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People are often trying to use ARel nodes inside ActiveRecord, and when
they do so, lots of things can break, because ActiveRecord relies on
Array#uniq and sometimes hash key equality to handle values that end up
in wheres, havings, etc. By implementing equality for all the nodes, we
should hopefully be able to prevent any nodes (even nodes containing
other nodes) from failing an equality check they should otherwise pass,
and alleviate many of these errors.
Fixes #130
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Also, removed unused ordering.rb file, since it is identical
to the one being created in unary.rb already, and isn't
required anywhere.
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* 2-0-stable:
updating history
Patched Arel v2.0.6 to support MSSQL SQL queries. Based on work of James Abley (https://github.com/jabley/arel).
consolidating dot visitor methods
refactoring where, fixing subselect
implementation for passing a subquery to #in and #not_in
tests for passing a subquery to #in and #not_in
limit members of the AST are visited
quoting limit nodes
Conflicts:
History.txt
lib/arel/nodes.rb
lib/arel/nodes/select_core.rb
lib/arel/select_manager.rb
lib/arel/visitors/to_sql.rb
test/visitors/test_to_sql.rb
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