ojsde/pkp-lib — comment on commit 99495001e126e69ef8e2b2712ef1f0745e0c1fae
File:  line 0
By asmecher:

It looks like MySQL does support partial indexes from 3.23 up (see http://dev.mysql.com/doc/refman/4.1/en/create-index.html) but it's not clear to me whether it would work at all for PostgreSQL. In any case, have you looked into the compatibility layer approach in order to avoid having to further modify ADODB?