fix TestQueryExcludingSubclasses sorting

The sorting behaviour of characters )'a..z, A..Z') and
numbers (0..9) is depending on NLS. For e.g. german NLS
in Oracle 0 comes only after z, so we get esub1,esub2,e1,e2
while on some other databases we get e1,e2,esub1,esub2.
Easy fix is to have the second position also a Character to
force a distinctive order over all different databases and
settings.
1 file changed