CreateQuery without_fixed_size_columns (children 3)
 Identifier without_fixed_size_columns
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration s (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree
  Function length (children 1)
   ExpressionList (children 1)
    Identifier s
  Identifier s