Home/ Questions/Q 1088739
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-16T23:06:52+00:00

Is there any provision for creating arrays (variable length would be preferable) in MySQL

  • 0

Is there any provision for creating arrays (variable length would be preferable) in MySQL . I need to create 2-3 lists for each user and update/append/delete items from the lists . How do I implement them? . Creating tables for each user will lead to a total mess in my opinion, but anyway I’m new to MySQL so please help me out . Thanks

EDIT:The lists will be one dimensional and contain the ids of other users.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    It would be better if you told us what you are trying to do, not how you are trying to achieve it. Anyway, you can solve it using three tables List1, List2 and List3 with columns USER_ID, YOUR_VALUE.

    You query the list for the specified user using this query:

    SELECT YOUR_VALUE FROM List1 WHERE USER_ID=<user id>

    Updating values:

    UPDATE List1 SET YOUR_VALUE=<value> WHERE USER_ID=<user_id>

    Deleting all values for a specified user:

    DELETE FROM List1 WHERE USER_ID=<user_id>

    Delete some values (depending on a condition) for a given user:

    DELETE FROM List1 WHERE USER_ID=<user_id> AND YOUR_VALUE=<value>
    • 0