(
(let $1 (DqPhyStage '() (lambda '() (block '(
  (let $7 '@@["StructType";[["key";["DataType";"String"]];["subkey";["DataType";"String"]];["value";["DataType";"String"]]]]@@)
  (let $8 (YqlRowSpec '('NativeYtTypeFlags '0) '('StrictSchema '1) '('UniqueKeys '0) '('Type $7)))
  (let $9 (YtMeta '('CanWrite '1) '('DoesExist '1) '('YqlCompatibleScheme '1) '('InferredScheme '0) '('IsDynamic '0) '('Attrs '('('"native_strict_schema" '"false")))))
  (let $10 (YtStat '('Id '"Input") '('RecordsCount '"4") '('DataSize '"166") '('ChunkCount '1) '('ModifyTime '0) '('Revision '0)))
  (let $11 (YtTable '"Input" $8 $9 $10 '() (Void) (Void) '"/Root/plato"))
  (let $12 '('"key" '"subkey" '"value"))
  (let $13 (YtReadTable! world (DataSource '"yt" '"/Root/plato") '((YtSection '((YtPath $11 $12 (Void) (Void))) '()))))
  (return (FromFlow (NarrowMap (DqReadWideWrap $13 '()) (lambda '($14 $15 $16) (AsStruct '('"key" $14) '('"new_value" (Concat $16 (String '"foo"))) '('"subkey" $15))))))
))) '('('"_logical_id" '643) '('"_id" '"a72089ac-6ae4715b-58b2efae-450eb4ad"))))
(let $2 (DqCnUnionAll (TDqOutput $1 '0)))
(let $3 (DqPhyStage '($2) (lambda '($17) $17) '('('"_logical_id" '690) '('"_id" '"fec4584c-fef947c1-9e8209fb-1ae021c1"))))
(let $4 '('"key" '"subkey" '"new_value"))
(let $5 (DqCnResult (TDqOutput $3 '0) $4))
(let $6 (DataType 'String))
(return (KqpPhysicalQuery '((KqpPhysicalTx '($1 $3) '($5) '() '('('"type" '"generic")))) '((KqpTxResultBinding (ListType (StructType '('"key" $6) '('"new_value" $6) '('"subkey" $6))) '0 '0)) '('('"type" '"query"))))
)
