CreateQuery users_compact (children 3)
 Identifier users_compact
 Columns definition (children 2)
  ExpressionList (children 3)
   ColumnDeclaration uid (children 1)
    DataType Int16
   ColumnDeclaration name (children 1)
    DataType String
   ColumnDeclaration age (children 1)
    DataType Int16
  ExpressionList (children 1)
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 2)
      Identifier age
      Function count (children 1)
       ExpressionList
     ExpressionList (children 1)
      Identifier age
 Storage definition (children 3)
  Function MergeTree
  Identifier uid
  Set
