作者查詢 / lsshno1
作者 lsshno1 在 PTT [ Statistics ] 看板的留言(推文), 共171則
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1F推: 我太太七年前擔任國中家教時薪五百元,供您參考01/25 10:19
7F推: hash merge09/19 12:13
23F推: FDA08/27 22:19
41F推: 應該這麼說 FDA也認R 但是這產業九成用SAS08/29 22:32
42F推: https://goo.gl/6DC6nW08/29 22:36
43F→: FDA只認SAS某種程度像是獅子的鬃毛08/29 22:36
1F推: try "/^hypertension$/"07/23 00:54
2F→: ^ and $ 表示start/end of string07/23 00:54
3F→: 除此之外, 可以試著用ifc or ifn function表示07/23 00:55
4F→: 例如: HTN=ifn(prxmatch("/^hypertension$/",HTN),1,0)07/23 00:56
5F→: 不過還是建議使用variable HTN判斷, 出來就不用再用HTN07/23 00:57
6F→: 可以考慮使用HTNFL="Y" or "N" 之類的07/23 00:57
7F→: 關於Perl Reg Exp 可以參考這篇文章07/23 00:59
8F→: 265-29: An Introduction to Perl Regular Expressions07/23 00:59
9F推: 但記得要用end of string的時候, 記得要把變量strip一下07/23 01:04
10F→: 因為有時候, 變量後面其實有空白的, 所以抓end of string07/23 01:05
11F→: 會抓到的是空白, 會導致抓不到07/23 01:06
12F→: 上面都是一些平常工作會遇到的小問題, 希望對你有幫助07/23 01:07
1F推: Try sort by descending and retain, the pick the "firs03/24 00:23
2F→: t" three records03/24 00:23
3F推: Prod sort by nickname, if first.nickname ne last.nick01/24 13:28
4F→: name01/24 13:28
2F推: perl expression08/31 11:19
17F推:推09/12 12:04
1F推:用scan來拆07/21 02:42
2F推:proc sql count (distinct id)07/06 00:20