回答：换成单选按钮控件不就行了
回答：select * from formtable_main_20 a ,workflow_requestbase b where a.requestid=b.requestid and b.currentnodetype=3 and ${if(len(nd)==0,"a.ysnd=year(getdate())","a.ysnd='"+nd+"'")} and ${if(len(yd)==0,"a.yfzs=month(getdate())","a.yfzs='"+yd+"'")}
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