CreateQuery tp (children 3)
 Identifier tp
 Columns definition (children 2)
  ExpressionList (children 2)
   ColumnDeclaration x (children 1)
    DataType Int32
   ColumnDeclaration y (children 1)
    DataType Int32
  ExpressionList (children 1)
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 2)
      Identifier x
      Identifier y
     Identifier x
 Storage definition (children 3)
  Function MergeTree
  Identifier y
  Set