Hi all,

I am new to jOOQ and try to go through the user manual. I couldn't run the 
following code in #4.5.2 Alias 
Columns<http://www.jooq.org/doc/3.0/manual-single-page/#aliased-columns>. 
I find an email from Lukas 
Eder<https://groups.google.com/d/msg/jooq-user/qIJlk4JPZCc/7P02gapjLTQJ> and 
figure out that I should convert String to org.jooq.Field using 
org.jooq.impl.Factory.val. I suppose it is a document issue. Right? Thanks 
in advance.


Code from jOOQ User Manual (it doesn't work):

Record record = create.select(
         concat(AUTHOR.FIRST_NAME, " ", AUTHOR.LAST_NAME).as("author"),
         count().as("books"))
      .from(AUTHOR)
      .join(BOOK).on(AUTHOR.ID.equal(BOOK.AUTHOR_ID))
      .groupBy(AUTHOR.FIRST_NAME, AUTHOR.LAST_NAME).fetchAny();

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