sql/parser: slight refactor for clarity
sql/parser: slight refactor for clarity

nieyy/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,arjun4084346/cockroach,sunya123/cockroach,veteranlu/cockroach,il9ue/cockroach,sunya123/cockroach,glycerine/cockroach,arjun4084346/cockroach,marcuswestin/cockroach,arjun4084346/cockroach,bg451/cockroach,vivekmenezes/cockroach,maxlang/cockroach,arjun4084346/cockroach,sunya123/cockroach,nieyy/cockroach,petermattis/cockroach,paperstreet/cockroach,il9ue/cockroach,maxlang/cockroach,arjun4084346/cockroach,petermattis/cockroach,marcuswestin/cockroach,paperstreet/cockroach,sunya123/cockroach,nieyy/cockroach,petermattis/cockroach,marcuswestin/cockroach,marcuswestin/cockroach,petermattis/cockroach,bg451/cockroach,il9ue/cockroach,paperstreet/cockroach,cockroachdb/cockroach,vivekmenezes/cockroach,il9ue/cockroach,maxlang/cockroach,marcuswestin/cockroach,veteranlu/cockroach,paperstreet/cockroach,cuongdo/cockroach,arjun4084346/cockroach,bg451/cockroach,vivekmenezes/cockroach,paperstreet/cockroach,petermattis/cockroach,bg451/cockroach,cuongdo/cockroach,cockroachdb/cockroach,cockroachdb/cockroach,paperstreet/cockroach,sunya123/cockroach,marcuswestin/cockroach,cuongdo/cockroach,arjun4084346/cockroach,il9ue/cockroach,glycerine/cockroach,il9ue/cockroach,nieyy/cockroach,vaibhavarora/cockroach,cuongdo/cockroach,cockroachdb/cockroach,glycerine/cockroach,bg451/cockroach,vivekmenezes/cockroach,sunya123/cockroach,cockroachdb/cockroach,veteranlu/cockroach,glycerine/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,sunya123/cockroach,cuongdo/cockroach,bg451/cockroach,vaibhavarora/cockroach,cuongdo/cockroach,marcuswestin/cockroach,vivekmenezes/cockroach,marcuswestin/cockroach,vivekmenezes/cockroach,vivekmenezes/cockroach,nieyy/cockroach,glycerine/cockroach,maxlang/cockroach,il9ue/cockroach,glycerine/cockroach,vaibhavarora/cockroach,arjun4084346/cockroach,bg451/cockroach,cockroachdb/cockroach,cuongdo/cockroach,maxlang/cockroach,glycerine/cockroach,cuongdo/cockroach,cockroachdb/cockroach,petermattis/cockroach,paperstreet/cockroach,maxlang/cockroach,cockroachdb/cockroach,il9ue/cockroach,veteranlu/cockroach,sunya123/cockroach,vaibhavarora/cockroach,paperstreet/cockroach,veteranlu/cockroach,nieyy/cockroach,maxlang/cockroach,veteranlu/cockroach,vivekmenezes/cockroach,nieyy/cockroach,maxlang/cockroach,petermattis/cockroach,glycerine/cockroach,nieyy/cockroach,petermattis/cockroach