SELECT * FROM tmpdbf WHERE xh=tmpdbf.学号 AND xm=tmpdbf.姓名 INTO cursor tmpxx
OK=IIF(reccount(tmpxx)=0,"N","T")

[此贴子已经被作者于2017-8-26 10:17编辑过]

[此贴子已经被作者于2017-8-26 10:18编辑过]

OK=IIF(USED("tmpxx"),IIF(RECCOUNT("tmpxx")=0,"N","T"),"F")

这样写也可以吧

[此贴子已经被作者于2017-8-26 12:16编辑过]