As a general rule, query text is case insensitive, meaning that you may use any combination of upper and lower case letters regardless of the case used in documents in the search collection. This also includes field names and keyword options. Mixed case may be used for technical correctness (e.g., proper names) or for readability or emphasis, but will in no way affect the query results.
One exception is in string or keyword fields, as distinct from full-text fields, where the administrator may have chosen to maintain precise case for precision or some other reason.
Another exception is that the administrator may decide to remove the term analysis filter which is responsible for making sure that terms are converted to lower case when they are indexed as well as query time.
But in general you should feel free to enter queries as feels most natural and feel free to enter the entire query in lower case if that is what feels most natural to you.
The following queries will be interpreted identically:
- president george washington "cherry tree" datemodified:1994
- President George Washington "Cherry Tree" dateModified:1994
- president GEORGE Washington "CHERRY TREE" DateModified:1994
- PRESIDENT george WAshington "CHERRY tree" DATEMODIFIED:1994