Yes, it look's like the string parameter gets converted to a number. Told you it had changed. ;-)

Which means that 

SQL> select count(*) from rdf_test where '1.0' = v1;

  COUNT(*)
----------
         1

SQL>  select count(*) from rdf_test where 'a' = v1;
 select count(*) from rdf_test where 'a' = v1
                                     *
ERROR at line 1:
ORA-01722: invalid number


SQL> select count(*) from rdf_test where v1 = 'a';
select count(*) from rdf_test where v1 = 'a'
                                         *
ERROR at line 1:
ORA-01722: invalid number

[download]

Obviously the fix is to convert the number into a string (since the exception can't be generated then). Thus, 

  1* select count(*) from rdf_test where 'a' = TO_CHAR(v1)
SQL> /

  COUNT(*)
----------
         0

[download]
Great. It's working fine now. But... 

SQL> select count(*) from rdf_test where '1.0' = TO_CHAR(v1);

  COUNT(*)
----------
         0

[download]
which leaves it still being a headache.

--
Tommy
Too stupid to live.
Too stubborn to die.

In reply to Re: Re: Re: DBI: when 1 != '1' by tommyw
in thread DBI: when 1 != '1' by IlyaM

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