v*****r
发帖数: 1119 | 1 作为 tom 的 fan, 最喜欢他解释问题时的言简意赅，但发现 tom 偶尔也会迷惑人。他
这个帖子开始解释的很好，rowid 会变，什么情况下会变，然后给出一个例子：
“It is perfectly safe to use the rowid in ALL CASES however, assuming you
combine it with
the primary key as well:
update t
set...
where rowid = :x and primary_key = :pk;
”
看到这就忍不住笑了，rowid = :x， 既然您老人家刚解释了rowid会变，为什么又给出
这么一个 bad example. This update query is assuming the rowid value is
stored somewhere before being passed to update statement, to protect the
update transaction you will have to lock the rows wh... 阅读全帖 |
|
c**********e
发帖数: 2007 | 2 My input data set:
AAA 4 5
AAA 4 5
AAA 4 4
AAA 5 5
BBB 4 5
Need to output:
AAA 4 5
This is the only duplicate record! |
|
p*********t
发帖数: 2690 | 3 "How to find all duplicate record in SQL?" |
|
r*****l
发帖数: 2859 | 4 En. If finding duplicate is a business need, then the application side can calculate the hash.
Otherwise, I bet Oracle has some hash functions. |
|
m*********y
发帖数: 389 | 5 How to add a hash? I used the Checksum function, but I heard that HashType
is more powerful than Checksum. Anyway, let's say you want hash on the the
combination of first name, last name and address, you can do this:
Alter table person
Add hash as checksum(firstname,lastname,address)
After you created hash, searching for duplicate record is much easier, you
just need to run below query:
select hash,count(*) from person group by hash having count(*)>1 |
|
z**********8
发帖数: 2049 | 6 我们目前大约11万左右的records, 如果110万，或者更多，不知道大家是如何清理这些
duplication的。基本思路有哪些。 |
|
B*****g
发帖数: 34098 | 7 unique index，duplicate的东西根本不让进数据库 |
|
c*****d
发帖数: 6045 | 8 和BIT_AND，BIT_OR, BIT_XOR有什么关系？
下面例子中这两个row是不是认为duplicate,
table (parentId, tag, start_date, end_date, error_code)
row 1 - 1, 'A', '2014-01-01','2014-12-31','0000')
row 2 - 1, 'A', '2014-01-01','2014-01-01','0110') |
|
b******e
发帖数: 1861 | 9 是duplicate, 要update error_code成0001和0111。只set最后一个bit. errorcode是
整数，不是string. |
|
s****9
发帖数: 2226 | 10 想买能插2块硬盘的eSATA外置硬盘座(但eSATA接口只有一个)，要求电脑主板支持SATA
port duplication功能才能看到2个硬盘，否则只能看到一个。请问如何知道笔记本(
Dell Latitude E6400)和台式机主板(Asus M3N78-VM)支持该功能？ |
|
a*********p
发帖数: 717 | 11 一般SATA接口都支持吧，关键是外置硬盘座里要有sata port duplicator |
|
T*********g
发帖数: 496 | 12 public class FindDuplicate {
public static void main(String[] args) {
int[] input = {1, 2, 3, 4, 5, 6, 1, 3, 4};
BitSet bitSet = new BitSet();
for (int i : input) {
if (bitSet.get(i)) {
System.out.println("duplicate is " + i);
} else {
bitSet.set(i);
}
}
}
}
呵呵 |
|
w********r
发帖数: 331 | 13 菜鸟一个, 这两天快被netbean搞疯了。
一个好好的package（运行正常）copy 到另外一个folder, 然后Netbean报错， 说
duplicate class.
另外一个constructor的里的变量原本好好的， copy后 就说local variable accessed
by innerclass, needs to be declared final.
求有经验的同学， 前辈们建议一下。 谢谢！ |
|
b***y
发帖数: 2799 | 14 ☆─────────────────────────────────────☆
shop (shop) 于 (Sun Oct 16 20:08:56 2005) 提到:
Please help!
how to remove duplicates from linked list??
Thanks a lot
☆─────────────────────────────────────☆
alizee (Love her) 于 (Sun Oct 16 20:20:24 2005) 提到:
sort, then delete?
☆─────────────────────────────────────☆
NoDealToday (今天真的没有deal啊,真的没有) 于 (Sun Oct 16 20:37:02 2005) 提到:
再retrieve order.
☆─────────────────────────────────────☆
cdr (可读可写) 于 (Sun Oct 16 20:45:54 2005) 提到:
using a h |
|
R******d
发帖数: 1436 | 15 请问进化史上大规模的gene/genome duplication发生在哪个时期？
1，非脊椎到脊椎？
2，冷血到温血？
3，非哺乳到哺乳？
有什么review之类的文章么？
多谢了。 |
|
a********a
发帖数: 346 | 16 Data set:
A B C
6227.055 1 5
8456.652 2 5
8456.652 2 5
8805.804 3 5
8805.804 3 5
8805.804 3 5
9323.344 4 5
9323.344 4 5
9323.344 4 5
9323.344 4 5
9296.853 5 5
9296.853 5 5
9296.853 5 5
9296.853 5 5
For a data set like above, is there an easy way to remove the duplicate one,
i.e., I want to get
A B C
6227.055 1 5
8456.652 2 5
8805.804 3 5
9323.344 4 5
9296.853 5 5
Thanks |
|
z********n
发帖数: 710 | 17 数据大概是30，000朝上。但是同一个ID有重复，现在想要用快速的方法删除那些
duplicate的，但是要留一个unique ID。请问有什么好的办法呢？ |
|
o****o
发帖数: 8077 | 18 > tbl<-read.table('c:/testtble.txt', header=T)
> tbl
ID1 ID2 var1 var2 var3
1 A 1 10 44 1
2 A 1 10 44 2
3 A 2 11 3 3
4 A 2 11 3 4
5 B 3 12 4 5
6 B 3 12 4 6
7 B 4 20 10 7
> tbl[!duplicated(tbl[,-5]),]
ID1 ID2 var1 var2 var3
1 A 1 10 44 1
3 A 2 11 3 3
5 B 3 12 4 5
7 B 4 20 10 7
>
> |
|
h******e
发帖数: 6 | 19 data[!duplicated(data[,"ID2"]),] |
|
d*******1
发帖数: 854 | 20 是我局的例子不好， 应该是
data[!duplicated(data[,c("ID1","ID2")]),], 根据OLOOLO |
|
a****g
发帖数: 8131 | 21 Find the solution.
比如我有
1
2
2
3
希望找出1和3
或者找出有duplicate的数值
哪个简单用哪个
thanks |
|
x**m
发帖数: 941 | 22 Using:
first.xx=last.xx then delete;
you will get the number with duplicates. |
|
a****g
发帖数: 8131 | 23 you mean 'distinct'? it will pick one from duplicates, not separate them |
|
a****u
发帖数: 95 | 24 How about using rbind first and aggregate
x<-matrix(1:10,ncol=2,byrow=TRUE)
y<-matrix(1:20,ncol=2,byrow=TRUE)
z<-rbind(x,y)
aggregate(z,by=list(z[,1],z[,2]),FUN=tail,1)
If only duplicate for one column need to be removed, can try use match and
rbind
index<-match(x[,1],y[,1])
rbind(x[-index,],y) |
|
t*******y
发帖数: 11968 | 25 "Duplicity"
商业片, Clive Owen, Julia Roberts and Paul Giamatti
很有趣的商业间谍片, 里面有很多 twists , 总能 surprise 观众.
很高兴又能看到 Julia Roberts 的演出, 她身材恢复的挺好. |
|
w*******y
发帖数: 60932 | 26 100 Pack Verbatim (97016) Duplication Grade 16X DVD-R White Inkjet Hub
Printable DataLifePlus Blank Media Discs in 100 Tape Wrap:
http://www.meritline.com/verbatim-8x-dvd-r-media-white-inkjet-p
Coupon Code :MLC102276030230NL1 Starts On : 3/2/2011 5:00:00 AM limit 100
uses
Regular Price: $33.99 Final Price: $24.99 Free Shipping!
|
|
|
w*******y
发帖数: 60932 | 28 Here is a really good check deal
Go to Link:
http://www.checkgallery.com/home.aspx
. Click on 'personal checks'. Click on any of the check designs. Where it
says "Have an Offer Code?", enter db2712 . You'll be able to get 2 boxes of
wallet duplicates for only $5.05. Shipping is also free if you get the
slowest shipping. Hope it helps!
|
|
w*******y
发帖数: 60932 | 29 Here is a really good check deal
The Check Gallery
Go to Link:
http://www.checkgallery.com/home.aspx
. Click on 'personal checks'. Click on any of the check designs. Where it
says "Have an Offer Code?", enter db2712 . You'll be able to get 2 boxes of
wallet duplicates for only $5.05. Shipping is also free if you get the
slowest shipping. Hope it helps!
|
|
w*******y
发帖数: 60932 | 30 Here is a really good check deal
The Check Gallery
Go to Link:
http://www.checkgallery.com/home.aspx
. Click on 'personal checks'. Click on any of the check designs. Where it
says "Have an Offer Code?", enter db2712 . You'll be able to get 2 boxes of
wallet duplicates for only $5.05. Shipping is also free if you get the
slowest shipping. Hope it helps!
|
|
d*****r
发帖数: 39446 | 31 【此篇文章是由自动发信系统所张贴】
duplicate 已经退出本俱乐部, 特此通知. |
|
c*********s
发帖数: 63 | 32 终于弄好了。把下面的存成.bst文件，和Tex文件放在同一个文件夹就可以了。
%%
%% This is file `cellnew.bst',
%% generated with the docstrip utility, by HJ, 03/03/2013.
%%
%% The original source files were:
%%
%% merlin.mbs (with options: `ay,nat,nm-rvvc,nmlm,x10,x0,m10,m0,mcite,mct-1
,mct-x2,keyxyr,blkyear,dt-beg,yr-par,note-yr,atit-u,jttl-rm,thtit-a,vol-it,
vnum-x,volp-com,pp-last,num-xser,jnm-x,btit-rm,bt-rm,add-pub,pub-par,pre-pub
,edby,edbyy,blk-tit,ppx,ed,abr,ednx,xedn,jabr,url,url-blk,em-it,nfss,')
%% ----------------------... 阅读全帖 |
|
c*********s
发帖数: 63 | 33 终于弄好了。把下面的存成.bst文件，和Tex文件放在同一个文件夹就可以了。
%%
%% This is file `cellnew.bst',
%% generated with the docstrip utility, by HJ, 03/03/2013.
%%
%% The original source files were:
%%
%% merlin.mbs (with options: `ay,nat,nm-rvvc,nmlm,x10,x0,m10,m0,mcite,mct-1
,mct-x2,keyxyr,blkyear,dt-beg,yr-par,note-yr,atit-u,jttl-rm,thtit-a,vol-it,
vnum-x,volp-com,pp-last,num-xser,jnm-x,btit-rm,bt-rm,add-pub,pub-par,pre-pub
,edby,edbyy,blk-tit,ppx,ed,abr,ednx,xedn,jabr,url,url-blk,em-it,nfss,')
%% ----------------------... 阅读全帖 |
|
y**********g
发帖数: 3071 | 34
.
Procedure for requesting a Duplicate Labor Certificate. ETA-9089.
Requests for a duplicate ETA-9089 can be made by contacting the Department
of Labor or by requesting that USCIS assist with obtaining a duplicate labor
certificate ETA-9089 from DOL. The following steps are suggested when
requesting a duplicate ETA-9089 through USCIS. Please include on the top of
the I-140, Petition for Alien Immigrant Worker, a cover sheet (preferably
highlighted with colored paper) stating the following:
LOST... 阅读全帖 |
|
l****z
发帖数: 29846 | 35 The Internal Revenue Service found 6,400 more Lois Lerner emails — but they
’re not handing them over in court.
The IRS’ latest excuses are nothing short of infuriating.
Department of Justice lawyers Geoffrey J. Klimas and Stephanie Sasarak,
acting as counsel for the IRS, submitted a U.S. District Court filing June
12 in the case Judicial Watch v. Internal Revenue Service. The court filing,
provided to The Daily Caller, claims the IRS received new Lerner emails
from the Treasury Department’s ins... 阅读全帖 |
|
j*********5
发帖数: 362 | 36 其实后来我想了一下，没想象那么简单。Leetcode上实际上没有。
给两个数组，A是Sorted，B也是Sorted，要求Merge这两个，非常简单吧？立刻想到
Leetcode的merge two sorted array和merge sorted linked list之类的。
其实不然。
有要求，要求就是merge成两个数组，一个存unique value，一个存duplicated。这基
本上是对方要求的原话，没有更多信息了。
我的错误在于没理解题意，我觉得有好几种理解方法：
假设:
A是[1, 3, 4, 4, 5, 6, 6]
B是[1, 2, 4, 5, 6, 7]
我理解成输出：
Unique Array[2, 3, 7]
Duplicate Array[1, 1, 4, 4, 4, 5, 5, 6, 6, 6]
因为原话说“把unique的value都存到一个数组，duplicate的存到另一个”，此外，
number是有意义的（每个人的身高），所以我理解为Duplicate的数字是不能随便合并
的，原题也没有任何暗示说可以合并数字。
另一种理解方式（也是interv... 阅读全帖 |
|
o*q
发帖数: 630 | 37 # Title Editorial Acceptance Difficulty Frequency
1
Two Sum 28.3% Easy
292
Nim Game 54.4% Easy
344
Reverse String 57.3% Easy
136
Single Number 52.2% Easy
2
Add Two Numbers 25.6% Medium
371
Sum of Two Integers 51.6% Easy
4
Median of Two Sorted Arrays
20.4% Hard
6
ZigZag Conversion 25.6% Easy
13
Roman to Integer 42.7% Easy
237
... 阅读全帖 |
|
c**0
发帖数: 9331 | 38 eBay has recently launched what they are calling the New Product Shopping
Experience (NPSE). As pointed out in a the three part series that we
recently wrapped up that starts here, duplicate listings really spoil the
experience.
Thus, we think that the NPSE is driving eBay to implement a new policy
called the Duplicate Listing Policy (DLP for short).
Background on the duplicate listing policy
On 9/21/10 eBay announced the DLP here and that it will roll out in 35 days
(12 days from the time of ... 阅读全帖 |
|
S**I
发帖数: 15689 | 39 ☆─────────────────────────────────────☆
gzou (gzou) 于 (Thu May 12 02:26:35 2011, 美东) 提到:
马上就要G on site了，
求祝福。
下面是从本版收集到的Google的试题，便于大家查询。
申明：有的附带有解释说明的，也来自于本版或者网络，大家自己看， 不保证真确
http://www.mitbbs.com/article_t1/JobHunting/31847453_0_1.html
本人ECE fresh PhD，背景是电路/EDA，跟G业务基本没什么关系
同学内部推荐的，很简单的一次电面就给了onsite
题都不难，但是自己没把握好机会，出了一些小bug。
总的感觉，出错就是硬伤，宁可从最简单的算法写起，也不能出错。
电面：
1，Skip list， http://en.wikipedia.org/wiki/Skip_list
写code实现struct skip_list * find(struct skip_list *head, int value)
2，sorted array... 阅读全帖 |
|
S**I
发帖数: 15689 | 40 ☆─────────────────────────────────────☆
gzou (gzou) 于 (Thu May 12 02:26:35 2011, 美东) 提到:
马上就要G on site了，
求祝福。
下面是从本版收集到的Google的试题，便于大家查询。
申明：有的附带有解释说明的，也来自于本版或者网络，大家自己看， 不保证真确
http://www.mitbbs.com/article_t1/JobHunting/31847453_0_1.html
本人ECE fresh PhD，背景是电路/EDA，跟G业务基本没什么关系
同学内部推荐的，很简单的一次电面就给了onsite
题都不难，但是自己没把握好机会，出了一些小bug。
总的感觉，出错就是硬伤，宁可从最简单的算法写起，也不能出错。
电面：
1，Skip list， http://en.wikipedia.org/wiki/Skip_list
写code实现struct skip_list * find(struct skip_list *head, int value)
2，sorted array... 阅读全帖 |
|
I***i
发帖数: 14557 | 41 再来看个英文的，做个对照。
Washington: A new study has found that the American paddlefish -- known for
its bizarre, protruding snout and eggs harvested for caviar -- duplicated
its entire genome about 42 million years ago.
This finding may add a new twist to the way scientists study how fins
evolved into limbs since the paddlefish is often used as a proxy for a more
representative ancestor shared by humans and fishes.
“We found that paddlefish have had their own genome duplication. This
creates extra genetic... 阅读全帖 |
|
b***3
发帖数: 1482 | 42 Your AutoCheck Vehicle History Report
2004 Honda Accord LX
Report Run Date: 2011-12-30 17:25:09.467 EST
Report Summary
Class: Mid Range Car - Standard
Engine: 2.4L I4 MPI
Country of Assembly: Mexico
Vehicle Age: 7 year(s)
Calculated Owners: 3
VIN: 3HGCM56394G704670
Year: 2004
Make: Honda
Model: Accord LX
Style/Body: Sedan 4D
This vehicle's AutoCheck Score
The AutoCheck Score is a summary of your vehicle's history. It lets you
compare similar vehicles with ... 阅读全帖 |
|
h*********a
发帖数: 828 | 43 计划去San Juan, PR租车，但是本人没有自己的car insurance.
准备租enterprise的车。有下面三个保险选项
1. Damage Waiver
2. Personal Accident Insurance
3. Supplemental Liability Protection
如果我用chase united, 还需要买哪（几）个 ？
谢谢大家！
Damage Waiver
DAMAGE WAIVER (DW) FOR THIS BRANCH RANGES BETWEEN $15.99 AND $19.99 PER DAY.
- DW IS OFFERED AT THE TIME OF RENTAL FOR AN ADDITIONAL DAILY CHARGE. IF
THE RENTER ACCEPTS DW, ENTERPRISE WAIVES OR REDUCES THE RENTER'S
RESPONSIBILITY FOR LOSS OF, OR DAMAGE TO, THE RENTAL VEHICLE (INCLUDING BUT... 阅读全帖 |
|
l*******n
发帖数: 203 | 44 AutoCheck.com
Your AutoCheck Vehicle History Report
Report Run Date: November 5, 2015 2:11:54 PM EST
2001 Cadillac Seville SLS
many owners many owners
Calculated Owners: 4
Class: Upscale - Luxury
Engine: 4.6L V8 MPI
Country of Assembly: United States
Vehicle Age: 14 year(s)
Calculated Owners: 4
VIN: 1G6KS54YX1U133300
Year: 2001
Make: Cadillac
Model: Seville SLS
Style/Body: Sedan 4D
This vehicle's AutoCheck Score
The ... 阅读全帖 |
|
s****p
发帖数: 1087 | 45 偶然翻到关于可以接受的重复发表类似研究成果的条款
其中提到这一款：
3. The paper for secondary publication is intended for a different group of
readers; an abbreviated version could be sufficient.
顺便问个问题，我的论文A发表了。我论文B是基于论文A进一步的一个小问题研究，所
以要介绍一下论文A。那么最好的介绍当然是用图啦。
我可以直接采用在论文A上发表的图吗？
好像听说不可以？或者要得到杂志同意？
哪里去找相关条款呀？
**********************************************************
http://www.icmje.org/publishing_4overlap.html
Uniform Requirements for Manuscripts Submitted to Biomedical Journals:
Publishing and Editorial Issues Related to Publ... 阅读全帖 |
|
i**********e
发帖数: 1145 | 46 There are only 5 different kinds of expressions with different arrangement
of parenthesis for 4 numbers (using an example of 1,2,3,4), shown as below:
1) ((1 + 2) + (3 + 4))
2) (((1 + 2) + 3) + 4)
3) ((1 + (2 + 3)) + 4)
4) (1 + ((2 + 3) + 4))
5) (1 + (2 + (3 + 4)))
An easy way is to brute force using recursive method. Choose all possible
neighboring pairs and merge them using the operators (add, subtract...). For
example, choosing neighboring pairs of (1 and 2):
(1 + 2) + 3 + 4 --> 3 + 3 + 4
... 阅读全帖 |
|
w*******s
发帖数: 96 | 47 再来一个拍拍：
////////////////////////////////////////////////////////////////////////////
////////
// Problem 1.1:
// Analysis and points:
// 1. strig operation(scan)
// 2. How to determine whether it's duplicate string?
// Method 1: using one hashtable, if it's already in
hashtable,
// it's duplicate, otherwise add into hashtable.
Complexity O(n)
// Method 2: for each characer, check whether it's duplicated
// ... 阅读全帖 |
|
|
