CreateQuery test_table_disk_is_immutable (children 3)
 Identifier test_table_disk_is_immutable
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration key (children 1)
    DataType Int
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList
