HiRDB hasn't equivalents for BIN_TO_NUM function. SQLWays leaves it as is and adds message /* SQLWays: Could not convert 'BIN_TO_NUM' */.

Oracle:

n := BIN_TO_NUM(a); 

HiRDB:

SET n = BIN_TO_NUM(a);
/* SQLWays: Could not convert 'BIN_TO_NUM' */ 

References in Wiki