Query/400 will not work on DDM files. SQL will work if you do a CONNECT TO first, and if you did WRKRDBDIRE and set that up first. But connecting to do joins has me concerned. I assume you mean filea is on one system and fileb is on another and you want to join them together. I don't use OPNQRYF. With any luck it won't, instead encouraging you to use SQL. Rob Berendt -- "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." Benjamin Franklin "M. Lazarus" <email@example.com> To: firstname.lastname@example.org Sent by: cc: midrange-l-admin@mi Fax to: drange.com Subject: Queries between systems 01/04/2002 01:45 PM Please respond to midrange-l Are there any limitations of creating queries between /400 systems? Implementing joins come to mind. Is a DDM file the best way to implement it? Are there any capability differences in this regard between Query/400, SQL and OPNQRYF? TIA. -mark
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