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hey all, I've got a question. given the following code: OVRDBF FILE(FILE1) TOFILE(MYLIB/FILE1) SHARE(*YES) OVRDBF FILE(SELCOPY) TOFILE(QTEMP/SELCOPY) SHARE(*YES) OPNQRYF FILE((MYLIB/FILE1) (QTEMP/SELCOPY)) + FORMAT(MYLIB/FILE1 *ONLY) + KEYFLD((*MAPFLD/F1FLD1) (*MAPFLD/F1FLD2)) + JFLD((*MAPFLD/F1FLD1 *MAPFLD/F2FLD1 *EQ) + (*MAPFLD/F1FLD2 *MAPFLD/F2FLD2 *EQ)) + MAPFLD((F1FLD1 'FILE1/FLD1 ') + (F1FLD2 'FILE1/FLD2 ') + (F2FLD1 'SELCOPY/FLD1 ') + (F2FLD2 'SELCOPY/FLD2 ')) + OPNID(FILE1) I'm trying to select certain records from FILE1 (over 1M records) by joining it to SELCOPY (only a reletive few) - outputing to the format of FILE1, so my RPG program can read it. the override works nicely to let the RPG see the results of the query. The query runs fine but is VERY slow. Long story, but I don't have an existing access path to locate the records from file 1 using setll/reade, and I'm not allowed to build logicals over these files. I do not have SQL (other than query manager) available. Now, finally, to my real problem: I tried reversing the order of the files in the join: OPNQRYF FILE((QTEMP/SELCOPY) (MYLIB/FILE1) ) + .... thinking that because it had only a few records it might build the access path more efficiently and run faster. the query still runs, and it appears that it builds the access path more quickly than the other way around. but now I've lost the opnqryf/rpg connection. the rpg is reading the the whole of FILE1, not the subsetted records from the opnqryf, even though the override is still in place, and i've named my OPNID the same. any ideas? Thanks, Rick
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