_idate invoices.idate%type;
invoices_itotal invoices.itotal%type;
invoices_salesman invoices.salesman%type;
customer_cno customer.cno%type;
customer_address customer.address%type;
customer_city customer.city%type;
customer_state customer.state%type;
customer_zip customer.zip%type;
customer_phone customer.phone%type;
salesman_nom salesman.nom%type;

begin

select detail.ino into detail_ino, detail.qty into detail_qty, detail.price into detail_price, 
invoices.idate into invoices_idate, invoices.itotal into invoices_itotal, invoices.salesman into invoices_salesman,
customer.cno into customer_cno, customer.company into customer_company, customer.address into customer_address, customer.city into customer_city, 
customer.state into customer_state, customer.zip into customer_zip, customer.phone into customer_phone,
salesman.nom into salesman_nom
from detail
join invoices on detail.ino = invoices.ino
join customer on invoices.cno = customer.cno
join salesman on invoices.salesman = salesman.salesman
where detail.ino = numfacture;

end;

Answer 1

因为您只有一个SELECT 语句有多个 INTO 关键字。

在SELECT 列表中写入所有列之后，将其缩减为一个，如下所示：

select detail.ino, detail.qty, detail.price
       invoices.idate, invoices.itotal,
       invoices.salesman, customer.cno,
       customer.company , customer.address,
       customer.city, customer.state,
       customer.zip, customer.phone, salesman.nom  
  into detail_ino, detail_qty, detail_price,
       invoices_idate, invoices_itotal,
       invoices_salesman, customer_cno,
       customer_company, customer_address,
       customer_city, customer_state,
       customer_zip, customer_phone,salesman_nom
  from detail
  join invoices
    on detail.ino = invoices.ino
  join customer
    on invoices.cno = customer.cno
  join salesman
    on invoices.salesman = salesman.salesman
 where detail.ino = numfacture;

甚至更好地与 别名表一起使用，如下所示：

select d.ino, d.qty, d.price
       i.idate, i.itotal,
       i.salesman, c.cno,
       c.company , c.address,
       c.city, c.state,
       c.zip, c.phone, s.nom  
  into detail_ino, detail_qty, detail_price,
       invoices_idate, invoices_itotal,
       invoices_salesman, customer_cno,
       customer_company, customer_address,
       customer_city, customer_state,
       customer_zip, customer_phone,salesman_nom
  from detail d
  join invoices i
    on d.ino = i.ino
  join customer c
    on i.cno = c.cno
  join salesman s
    on i.salesman = s.salesman
 where d.ino = numfacture;