CreateQuery x (children 3)
 Identifier x
 Columns definition (children 2)
  ExpressionList (children 3)
   ColumnDeclaration i (children 1)
    DataType UInt64
   ColumnDeclaration j (children 1)
    DataType UInt64
   ColumnDeclaration k (children 1)
    DataType UInt64
  ExpressionList (children 2)
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 2)
      Function sum (children 1)
       ExpressionList (children 1)
        Identifier j
      Function avg (children 1)
       ExpressionList (children 1)
        Identifier k
     ExpressionList (children 1)
      Identifier i
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 2)
      Identifier j
      Identifier k
     Identifier i
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList