Answer / aditya

hello ,
see chain opcode locks the first record of pf and then
starts reading.it is useful when there are multiple
receivers present in your program and you want any specific
receiver.
it is always used with HIGH indicator.

Answer / drew

CHAIN:
positions current record to correct record based on key
sets HI indicator *ON if position fails and sets %found()
off in free-form code
reads the record fields into the automatic internal buffer
fields
locks the record, if in update mode and "no lock" has not
been added to the command ( chain(n))

Answer / sandy

chain op code firstly set the file pointer to BOF(begin of file).then look for key or rrn which is specified in factor 1.
in rpg400 EX:
 Factor1          opcode        factor2                    Key/rrn           chain       file name/record format name

Answer / nkumar

With chain High indicator is defined which will be set on if record is not found. Chain works exactly like SETLL and then READ record. If the record is found it will be read and indicator will be OFF and if record is not found then indicator will be ON.

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