what is the disadvantage of using global variable?
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how can you check for a records existence without causing and i/o (chain/read)?
What are the system objects required for journalling?
An rpg program is processing an openquery file.The file is declared in update mode in F spec.Can we update this file? Please explain?
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we have 2 PF files with same name, how to copy data's from one file to another through RPG program logic?
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Difference Between Call & Sbmjob?
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Q.Hi All friends, I have one Question, I have three fields in display file SUP LOT, ISSUED to Prod and Line Grp. Field SUP LOT is mentioned in one field reference file WRSLT and key field as a key field LP.Fields ISSUED to PROD,Line GRP are mentioned in the another Field reference file WMDTF. So I want to read SUP LOT on the basis of key field LP from the first file WFSLTand then i want ot read another two fields ISSUED to DATE and LINE GRP from second file on the basis of SUP LOT, which i got from first file.Now i want to display these fields in the display file DSPWMMS. but Condition is that 'Supplier Lot,ISSUED to Prod and Line Grp will not be shown if their respective fields are blanks/Zero. Please Let me Know coding part of this senerio and what would be coding for display file to now shown fields if fields are blanks/zero. My mob. no. is 9836300345. Please reply me asap.
RPG400 
