CreateQuery agg (children 3)
 Identifier agg
 Columns definition (children 2)
  ExpressionList (children 3)
   ColumnDeclaration key (children 1)
    DataType UInt32
   ColumnDeclaration ts (children 1)
    DataType DateTime
   ColumnDeclaration value (children 1)
    DataType UInt32
  ExpressionList (children 1)
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 3)
      Identifier ts
      Identifier key
      Function sum (children 1)
       ExpressionList (children 1)
        Identifier value
     ExpressionList (children 2)
      Identifier ts
      Identifier key
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier key
    Identifier ts