updating a table in a Mysql database -

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lets have in table named threadloc

id  thread 4   1 3   2 2   3 1   4

for table

i want change table value of thread can pick thread , put in on bottom (id 1) , push other threads one.

so pick 2 be

id  thread 4   1 3   3 2   4 1   2 

update threadloc set id = id + 1 thread <> @currentthread , id < @currentid; update threadloc set id = 1 thread = @currentthread

edit: doesn't change higher ids


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