The symbol_aref extension makes Symbol#[] support Symbol, Sequel::SQL::Indentifier, and Sequel::SQL::QualifiedIdentifier instances, returning appropriate Sequel::SQL::QualifiedIdentifier instances. It’s designed as a shortcut so that instead of:
Sequel[:table][:column] # table.column
you can just write:
:table[:column] # table.column
To load the extension:
Sequel.extension :symbol_aref
If you are using Ruby 2+, and you would like to use refinements, there is a refinement version of this in the symbol_aref_refinement extension.
Related module: Sequel::SymbolAref