Fix wrong return type in Decimal::CompareGtImpl
Fix wrong return type in Decimal::CompareGtImpl

apavlo/peloton,malin1993ml/peloton,yingjunwu/peloton,malin1993ml/peloton,cmu-db/peloton,apavlo/peloton,cmu-db/peloton,malin1993ml/peloton,cmu-db/peloton,malin1993ml/peloton,yingjunwu/peloton,apavlo/peloton,apavlo/peloton,cmu-db/peloton,yingjunwu/peloton,malin1993ml/peloton,yingjunwu/peloton,malin1993ml/peloton,cmu-db/peloton,apavlo/peloton,apavlo/peloton,yingjunwu/peloton,yingjunwu/peloton,cmu-db/peloton