CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType Int64
   ColumnDeclaration mtrl (children 2)
    DataType Int64
    Literal UInt64_54321
 Storage definition (children 2)
  Function MergeTree
  Identifier id
