下面一段代码迷糊,请行家指教
SELE 3USE BM3
ZAP
SELE 1
USE BM1
SELE 2
USE BM2
INDE ON ZKZH TO LS
SELE 1
SET RELA TO ZKZH INTO B
SCAN
IF A.ZKZH=B.ZKZH.AND.A.XM<>B.XM
SELE 3
APPE BLANK
REPL ZKZH WITH B.ZKZH,XM WITH B.XM
ENDIF
ENDSCAN
SELECT 3
BROWSE
请教:1.二表已关联二表指针跟着走,为何还要用scan循环?
2.在SELECT 3 替换后,为何在ENDSCAN 前不用SELE 1,
不用返回1区吗?