你即將離開本站

並前往https://dev.mysql.com/doc/refman/8.0/en/exists-and-not-exists-subqueries.html

13.2.11.6 Subqueries with EXISTS or NOT EXISTS - MySQL ...

MySQL ignores the SELECT list in such a subquery, so it makes no difference. For the preceding example, if t2 contains any rows, even rows with nothing but NULL ...

確定！ 回上一頁

查詢 「MySQL WHERE NOT IN」的人也找了：

  1. MySQL where NOT IN
    2.
  2. MySQL NOT IN (SELECT)
    3.
  3. MySQL NOT EXISTS
    4.
  4. MySQL WHERE in
    5.
  5. mysql where in效能
    6.
  6. MySQL if not exists
    7.
  7. MySQL not between
    8.
  8. PHP mysql where in
    9.