File Extension RQY File Format MS Excel OLE DB Query File RQY stands for MS Excel OLE DB Query File. This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question How to save the exported Excel files from Oracle Forms 6 Paste records in OLE Unbound Excel Object in Access Form Detail information of OLE (Object Linking & Embedding) files and format of OLE files.