如何将字符型“年月”转换成时间型“年月日”？

shiyiming

[size=200:2romczkd][b:2romczkd]请问高手：如何将字符型“年月”（如200605）转换成时间型“年月日”20060501？
这里“年月日”的“日”都是为01。
谢谢！[/b:2romczkd][/size:2romczkd]

shiyiming

[code:2std6bh4]data _null_;
olddt='200605';
newdt=mdy(substr(olddt,5,2),01,substr(olddt,1,4));
put newdt= format date9.;
run;[/code:2std6bh4]

shiyiming

[code:ydt5v9rr]
data _null_;
             olddt='200605';
             newdt=input(olddt,yymmn6.);
             format newdt yymmdd10.;
run;
[/code:ydt5v9rr]

shiyiming

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shiyiming

十分感谢！