anchor.diff:  likely to change the abstract syntax types considerably.
   
   Tested with GHC 7.10.2, 7.8.4 and 7.6.3.
  +
  +== Links
  +
  +* Local haddock: link:haddock/index.html[]
  +* Supported SQL:link:supported_sql.html[]
  +* Examples: link:test_cases.html[simple-sql-parser test cases]
  +* Homepage: http://jakewheat.github.io/simple-sql-parser/latest
  +* Hackage: http://hackage.haskell.org/package/simple-sql-parser
  +* Repository: https://github.com/JakeWheat/simple-sql-parser
  +* Bug tracker: https://github.com/JakeWheat/simple-sql-parser/issues
  +* Changes: https://github.com/JakeWheat/simple-sql-parser/blob/master/changelog
  +* Other versions: http://jakewheat.github.io/simple-sql-parser/
  +* Parent project: http://jakewheat.github.io/
  +* Contact: +++jakewheatmail@gmail.com+++
  +
  +== Feature support
  +
  +* query expressions
  +** select lists
  +** from clause
  +** where clause
  +** group by clause
  +** having clause
  +** order by clause
  +** offset and fetch
  +** set operators
  +** common table expressions
  +** wide range of value expressions
  +* DDL
  +** TODO
  +* non-query DML
  +** TODO
  +* Access control
  +** TODO
  +* Transaction management
  +** TODO
  +* Session management
  +** TODO
  +
  +See the link:supported_sql.html[] page for details on
  +the supported SQL.
  +
  +Here is a document with all the link:test_cases.html[simple-sql-parser
  +test cases] rendered in a webpage so you can get an idea of what it
  +supports.
   
   == Examples
   
  
positive.code: ----
  dist/build/Tests/Tests --hide-successes
  ----
  
  == Documentation
  
  * See the link:test_cases.html[simple-sql-parser test cases] for
    examples;
  * link:haddock/index.html[simple-sql-parser haddock] (the haddock on
    Hackage has source links).
  
  == Recommended reading
  
  Here is some recommended reading on understanding SQL in depth.
   +
   +
  SQL: The Complete Reference, 3rd Edition, James R. Groff, Paul
  N. Weinberg, Andrew J. Oppel
  
  This is a comprehensive book which covers up to the SQL:1999 standard.
   +
   +
   +
  SQL in a Nutshell, Kevin Kline, Brand Hunt, Daniel Kline
  
  This is another good book which covers some of the SQL:2003 and
  SQL:2008 standards. This means it covers a few newer things like
  window functions which 'SQL: The Complete Reference' doesn't. It also
  compares some main SQL product dialects.
   +
   +
   +
  SQL A Comparative Survey, Hugh Darwen +
  http://bookboon.com/en/sql-a-comparative-survey-ebook
  
  This is a book about SQL from a relational theory perspective.
   +
   +
   +
  SQL and Relational Theory, 2nd Edition, Chris Date
  
  This also covers SQL from a partly theoretical perspective.
   +
   +
   +
  A Guide to the SQL Standard, C. J. Date, Hugh Darwen
  
  This is a fantastic book for covering all the little details of the
  SQL standard in depth. It only covers up to SQL:92.
   +
   +
   +
  There are several other good books by Chris Date, some with Hugh
  Darwen and others, for instance 'Introduction to Database Systems',
  'Temporal Data & the Relational Model, Databases', 'Types and the
  Relational Model'. Only the first one (Introduction to
  Database Systems) really relates to SQL.
   +
   +
   +
  Database Systems: The Complete Book, Hector Garcia-Molina, Jeff Ullman, and Jennifer Widom.
  
  This book is very comprehensive and has some interesting sections.
   +
   +
   +
  Some of the SQL draft standards are available to download for free (follow the
  links on the wikipedia page for SQL). They are a little tricky to
  read and understand. You can find some stuff at these links.
  
  http://savage.net.au/SQL/index.html
  
  http://www.wiscorp.com/SQLStandards.html
   +
   +
   +
  IBM DB2 10.5 SQL Reference Volume 1
  
  http://public.dhe.ibm.com/ps/products/db2/info/vr105/pdf/en_US/DB2SQLRefVol1-db2s1e1050.pdf
   +
   +
   +
  Oracle SQL Reference 12c release 1
  
  http://docs.oracle.com/cd/E16655_01/server.121/e17209.pdf
   +
   +
   +
  Teradata:
  
  TODO
   +
   +
   +
  Microsoft SQL Server 2012 TSQL reference online. I didn't find a PDF
  for this.
  
  http://technet.microsoft.com/en-us/library/bb510741.aspx
   +
   +
   +
  PostgreSQL 9.4 manual:
  
  http://www.postgresql.org/docs/9.4/interactive/index.html
  
  No PDF for the Postgres manual either, but the web pages are very
  readable.
  
  == Links
  
  * Homepage: http://jakewheat.github.io/simple-sql-parser
  * Hackage: http://hackage.haskell.org/package/simple-sql-parser
  * Repository: https://github.com/JakeWheat/simple-sql-parser
  * Bug tracker: https://github.com/JakeWheat/simple-sql-parser/issues
  * Changes: https://github.com/JakeWheat/simple-sql-parser/blob/master/changelog
  
  == Contact
  
  +++jakewheatmail@gmail.com+++
  
negative.code: queries, plus a good subset of DDL, non-query DML, transaction
  management, access control and session management.
  
  This is the documentation for version 0.5.0. Documentation for other
  versions is available here:
  http://jakewheat.github.io/simple-sql-parser/.
  
  Status: covers a lot of queries already, but the public API is
  probably not very stable, since adding support for all the
  