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F-J-KFlag for Canada

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SQL Query Questions - Oracle RDBMS SQL

What does this mean?

1. SELECT title || CHR(10) || pubdate FROM books;

CHR() is new to me...

2.  Is below query correct? If no, why?

SELECT DISTINCT customer, DISTINCT order FROM orders;

I will google, but your help wouldn't harm.
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Guy Hengel [angelIII / a3]
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ASKER

Thanks. These are answers of multi choice questions
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ASKER

Good