不选择年月就不会显示数据,这个要怎么处理啊
SELECT * FROM dws_t_js010
WHERE 1=1
${if(len(para1)==0,"", " and tcqh in ('"+para1+"')")}
改你的SQL
${if(len(多选控件名)==0,""," and xxxxx in ('"+多选控件名+"')")}