Question

我无法找到引用字符串未正确结束的错误。我到处寻找，我的语法似乎是正确的。这个问题只出现在我引入if语句时。任何想法，将不胜感激。谢谢。如果您需要更多信息，请与我们联系。

declare

bk_id book.book_code%type;
bk_authorName author.author_first%type;
bk_authorLastName author.author_last%type;
bk_title book.title%type;
bk_pubcode book.publisher_code%type;
bk_category book.type%type;
bk_price book.price%type;
bk_paper book.paperback%type;
TempData := 10;

cursor book_cursor is select author.author_first, author.author_last,  book.title, book.type, book.price from book, author, wrote where book.book_code=wrote.book_code and author.author_num=wrote.author_num;

begin

open book_cursor;

dbms_output.put_line('First Name    Last Name       Title                        Type    Price');
dbms_output.put_line('________________________________________________________________________');
dbms_output.put_line('Date: '||Systimestamp);
loop

fetch book_cursor into  bk_authorName, bk_authorLastName, bk_title, bk_category, bk_price;

if(bk_price<TempData) then

dbms_output.put_line(bk_authorName || ' ' || bk_authorLastName || ' ' || bk_title || ' ' || bk_category || ' ' || bk_price || 'Special Deal');

else

dbms_output.put_line(bk_authorName || ' ' || bk_authorLastName || ' ' || bk_title || ' " || bk_category || ' ' || bk_price);

end if;

exit when book_cursor%notfound;

end loop;

close book_cursor;

end;

Answer 1

实际上这种语法的问题是你使用双引号而不是单引号。这是更正后的代码。试试这个，它应该有用。

    declare

    bk_id book.book_code%type;
    bk_authorName author.author_first%type;
    bk_authorLastName author.author_last%type;
    bk_title book.title%type;
    bk_pubcode book.publisher_code%type;
    bk_category book.type%type;
    bk_price book.price%type;
    bk_paper book.paperback%type;
    TempData := 10;

    cursor book_cursor is select author.author_first, author.author_last,  book.title, book.type, book.price from book, author, wrote where book.book_code=wrote.book_code and author.author_num=wrote.author_num;

    begin

    open book_cursor;

    dbms_output.put_line('First Name    Last Name       Title                        Type    Price');
    dbms_output.put_line('________________________________________________________________________');
    dbms_output.put_line('Date: '||Systimestamp);
    loop

    fetch book_cursor into  bk_authorName, bk_authorLastName, bk_title, bk_category, bk_price;

    if(bk_price<TempData) then

    dbms_output.put_line(bk_authorName || ' ' || bk_authorLastName || ' ' || bk_title || ' ' || bk_category || ' ' || bk_price || 'Special Deal');

    else

    dbms_output.put_line(bk_authorName || ' ' || bk_authorLastName || ' ' || bk_title || ' ' || bk_category || ' ' || bk_price);

    end if;

    exit when book_cursor%notfound;

    end loop;

    close book_cursor;

    end;

PLSQL引用字符串未正确终止

1 个答案: