CreateQuery t_projection_sparse (children 3)
 Identifier t_projection_sparse
 Columns definition (children 2)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType String
   ColumnDeclaration val (children 1)
    DataType AggregateFunction (children 1)
     ExpressionList (children 2)
      Identifier sum
      DataType UInt64
  ExpressionList (children 1)
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 2)
      Identifier id
      Function finalizeAggregation (children 1)
       ExpressionList (children 1)
        Identifier val
     Function finalizeAggregation (children 1)
      ExpressionList (children 1)
       Identifier val
 Storage definition (children 3)
  Function AggregatingMergeTree
  Identifier id
  Set
