如何在 Java 中指定不区分大小写的搜索

Question

I currently have this code in place:

query = "select ID_OBJECT from "+Config.props.getProperty("Ob.SchemaName.Objects")+".sdm_doc_info where name like ? and typefileverscurr = 'DWG'";    

However this only returns results that match the upper case DWG. I would like my search to be case insensitive. How can I use ?i in this case? I tried the following but my Eclipse does not like it:

query = "select ID_OBJECT from "+Config.props.getProperty("Ob.SchemaName.Objects")+".sdm_doc_info where name like ? and typefileverscurr.matches('(?i:dwg)')";

Thanks for your help.

Answer 1

Usually I use to do these kind of jobs in two ways, One is by using the SQL upper() or lower() functions, like this:

"select ID_OBJECT from "+something+".sdme_doc_info where lower(typefileverscurr) = 'dwg'";

OR

"select ID_OBJECT from "+something+".sdme_doc_info where upper(typefileverscurr) = 'DWG'";

---

And another way is to use like in the query and mix above functions as well to make more insensitive

"select ID_OBJECT from "+something+".sdme_doc_info where lower(typefileverscurr) like '%dwg%'";

OR

"select ID_OBJECT from "+something+".sdme_doc_info where upper(typefileverscurr) like '%DWG%'";