sql - Oracle: max value column alphanumeric -


the problem can not latest code. need generate next.

example:

 last:  d11.0602.166   next:  d11.0603.166

i've tried:

 max  translate  convert  mid  val

what have there "smart key" - 1 attribute comprising 3 elements. smart keys dumb, because they're pain in tha neck work with.

so correct solution split attribute 3 separate attributes , make composite key instead.

in meantime use reguklar expressions fin dthe highest value of middle component...

select max(regexp_replace(dumb_key                , '([a-z][0-9]{2})\.([0-9]{4})\..([0-9]{3})'                , '\2')) your_table /

no doubt there sorts of other complexities haven't explained, means isn't compleat solution. should starter ten.


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