13 ms·

why

• jerrysievert 11y ago
  expense - see http://stackoverflow.com/questions/2065754/is-there-any-general-rule-on-sql-query-complexity-vs-performance http://stackoverflow.com/questions/2065754/is-there-any-gene... which actually shows it fairly well. (the stackoverflow response is a much better response than i could have written, hence the link)
  • lokedhs 11y ago
    Except that he did use a join in the article itself (formatted as a subquery, but still a join)