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Query and SQL only take the field section, joins and select omit clauses from the specified logical file. After the optimal access path is determined by considering all access path in all logical files and indexes. The access path the optimizer determines may or may not be the access path specified in your logical file. The select and omit clauses may cause the optimizer to look for an access path that is keyed with TCODE. Birgitta Mit freundlichen Grüßen i.A. Birgitta Hauser LUNZER + PARTNER GMBH Unternehmensberatung Carl-Zeiss-Straße 1 63755 Alzenau Tel: + 49 6023 951-255 Fax: + 49 6023 951-111 Internet. www.lp-gmbh.com www.rpg-schulung.de -----Ursprüngliche Nachricht----- Von: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] Im Auftrag von Greg Wenzloff Gesendet: Dienstag, 16. August 2005 15:15 An: midrange-l@xxxxxxxxxxxx Betreff: Logical file and query question I created a logical file over a rather large physical file to help speed up a long running program. I'd like to look at the data retrieved by the logical file so I can get ready to test the changed program. When I do RUNQRY *N FILENAME the system returns "Query running. Creating a copy of file FILENAME in LIBNAME". This grinds away for a long long time and I have to kill my session. >From Google I find that this message comes from OPNQRYF. The question is what's going on here? If there is an access path created by the CRTLF command why doesn't it just display the data? Other logical files instantly display records. The DDS for the LF does contain select and omit directives. Is that any significance? I don't think the program will run quicker if the operating system is going to build its own path to the data. Here is the DDS ...A..........T.Name++++++.Len++TDpB......Functions+++++++++++++++ A R IMHISTR PFILE(IMHIST) A* A CONO A TCODE A ITNBR A HOUSE A TRNDT A TRQTY A* A K ITNBR A K TRNDT A* A S TCODE COMP(EQ 'SA') A S TCODE COMP(EQ 'IS') A O CONO COMP(EQ 9) A O TRQTY COMP(EQ 0) A O ALL TIA, Greg
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