from()
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def from
@source.left
end
from=(value)
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def from= value
@source.left = value
end
froms()
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froms=(value)
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initialize_copy(other)
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def initialize_copy other
super
@source = @source.clone if @source
@projections = @projections.clone
@wheres = @wheres.clone
@groups = @groups.clone
@having = @having.clone if @having
end