beixuewuhen 发表于 2012-4-19 23:38 
sort stkcd
merge m:1 stkcd using d:\******
谢谢楼上,但是我用merge老是出错,
. use "C:\Documents and Settings\Administrator\桌面\paper\shiyan\1.dta", clear
. sort stkcd
. save 1, replace
file 1.dta saved
. use "C:\Documents and Settings\Administrator\桌面\paper\shiyan\2.dta", clear
. sort stkcd
. merge m:1 stkcd using C:\Documents and Settings\Administrator\桌面\paper\shiyan\2.dta
invalid 'and'
r(198);
求问错误到底在那里,应该如何改正????