你即將離開本站

並前往https://dba.stackexchange.com/questions/59/when-to-use-null-and-when-to-use-an-empty-string

When to use NULL and when to use an empty string? - DBA ...

I do not know about MySQL and PostgreSQL, but let me treat this a bit ... But to select the columns where the value is empty or NULL, ...

確定！ 回上一頁

查詢 「MySQL NULL or empty」的人也找了：

  1. MySQL NULL to 0
    2.
  2. MySQL IS NULL or empty
    3.
  3. MySQL not empty
    4.
  4. MySQL check IS NULL
    5.
  5. MySQL NULL to empty string
    6.
  6. Sql select where null or empty
    7.
  7. MySQL if empty
    8.
  8. MySQL if NOT NULL
    9.