MySQL sort order by array value of selected table

Question

With eg

ORDER BY field(id, 9, 1, 4)

I can order by 9,1,4.

Is it also possible to order by a comma separated string of the same table I am selecting?

I tried

ORDER BY field(id, aFieldFromTheTableIAmSelecting)

where aFieldFromTheTableIAmSelecting is "9,1,4"

But that does not work.

This question is similiar to MySQL sort order by array value

Answer 1

您可以尝试find_in_set() ：

ORDER BY find_in_set(id, aFieldFromTheTableIAmSelecting)

Answer 2

You can use locate() :

ORDER BY locate(concat(',', id, ','), concat(',', aFieldFromTheTableIAmSelecting, ','))

there must be no spaces inside aFieldFromTheTableIAmSelecting .