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Editorial Team
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Asked: 2026-05-28T20:07:18+00:00

I want to order one mysql table by two strtotime timestamps from two different

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I want to order one mysql table by two strtotime timestamps from two different columns. I’ve got the following mysql command:

SELECT * FROM (
(SELECT '1' AS `table`,  `vid_req_timestamp` AS `timestamp`, `title` FROM `movies` WHERE `vid_req` = '1')
UNION
(SELECT '2' AS `table`,  `ost_req_timestamp` AS `timestamp`, `title` FROM `movies` WHERE `ost_req` = '1')
)
ORDER BY `timestamp` DESC

This gives me an error:

#1248 - Every derived table must have its own alias

I want to combine vid_req_timestamp and ost_req_timestamp and make those descending. And it’s important to know where the timestamp came from (somehow).

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1 Answer

  1. Editorial Team

    In this case, the derived table that requires an alias is the one that you are SELECTing * from.

    Indentation helps make that clearer.

    SELECT * FROM 
(
    (SELECT '1' AS `table`,  `vid_req_timestamp` AS `timestamp`, `title` FROM `movies` WHERE `vid_req` = '1')
    UNION
    (SELECT '2' AS `table`,  `ost_req_timestamp` AS `timestamp`, `title` FROM `movies` WHERE `ost_req` = '1')
) AS `some_table_name_lol_this_is_an_alias`
ORDER BY `timestamp` DESC
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