CreateQuery t_constant_index (children 3)
 Identifier t_constant_index
 Columns definition (children 2)
  ExpressionList (children 1)
   ColumnDeclaration id (children 1)
    DataType UInt64
  ExpressionList (children 1)
   Index (children 2)
    Literal \'foo\'
    Function set (children 1)
     ExpressionList (children 1)
      Literal UInt64_2
 Storage definition (children 2)
  Function MergeTree
  Identifier id
