历史数据：下载导出根据是否含有高频数据分类

ui/dasadmin/src/views/backend/historyData/index.vue

@@ -910,11 +910,13 @@ const exportExcel = () => {
     let title = ''
     const highSpeedColumnArr: string[] = []
     const columnArr: string[] = []
+    let existHighSpeed = false
     tableColumn.value.forEach((item: any, index: number) => {
         if (index > 1) {
             if (item.highSpeed === 1) {
                 highSpeedTitle += item.label + '\t,'
                 highSpeedColumnArr.push(item.prop)
+                existHighSpeed = true
             } else {
                 title += item.label + '\t,'
                 columnArr.push(item.prop)
@@ -946,8 +948,10 @@ const exportExcel = () => {
         document.body.removeChild(link)
     }
     downloadData(columnArr, title)
+    if( existHighSpeed){
         downloadData(highSpeedColumnArr, highSpeedTitle, '高频')
     }
+}
 const selectToTable = () => {
     selectRowList.value.forEach((item: selectData) => {
         const row = pointDialogTableData.value.find((row) => row.id === item.id)