CreateQuery order_by_const (children 3)
 Identifier order_by_const
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration a (children 1)
    DataType UInt64
   ColumnDeclaration b (children 1)
    DataType UInt64
   ColumnDeclaration c (children 1)
    DataType UInt64
   ColumnDeclaration d (children 1)
    DataType UInt64
 Storage definition (children 3)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier a
    Identifier b
  Set