CreateQuery mutation_table (children 3)
 Identifier mutation_table
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType int
   ColumnDeclaration price (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType Int32
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Identifier id
  Identifier id