JZTXT

STATA preserve restore交替配合使用

发布时间 2023-08-31 10:26:52作者: myrj
preserve
keep in 1/1048575
save d:\te\安徽1,replace
restore
preserve
keep in 1048576/2000000
save d:\te\安徽2,replace
restore
keep in 2000000/2583957
save d:\te\安徽3,replace