Re: [U2] syntax for joining two files in Retrieve statement using Universe
I disagree with the "vewy, vewy ugly" Clif (or is that Elmer?). UniVerse/SQL
is "just another query language" - UniVerse has two parsers but only one query
engine.
Another solution is to build TRANS() I-type expressions into the command line
using EVAL with any required field modifiers. Note that you do have to quote
the parent table name, unlike building it in a file dictionary. For example:
LIST ORDERS CUST.NO EVAL "TRANS('CUSTOMERS', CUST.NO, 1, 'X')" COL.HDG
"Customer" FMT "32T" ORDER.TOTAL
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Re: [U2] syntax for joining two files in Retrieve statement using Universe
I am NOT suggesting this, but for accuracy you *can* use such notation and do joins if you, 1) turn your account(s) into UniVerse Schemas and 2) use UniVerse SQL instead of retrieve. Of course, then constraints are enforced (you WILL properly mark your field S or M, etc.), datatypes are enforced, and so forth. In other words, while it sounds lovely, in the Real Word of UniVerse inherited- from-who-knows-where applications, the application usually ties its shoe laces together and tries to run down-hill. It gets vewy, vewy, ugly. I've helped clients do this, so if anyone wants to consider it, contact me direct, off list. -- Regards, Clif ~~~ W. Clifton Oliver, CCP CLIFTON OLIVER & ASSOCIATES Tel: +1 619 460 5678Web: www.oliver.com ~~~ On Jul 13, 2007, at 6:48 PM, Bob Woodward wrote: If I understand what you're asking for, I'm not aware of a way to use two dictionaries in one Retrieve statement. You would, instead, create dictionary entries in your primary file that accomplish the "linking" to other files for an attribute by attribute connection. Look up xlate or trans to be used in i-descriptor dictionary entries. You're not in SQL-Kansas an more, Toto. :-) BobW -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Friday, July 13, 2007 5:35 PM To: u2-users@listserver.u2ug.org Subject: [U2] syntax for joining two files in Retrieve statement using Universe I would like to populate a Retrieve statement in Universe joining two files linking common fields in those two files. What would be the syntax to use to accomplish my need? If I want to list in that Retrieve statement, dictionary and non-dictionary items, is it just enough to Prefix the file name with a period after -example PM.PMID, POLI.VENDOR. Thanks for the help. Krish --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/ --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/ --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
RE: [U2] syntax for joining two files in Retrieve statement using Universe
If I understand what you're asking for, I'm not aware of a way to use two dictionaries in one Retrieve statement. You would, instead, create dictionary entries in your primary file that accomplish the "linking" to other files for an attribute by attribute connection. Look up xlate or trans to be used in i-descriptor dictionary entries. You're not in SQL-Kansas an more, Toto. :-) BobW -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Friday, July 13, 2007 5:35 PM To: u2-users@listserver.u2ug.org Subject: [U2] syntax for joining two files in Retrieve statement using Universe I would like to populate a Retrieve statement in Universe joining two files linking common fields in those two files. What would be the syntax to use to accomplish my need? If I want to list in that Retrieve statement, dictionary and non-dictionary items, is it just enough to Prefix the file name with a period after -example PM.PMID, POLI.VENDOR. Thanks for the help. Krish --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/ --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
Re: [U2] syntax for joining two files in Retrieve statement using Universe
My suggestion would for Krish to get a very good understanding of what normal outputs are available in Retrieve and to understand the way our post-dictionary items work. AFAIK, all queries function on a primary data file and everything is relative to that file. Therefore, the answer is NO, you can not just type PM.PMID or POLI.VENDOR and the desired results magically appear. His illustrated suggestions indicate that he comes from a different database where the filefield style is normal and virtually required. Him learning that our applications do not need all the fields defined at the dicitonary level in order to work in Data/Basic will be one of his first surprises. From there he can learn that there's really 2 sides to the database: The unregulated updates from Basic and the later usage using retrieval languages. Therefore, the data/basic program need not know of the dictionary item called VENDOR to put data in the proper attribute assumed to be the vendor. It updates the field by field number, not by field name. While this may not cover his exact question, it should lay the foundation for learning how MV works in general and to begin to identify the differences between MV and SQL-style databases. If anyone is using a 4GL or other hamburger helper that performs the functions, then it should be made aware that these are private extensions of the MV data model and not MV by itself. My 2 cents Mark Johnson - Original Message - From: <[EMAIL PROTECTED]> To: Sent: Friday, July 13, 2007 8:35 PM Subject: [U2] syntax for joining two files in Retrieve statement using Universe > I would like to populate a Retrieve statement in Universe joining two files linking common fields in those two files. What would be the syntax to use to accomplish my need? If I want to list in that Retrieve statement, dictionary and non-dictionary items, is it just enough to Prefix the file name with a period after -example PM.PMID, POLI.VENDOR. > Thanks for the help. > Krish > --- > u2-users mailing list > u2-users@listserver.u2ug.org > To unsubscribe please visit http://listserver.u2ug.org/ --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
