dynamisk antal where condition i oracle sql

Prøv

select something
  from somewhere
 where someColumn in (select regexp_substr('abc-def-xyz','[^-]+', 1, level) from dual
                     connect by regexp_substr('abc-def-xyz', '[^-]+', 1, level) is not null);

At generalisere (i betragtning af at dine felter er adskilt af "-")

select something
  from somewhere
 where someColumn in (select regexp_substr(variable,'[^-]+', 1, level) from dual
                     connect by regexp_substr(variable, '[^-]+', 1, level) is not null);

Grundlæggende er output fra underforespørgslen vist nedenfor -

  SQL> select regexp_substr('abc-def-xyz','[^-]+', 1, level) value from dual
      connect by regexp_substr('abc-def-xyz', '[^-]+', 1, level) is not null;

VALUE                            
-------------------------------- 
abc                              
def                              
xyz