PLSQL Quoted String Not Properly Terminated [closed] - sql

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I am unable to find the error with a quoted string not properly ended. I've looked everywhere and my syntax seems to be correct. The issue only came about when I introduced the if statement. Any ideas would be appreciated. Thanks. Let me know if you need more information.
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

Actually the problem with this syntax is you used double quotes instead of single quotes.
This is the corrected code. Try this,it should work.
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;