executor/converter: sort statements in Convert function.
executor/converter: sort statements in Convert function.

JinheLin/tidb,kyle-wang/tidb,c4pt0r/tidb,silentred/tidb,silentred/tidb,anywhy/tidb,liyu4/tidb,coocood/tidb,ngaut/tidb,XuHuaiyu/tidb,tiancaiamao/tidb,qhsong/tidb,pingcap/tidb,EvilMcJerkface/tidb,kyle-wang/tidb,8cbx/tidb,myrice/tidb,Nify/tidb,silenceper/tidb,ngaut/tidb,EvilMcJerkface/tidb,c4pt0r/tidb,astaxie/tidb,gaocegege/tidb,mccxj/tidb,wusphinx/tidb,pingcap/tidb,louishust/tidb,cosmtrek/tidb,c4pt0r/tidb,ueizhou/tidb,kyle-wang/tidb,mccxj/tidb,simon-xia/tidb,c4pt0r/tidb,yuanwhy/tidb,pingcap/tidb,coocood/tidb,spongedu/tidb,zs634134578/tidb,pingcap/tidb,cosmtrek/tidb,ueizhou/tidb,silenceper/tidb,qhsong/tidb,zimulala/tidb,Cofyc/tidb,CodeRushing/tidb,CodeRushing/tidb,louishust/tidb,gaocegege/tidb,qiuyesuifeng/tidb,anywhy/tidb,zs634134578/tidb,andelf/tidb,liyu4/tidb,zimulala/tidb,ngaut/tidb,myrice/tidb,ming-relax/tidb,c4pt0r/tidb,JinheLin/tidb,pingcap/tidb,wusphinx/tidb,yangwenmai/tidb,kyle-wang/tidb,tiancaiamao/tidb,simon-xia/tidb,Cofyc/tidb,ngaut/tidb,ming-relax/tidb,8cbx/tidb,yuanwhy/tidb,astaxie/tidb,XuHuaiyu/tidb,yangwenmai/tidb,spongedu/tidb,pingcap/tidb,kyle-wang/tidb,andelf/tidb,kyle-wang/tidb,c4pt0r/tidb,ngaut/tidb,qiuyesuifeng/tidb,ngaut/tidb,Nify/tidb