Could anybody tell me the result of the "142,1,BI,ALL,B'00000001' " condition ?
I didn't manage to found an explonation in the book about the use of "ALL" in a relational condition. My first idea was that it is a mistake, but Dfsort accept the statement without any comment. This is the messages received in the sysout :
ICE000I 0 - CONTROL STATEMENTS
FOR 5650-ZOS, Z/OS DFSORT V2R1 - 01:09 ON WED JUN 14, 2017 -
ICE146I 0 END OF STATEMENTS FROM
JNF1CNTL - PARAMETER LIST STATEMENTS FOLLOW
ICE193I 0 ICEAM2 INVOCATION ENVIRONMENT IN EFFECT - ICEAM2 ENVIRONMENT SELECTED
BO (or ALL) All mask bits are 1s (ON) in the input field
BM (SOME) Some but not all mask bits are 1s (ON) in the input field
BZ (NONE) None of the mask bits is 1 (ON) in the input field
BNO (NOTALL) Some or no mask bits are 1s (ON) in the input field
BNM (NOTSOME) All or no mask bits are 1s (ON) in the input field
BNZ (NOTNONE) All or some mask bits are 1s (ON) in the input field
You need to understand Bit Operations (or Bitwise Operations) first of all - no relation to SORT itself.
If not, then RTFM (including Wikipedia)