s********1
发帖数: 235 | 1 如何把一个correlation matrix 按照一个table 输入一个 database 里？有大约1000,
000 X 1000, 这么多vectors ，每一对vectors 算一个 correlation, 要输到database
的表里，每一个vector 都有一个常量string 对应，所以不牵扯把vector 输到
database table 里。怎么弄比较好？主要以后可能要拿这些代表 vector 的常量
string 做key join table. |
|
c**t
发帖数: 2744 | 2 qqr
little
Linked
I knew this. But after linked table refreshed, I chose "design table" >> tit
le bar; right click; properties, it's still showing old server name! I don'
t know how to change that. drop linked table and recreate? |
|
M*****s
发帖数: 544 | 3 word 文件上面有table, table 里面有文字。现在正能看见文字，但是没法重新大幅度
编辑文字。想把隐藏的table 去掉后编辑文字。 |
|
d****r
发帖数: 2912 | 4 Select the table, right click mouse -> "Table Properties", 'Text Wrapping' -
> "Around". Then you can put another table beside the first one. |
|
c******n
发帖数: 4965 | 5 I would need to replicate all the tables used in my project to another DB,
which has less background load,
the existing project uses a combination of JDBC and hibernate, with
hibernate being the majority.
I guess I COULD scrape hibernate query logs and find the tables accessed,
but that presents problems since in the test or production, the test data
may omit some access patterns.
is there some code analysis tool to generate all the tables accessed by a
hibernate project? |
|
w*s
发帖数: 7227 | 6 Hi I have pc1(10.50.181.51),
it's running uml (192.117.1.6),
and pc2 (10.50.181.67)
pc1 and pc2 can ping each other,
pc1 and uml can ping each other.
But uml cannot reach pc2.
Any hints pls ?
---- pc1 ----
#netstat -r
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt
Iface
192.117.1.6.sta * 255.255.255.255 UH 0 0 0
tap0
10.50.180.0 * 255.255.252.0 U 0 0 0
eth0
link-local * ... 阅读全帖 |
|
b********e
发帖数: 215 | 7 发现java里有hash table,但是c++ stl好像没有hash table，如果面试的时候写C++程
序要用到hash table怎么办？谢谢。 |
|
n*******e
发帖数: 55 | 8 电面的时候被问到，自己对hash table不太熟，感觉回答的不是太好，麻烦大家给看一下
要你不用C/C++原有的hash类，自己design一个hash table的class，用伪代码写一个给
这个table赋值和取值的函数，而且已经给了你一个hash function
unsigned int hash(char *), 假设没有任何collision
结果我就卡在怎么样来存储这些index上了，为了实现O（1）的search time，很自然我
会想用数组来做，但是你有不可能浪费这么多内存生成一个2^32（4GB，unsigned int
的range)size的数组。
抱歉本人不是CS的背景，麻烦知道的高手给解释一下？谢谢了 |
|
d*******1
发帖数: 854 | 9 【 以下文字转载自 Database 讨论区 】
发信人: daydayup1 (咳咳), 信区: Database
标 题: 我的DBA在生成ORACLE table的时候需要一个一个column看
发信站: BBS 未名空间站 (Tue Sep 29 11:36:12 2009, 美东)
我给他一个100 columns的table, 请他生成一个oracle table, 他说要一个一个column
看, 决定data type, 长度什么的, 然后才能load.
真的有这么笨吗? 难道没有什么自动的方式一下子把数据读进去? |
|
z****e
发帖数: 2024 | 10 why is STL map implemented by RB-tree, rather than hash table?
can some one explain the cons and pros of RB-tree and hash table, when to
pick which to use?
RB-tree VS. hash table.
Thanks. |
|
B*******g
发帖数: 1593 | 11 class A{
public:
virtual void f(){}
};
class B: public A
{
virtual void g() {}
};
B objB;
我的理解是以上代码只生成一个v table 里面只有一个函数 A::f()
但如果class B: virtual public A
好像就生成两个v table, 第二个v table 里面是 B::g()
virtual public A中的virtual 到底起到了什么作用？而且如果我comment out B::g()
的话
sizeof(objB) for :virtual pubic A is greater than sizeof(objB) for :pubic
A, 这多余的内存用来干嘛的？
先谢了 |
|
e******d
发帖数: 310 | 12 I have a question about page table.
Assume we have two processes A, and B.
In process A we have a virtual address, say, 0x8243_AB25;
In process B we have the same virtual address 0x8243_AB25;
My question is if these two virtual addresses in process A and B point to
the same physical memory location?
More specifically, how is the page table built and how many page tables are
maintained?
Thank you a lot. |
|
e******d
发帖数: 310 | 13 Thank you for the reply.
If we need maintain a page table for each process, do the page tables for
the different processes have the same size?
If yes, I have another question. Assume the size of each page table is
4M, then each program needs at least 4M memory. Is that true? When I check
the memory usage of some processes, some just need a few hundred K or even
less memory. |
|
w***g
发帖数: 5958 | 14 就是像你说的这样，create table的时候把key设计好。如果不行的话就重新create
table再把数据导过去。Cassandra这类分布式的key-value store和传统数据库设计理
念不一样，所以用法也是不一样的。传统的key-value store的index一般就是B+-tree
或者hash table。这两者都假设random disk access，一旦cache不够用了并行读写甚
至单线程读写也就完蛋了。重新导一遍几十G的数据库都很费时费力了。而Cassandra的数
据据我的理解是按log方式存储的，也就是说新的数据来了就往文件最后面添加。这种
情况下就增加了建index的难度和性能。好处则是数据写入非常有效，而且因为有多台
机器多个硬盘同时读写，重新导一遍数据就跟玩似的。而且因为用的廉价硬盘，空间极
大，不在乎多保存几个copy的数据。新兴的互联网公司有点前途的都是指数增长的，也
就是说一个时间段新增的数据量基本和之前所有积累的数据量相当，所以隔断时间重新
导一下可以作为一个常态。
MongoDB跟Cassandra很不一样，更接近传统数据库的设计，... 阅读全帖 |
|
l******9
发帖数: 579 | 15 【 以下文字转载自 JobHunting 讨论区 】
发信人: light009 (light009), 信区: JobHunting
标 题: generate unique integer ID from columns in SQL table
发信站: BBS 未名空间站 (Fri Nov 14 17:36:46 2014, 美东)
I need to generate a new column in a table in a sql database.
the given table is:
id1 value1 value2 value3 value4
9465 387 801 1990 20
All columns are integer. All columns are integer. value1 and value2 are
always 3 digits, value3 are year value, value4 is not more than 3 digits.
I need to g... 阅读全帖 |
|
z*******w
发帖数: 79 | 16 How Stateful is Stateful Inspection?
Understanding the FW-1 State Table
Lance Spitzner
Last Modified: 11 June, 2000
The intent of this paper is to help you understand how
FW-1's stateful inspection connections table works. This
table is how FW-1 maintains who is doing what and
what connections are allowed based on the rule base. The
paper is based on continued research I have done with the
latest version of FW-1, version 4.1. To help you
better understand your own FW-1 stateful inspection t |
|
s*******z
发帖数: 422 | 17 Table 太大，必须分在两页，caption 象下面这样：
Table X.X blah blah blah
Table X.X blah blah blah (continued)
那位大侠指点一下应该怎么做啊？ |
|
J*******r
发帖数: 379 | 18 ☆─────────────────────────────────────☆
samleelyz (小蓝脸儿) 于 (Sun Sep 25 20:01:05 2005) 提到:
Table 太大，必须分在两页，caption 象下面这样：
Table X.X blah blah blah
Table X.X blah blah blah (continued)
那位大侠指点一下应该怎么做啊？
☆─────────────────────────────────────☆
advisor (advisor) 于 (Sun Sep 25 22:36:39 2005) 提到:
用longtable 或者supertabular package |
|
o******e
发帖数: 10 | 19 I have a table with the following tex code
\begin{tabular*}{1\textwidth}{ccc}
1 & 2 & 3 \\
1 & 2 & 3 \\
\end{tabular*}
i.e., I want to format the table so that the width of the table is equal to
1 textwidth.
Now I use windows lyx. How can I format this in lyx?
Thanks |
|
S********y
发帖数: 182 | 20 多谢，不过table中所有的线都变成粗线了。我只是想让最上面和最下面的边框用粗线
，别的地方还是细线，怎么弄？
\begin{table} [b]
\centering\caption{Bla,bla}\label{tab:ps.rg}
\begin{center}
\begin{tabular}{ccccc}
\hline \hline
Mw & 65 & 123 & 400 & 650 \\
\hline
Rg(nm) & 6.8 & 9.4 & 17.0 & 21.7 \\
\hline\hline
\end{tabular}
\end{center}
\end{table} |
|
g*********h
发帖数: 21 | 21 it seems not to work by following command:
\begin{table}
\centering
\caption{PSNR(dB) performance comparison between STALL-based
impulse noise removal algorithm(w/o-without resampling and fusion,
w-with resampling and fusion}\label{table:psnr:dns}
\begin{figure}
\includegraphics[width=3in]{./Chapter-3/Figures/dns_psnr}\\
\end{figure}
\end{table} |
|
T*******n
发帖数: 493 | 22 \begin{table}
\begin{tabular}{|c|}
\includegraphics{...}
\end{tabular}
\end{table}
If you don't want the "tabular" to float, don't put "table" around it. |
|
w****h
发帖数: 212 | 23 请问撰写表格table时，如果栏数太多一行无法全部显示，该如何解决？
有种办法是把若干栏分多行显示，但问题是如何设置换行呢？
比如想把“Traffic Type”栏所有行都显示为两行，如何做？
\begin{table*}[h]
\caption{Traffic Parameters}\label{table:tabtrades}
\begin{center}
\begin{tabular}{l|l|l|l|l|l|l|l}
\hline
$Traffic Type$&$Burst Size$&$Peak Rate$&$Lower \, Rate$&$Number of flows$&$
Initial Time$&$Finishing Time$&$e2e Delay Bound$\\
\hline
0 (Audio) &10kbits &96kbps &32kbps &200 &0s &45s &40ms\\
1 (Stored Video) &800kbits&5000kbps&1000kbps&15 &0s &100s&60ms\\
2 |
|
T******s
发帖数: 24 | 24 I am trying to give a self-explained table. I usually give the desciption in
the capition but I cannnot insert an equation in the caption. Can anyone
help me to get around with this problem? Thank you so much ....
\begin{table}
\caption{
{\bf My title Risk} \\
my description comes here with a equation
\begin{equation}
Y= a + b X + e_t
\end{equation}
}
\input{h:/MATLAB/dynamic/d}
\end{table} |
|
a****9
发帖数: 418 | 25 如果你table可以不要caption的话
可以这样
\begin{figure}
\begin{tabular}
here goes your table
\end{tabular}\\
\includegraphics{fig.eps}
\caption{the table and the figure}
\end{figure}
这样就是一个figure环境里放了一个tabular和一个图片, 他们share一个caption
如果两个都需要caption
我觉得最好用minipage环境, 然后把两个都放到minipage里面 |
|
S**I
发帖数: 15689 | 26 \begin{table}
\includegraphics{table.pdf}
\end{table}
列表 |
|
o*******e
发帖数: 186 | 27 Is there a way to paste word table to latex table easily, as equation does?
Thanks a lot. |
|
l******9
发帖数: 579 | 28 【 以下文字转载自 Database 讨论区 】
发信人: light009 (light009), 信区: Database
标 题: SQL combine two tables into one table and add a new column
发信站: BBS 未名空间站 (Thu May 8 14:54:50 2014, 美东)
I need to add a column with an int value to the result from a subquery on
SQL.
It is Netezza SQL.
SELECT *
FROM
(
SELECT *
FROM table1
JOIN
table2
ON table1.id1 = table2.id1
GROUP BY table1.id2, table2.id3
) AS tt_a # here, I need to add a new column to tt, c... 阅读全帖 |
|
z*******2
发帖数: 2643 | 29 【 以下文字转载自 Medicalpractice 讨论区 】
发信人: zhongguo2 (ee), 信区: Medicalpractice
标 题: Obama puts Medicare, Social Security cuts on the table
发信站: BBS 未名空间站 (Thu Jul 7 21:57:09 2011, 美东)
The Obama administration, in seeking $4 trillion in spending cuts in a debt
limit deal, has put major changes to Social Security and Medicare on the
table if Republicans agree to increased tax revenues.
The offer caters to both sides in the debt limit negotiations and according
to the Washington Post, President Obama w... 阅读全帖 |
|
l******9
发帖数: 579 | 30 【 以下文字转载自 JobHunting 讨论区 】
发信人: light009 (light009), 信区: JobHunting
标 题: compare two large tables SQL
发信站: BBS 未名空间站 (Thu May 8 19:33:54 2014, 美东)
I am comparing two tables to make sure they are same row by row and column
by column on SQL server.
SELECT *
FROM t1, t2
WHERE t1.column1 = t2.column1 AND t1.column2 = t2.column2
AND t1.column3 = t2.column3 AND t1.column4 != t2.column4
The tables are vey large, more than 100 million.
I got error:
ERROR [HY000] ERROR:... 阅读全帖 |
|
l******9
发帖数: 579 | 31 【 以下文字转载自 Database 讨论区 】
发信人: light009 (light009), 信区: Database
标 题: SQL find distinct values in large table
发信站: BBS 未名空间站 (Wed May 21 17:20:16 2014, 美东)
I have a very large table with 1 billion rows and 12 columns, which are int,
double, varchar. I need to know the distinct values for each volume.
the table has columns :
id id_1 id_2 id_3 id_4 id_5 id_6 id_7 id_8 id_9 id_10 id_11
SELECT COUNT(distinct a.id) as num_dist_id
FROM my_large_table as a
SELECT distinct a.id
FR... 阅读全帖 |
|
l******9
发帖数: 579 | 32 I need to multiply all float values of a column in table if the column value
is positive. If I find a value is null or negative or not numeric, I raise
an error in SQL server 2008 R2.
given table t0:
col
1.5
2
given table t1:
col
2
-1
5
0
null
NaN
For t0 I should get 3, for t1, I should raise an error.
Any help would be appreciated. |
|
s********w
发帖数: 2 | 33 在SAS中，Twoway Frequency Table anaylsis，可以考虑两个事件的相关性。比如可以
考虑心脏
病跟高胆固醇的相关性。
现在我遇到的问题是，有10个这样的事件，比如说有10种病，记作b1,b2...b10，然后
有200个人
的统计数据，有这个病的记作1，没有的记作0，这样形成一个10×200的表格，每格都
是0或1.我
希望考虑任何两种病之间的相关性。
用twoway frequency table 的方法，可以做一个2×2的表格，比如“有心脏病”，“
没有心脏
病”为行，“有高血压”，“没有高血压”为列。这样是可行的。但是如果10种病两两
都做一个
这样的表，一共就要做45次。
twoway frequency table的优点，是如果属性不只是“是”或“否”的话，也可以考虑
进去。但
现在我的问题就是是否问题。
请问有没有更好的model来考虑这个问题呢？谢谢。 |
|
d******9
发帖数: 404 | 34 A lot of methods, data step or SQL:
Count the records for each customer:
Proc SQL;
Create table Z as
Select customer, count(*) as Count
From T1
Group by customer;
Quit;
Or
Proc Freq;
Tables Customer;
Run;
To count " how many customer has 1 site, how many have two site"
Proc SQL;
Create table Z2 as
Select customer, site, count(*) as Count
From T1
Group by customer, site;
Quit; |
|
l******9
发帖数: 579 | 35 【 以下文字转载自 Database 讨论区 】
发信人: light009 (light009), 信区: Database
标 题: SQL combine two tables into one table and add a new column
发信站: BBS 未名空间站 (Thu May 8 14:54:50 2014, 美东)
I need to add a column with an int value to the result from a subquery on
SQL.
It is Netezza SQL.
SELECT *
FROM
(
SELECT *
FROM table1
JOIN
table2
ON table1.id1 = table2.id1
GROUP BY table1.id2, table2.id3
) AS tt_a # here, I need to add a new column to tt, c... 阅读全帖 |
|
l******9
发帖数: 579 | 36 【 以下文字转载自 JobHunting 讨论区 】
发信人: light009 (light009), 信区: JobHunting
标 题: compare two large tables SQL
发信站: BBS 未名空间站 (Thu May 8 19:33:54 2014, 美东)
I am comparing two tables to make sure they are same row by row and column
by column on SQL server.
SELECT *
FROM t1, t2
WHERE t1.column1 = t2.column1 AND t1.column2 = t2.column2
AND t1.column3 = t2.column3 AND t1.column4 != t2.column4
The tables are vey large, more than 100 million.
I got error:
ERROR [HY000] ERROR:... 阅读全帖 |
|
l******9
发帖数: 579 | 37 【 以下文字转载自 Database 讨论区 】
发信人: light009 (light009), 信区: Database
标 题: SQL find distinct values in large table
发信站: BBS 未名空间站 (Wed May 21 17:20:16 2014, 美东)
I have a very large table with 1 billion rows and 12 columns, which are int,
double, varchar. I need to know the distinct values for each volume.
the table has columns :
id id_1 id_2 id_3 id_4 id_5 id_6 id_7 id_8 id_9 id_10 id_11
SELECT COUNT(distinct a.id) as num_dist_id
FROM my_large_table as a
SELECT distinct a.id
FR... 阅读全帖 |
|
a******e
发帖数: 10 | 38 【 以下文字转载自 Indiana 讨论区 】
发信人: ashofice (Fisher), 信区: Indiana
标 题: Moving sales-chairs, tables, computer chairs, etc Jun 10 and 11 only
发信站: BBS 未名空间站 (Mon Jun 9 17:59:11 2014, 美东)
Moving sales for a lot of stuffs
Jun 10 and 11 only
Chairs
computer chairs (keep in good shape)
living room table
party table
small vacuum cleaner
microwave
electric steam seal bucket
badminton sets
and many other stuffs!
Our place is near the Asian market on Yeager Rd cross US 52
Call me at 765-237-7165 before come |
|
w*******y
发帖数: 60932 | 39 Wal Mart has rolled back their price on a crib and changing table set. The
set includes the crib (with no moving parts), a matching changing table and
a changing table pad. Reg Price was 179.97. Roll back to 99.00 with free
shipping to store OR home address. I am not too sure on the quality but it
has great reviews. (If you are unhappy you can always take back to a wal
mart store for your money back). Comes in Cherry or Dark Walnut.
I don't post often so be gentle.
Link:
http://www.walmart.com |
|
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w*******y
发帖数: 60932 | 43 Not sure why this has not been posted before. My Staples said this went on
clearance on 12/12/10. My local store had the sign I attached but no more
tables. Tried another store 60 miles away , since I was heading that way
anyway, and they had 30 tables on the floor and also had the old price sign
on them of 29.99. Picked up 2 tables and the cashier scanned them and they
came up as 9.50.
The SKU is 868100
The Model # is 084.49.804
The UPC shows 042952059378
So if your store has them and the pric... 阅读全帖 |
|
|
w*******y
发帖数: 60932 | 45 SONOMA outdoors Slate Accent Table $22.68 (was $56)
uses code NEW6679 (10% off) and
you can get free shipping but you have to spend $75 with code JUNE75
SONOMA outdoors furniture brings style to your patio. With a striking slate
tabletop and sleek curved legs, this accent table is a charming addition to
your outdoor decor. In brown/black.
* Durable steel construction offers lasting beauty.
* Details:
o 21"H x 14"W x 14"D
o Steel/slate
o Wipe clean
... 阅读全帖 |
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w*******y
发帖数: 60932 | 48 Use coupon code 3519 for 35% off and free shipping
Link:
http://shop.stagestores.com/catalog/product/view/id/174576/tote
Details
Enjoy hours of head-to-head competition with a tabletop foosball game.
Manual scoring
Rubber grip handles
Includes table, 2 balls and allen wrench
Some assembly required
MDF/ABS plastic/metal
Imported
This item is sold out at Kohl's for $20 and the description they have is
this:
Totes scores big. Challenge friends to ... 阅读全帖 |
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