I have an index char column in the format
aaaa-bbbbbb-cc-dd
where a,b,c and d are integers
Most of the time, the whole column will be searched for. But it will
sometimes be necessary to search for the substring in b or d (or a
combination of both) Thus if I split them up, they will need to be
indexed as well.
My question is: in terms of read and write performance, is it better to
split them up into 4 indexed columns of integer instead or to keep them
in one indexed column of char?
If they should be kept in one column, what is the quickest way to
search? To use a regular expression?
- Mathias
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