I am developing a Cognos report which is reporting a list of codes, unfortunately the underlying data is not all in the same case, so codes exist such as 'ABC12345' and 'abc12345' (the only difference being the case). These codes are actually the same, but Cognos treats them as different - for example when I summarise the data the total is 2 rather than 1. e.g.
When in reality this should only be 1, as the data is the same. How can I make Cognos treat the data without case sensitivity. I do not want to play around with database collation, as the problem only exists with this specific case. A fix for the specific report would be good.