Sha256: 495f593b2f9ac7bc9997e909e0ce01aff68adc4391e08487f0e252a7767599ee
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Size: 626 Bytes
Versions: 66
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Contents
module Bmg
module Sql
class Processor
class Flatten < Processor
def on_with_exp(sexpr)
@subqueries = sexpr.with_spec.to_hash
apply(sexpr.select_exp)
end
attr_reader :subqueries
alias :on_select_exp :copy_and_apply
alias :on_missing :copy_and_apply
def on_table_as(sexpr)
return sexpr unless subqueries
return sexpr unless subquery = subqueries[sexpr.table_name]
[ :subquery_as, apply(subquery), sexpr.right ]
end
end # class Flatten
end # class Processor
end # module Sql
end # module Bmg
Version data entries
66 entries across 66 versions & 1 rubygems