Hi,

I need to detect repetitions and updates in (relatively) small H2 tables.

As such, I currently implemented using ruby and an external ORM a md5sum 
calculation of all the keys concatenated into a string following their 
natural order, which is stored back into a specific key.

This involves a lot of communication with the H2 server, and I wish to have 
it done natively (using java itself).

I wish now to use:
1/ computed columns, so this can be done on the fly within H2, not with 
ruby/ORM.
2/ a function alias to java md5sum function (I've not found how to do that 
either yet)

Is this possible? Could someone jumpstart me on this issue? I've been 
performing some search on this group, without finding any clue.

1 important point to note: this table has no primary key, and I need to 
calculate the md5sum only once (at insertion inside this table).

Thanks in advance.
Christian

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