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DBI::mysql - bind_param_inout failed: Output parameters not implemented

by andreas1234567 (Vicar)
on Jan 11, 2011 at 21:14 UTC ( #881765=perlquestion: print w/replies, xml ) Need Help??
andreas1234567 has asked for the wisdom of the Perl Monks concerning the following question:

DBD::mysql does not support bind_param_inout as is documented in this 4 year old bug. I am trying to understand how hard it would be to implement (and I am not an XS Monk by any standard). Is it more difficult to implement for MySQL than e.g. DB2?
if( is_inout ) { phs->sv = value; /* Make a reference to the input variable */ SvREFCNT_inc( value ); /* Increment reference to variable */ if( SQL_PARAM_INPUT != phs->paramType ) imp_sth->bHasOutput = 1; if( SQL_PARAM_OUTPUT != phs->paramType ) imp_sth->bHasInput = 1; if( maxlen > 0 ) { maxlen++; /* Add one for potential null terminator */ /* Allocate new buffer only if current buffer isn't big enough */ if( maxlen > phs->bufferSize ) { if( 0 == phs->bufferSize ) /* new buffer */ Newc( 1, phs->buffer, maxlen, SQLCHAR, void* ); else Renewc( phs->buffer, maxlen, SQLCHAR, void* ); phs->bufferSize = maxlen; } } }
Update: I got feedback from Patrick saying he would look into the matter.
No matter how great and destructive your problems may seem now, remember, you've probably only seen the tip of them. [1]

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Re: DBI::mysql - bind_param_inout failed: Output parameters not implemented
by mje (Curate) on Jan 12, 2011 at 11:10 UTC

    I'd doubt it is that complicated but if you don't know XS you might find it a challenge. On the other hand the fact it is not implemented suggests there might be more to it than it seems. You could always get help on the dbi-users mailing list (see dbi) or you could contact Patrick (if he is still maintaining it).

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