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When you use COUNT operator to set a return code
of 12 or 4 if a specified data set is EMPTY, NOTEMPTY, HIGHER(n), LOWER(n), EQUAL(n) or NOTEQUAL(n). where n is a specified number of records. If you use the RC4 operand, SORT sets RC=4; otherwise it sets RC=12.
COUNT FROM(IN) EMPTY
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