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# program
(
(let config (DataSource 'config))
(let world (Configure! world config 'PureDataSource 'yt))
(import agg_module '"/lib/yql/aggregate.yql")
(let list (AsList
(AsStruct '('key (Uint32 '2)) '('pred (Bool '1)) '('value (Uint32 '5)))
(AsStruct '('key (Uint32 '1)) '('pred (Bool '1)) '('value (Uint32 '17)))
(AsStruct '('key (Uint32 '2)) '('pred (Bool '0)) '('value (Uint32 '2)))
(AsStruct '('key (Uint32 '1)) '('pred (Bool '1)) '('value (Uint32 '4)))
(AsStruct '('key (Uint32 '3)) '('pred (Bool '0)) '('value (Uint32 '1)))
(AsStruct '('key (Uint32 '2)) '('pred (Bool '0)) '('value (Uint32 '3)))
(AsStruct '('key (Uint32 '2)) '('pred (Bool '1)) '('value (Uint32 '9)))
))
(let sum_traits (Apply (bind agg_module 'sum_if_traits_factory) (TypeOf list) (lambda '(row) (Member row 'value)) (lambda '(row) (Member row 'pred))))
(let res_sink (DataSink 'result))
(let resKey (Aggregate list '('key) '('('sum_value sum_traits))))
(let world (Write! world res_sink (Key) resKey '('('type))))
(let world (Commit! world res_sink))
(return world)
)
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