QSqlQuery problem

[jacek]

warning: QSqlError(-1, "", "")

This actually means that there is no error.

QSqlQuery::value: not positioned on a valid record

You don't invoke QSqlQuery::next() before value().

Also better use bindValue() to avoid SQL injection:

QSqlQuery q;
q.prepare( "SELECT * FROM `eros`.`merchandize` WHERE PicPath= :path" );
q.bindValue( ":path", strPicPath );
if( q.exec() ) {
   while( q.next() ) {
      // ...
   }
}
else {
   // error
}

QSqlQuery q;
q.prepare( "SELECT * FROM `eros`.`merchandize` WHERE PicPath= :path" );
q.bindValue( ":path", strPicPath );
if( q.exec() ) {
   while( q.next() ) {
      // ...
   }
}
else {
   // error
}

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