How do you keep the order using SELECT WHERE IN()?

Question

Hi,
Is there a way to keep the order when using SELECT WHERE IN()? For example, using the following query:
SELECT id FROM data_table WHERE id IN('56','55','54','1','7');
The results will come back using the default order by id. 1,7,54,55,56
When I want to keep the order used in the IN: 56,55,54,1,7
Is there a quick way to do this in mySQL or will I be forced to order it after in code.
Thanks

Answer 1

797836 wrote:
Hi,
Is there a way to keep the order when using SELECT WHERE IN()? For example, using the following query:
SELECT id FROM data_table WHERE id IN('56','55','54','1','7');
The results will come back using the default order by id. 1,7,54,55,56In case the order by docs and comments weren't clear on this point, there is no default order and they may come back in a different order. Usually after you've tested it to exhaustion to prove otherwise, then put it in production.
>
When I want to keep the order used in the IN: 56,55,54,1,7
Is there a quick way to do this in mySQL or will I be forced to order it after in code.
ThanksUsing the in list allows oracle to have other possible data access paths than simply running the query 5 times. If for whatever reason you don't want to order the results after they come back, it may be worth your while to just run the five queries serially in the order you want, using bind variables and so having identical queries. That may seem silly on its face, but then again, we don't know the real requirements, what else is going on, if this is simplified from the real code or whether there will always be 5.