试试改一下,分别测试
[@a表,章节号]
<[@a表,章节号] = "">
<IIF([@a表,章节号] = "", " SSSSSSSSSS", "AAAAAA")>
<IIF([@a表,章节号] = "", " SSSSSSSSSS", [@A表,大纲] & "第" & [@A,章节号] & "节及SSSSSS")>