captel 800

user query, therefore, a virtual table named "dual" is provided. Example: select upper ('hello') FROM dual; SQL> SELECT UPPER ('hello') FROM dual; UPPER---HELLO: in general use, do users care about whether the data is stored in uppercase or lowercase when entering data? SELECT * FROM emp WHERE ename = ' str'; SQL> SELECT * FROM emp WHERE ename = ' str'; input str value: smith original value 1: SELECT * FROM emp WHERE ename = ' str' New value 1: SELECT * FROM emp WHERE ename = 'Smith 'unselected

query the employee name and salary, and print the three attributes of the/* cursor: % isopen enabled: true enabled, false disabled; % rowcount rows % notfound value: no value true, value false; */set serveroutput ondeclare -- cursor cemp is select ename, sal from emp; pename Emp. ename % type; -- set the type of the variable used for receiving to the same psal emp as the query type. sal % type; begin open cemp; -- open the cursor and execute the query loop -- fetch cemp into pename, psal; -- ex

Canvas star and graphic conversion, canvas star Conversion Graph conversion.1. Draw a starry sky First draw a canvas. width wide canvas. height black star, then draw 200 random positions, random size, random rotation angle of the stars.Window. onload = function () {var canvas = document. getElementById ("canvas"); canvas. width = 800; canvas. height = 800; var context = canvas. getContext ("2d"); context. f

, the width of the division rate is reduced by 23. For example, 1024 width-23 becomes 1001.Note: Firefox or opear does not display the right scroll bar when the content is less than the browser height.So if the resolution is 1024, your page is not as secure as 1000. Set to 9,002 side blank larger, visually more comfortable. Also easy to do some floating layer design.If the resolution is 800, it is generally set to 770. But there are also set to 760.Th

Chinese: First, give some records in the tr file (some records may have other data ). R 2.562406515 _ 93 _ RTR --- 1 DSR 32 [0 ffffffff 1 800] ------- [32 0] 1 [1 1] [0 1 0 0-> 0] [0 0 0 0 0-> 0] 12345: 6789[1, 10/11, 12/13]14: 16[17-1819 20] S 3.000000000 _ 0 _ RTR---0Oscar48[0000]-------[0: 255-0] S 10.00000000 _ 0 _ AGT---2TCP40[0000]-------[0: 01:0320] R 10.00000000 _ 0 _ RTR---2TCP40[0000]-------[0: 01:0320] S 12.50000000 _ 0 _ RTR---0Oscar48[000

with the same width, for example, 3 inch, if the density is 1.0, the resolution is 3 inch dip * X or 1.5 PX. If the resolution is, if the density is, resolution is 480*1.5 = px * X or dip * X. (Here X indicates the screen height ). if it is the same as 240dip, the two machines will show half the length, thus ensuring the proportion. in this case, if the resolution is 480 or 720, you can use the same layout file. However, I have seen only 320*240 (0.75), 480*320 (1.0),

Body { Overflow: Scroll ; Overflow-X: Hidden ; Overflow-X: Auto ! Important ; } However, my test results fail, and I put the body {…} in the CSS style above {...} Change to HTM {...} But it succeeded. My repeated tests concluded thatBody {…} only when no DTD is declared {...} And HTML {...} Only HTML {…} is allowed when the DTD is declared {...} Yes. As we all know, horizontal scroll bars are generally not allowed in standard webpage design, which is

noticed that for a screen with the same width, for example, 3 inch, if the density is 1.0, the resolution is 3 inch dip * X or 1.5 PX. If the resolution is, if the density is, the resolution is 480*1.5 = 720px * X or 480dip * X. (Here X represents the screen height ). if it is the same as 240dip, the two machines will show half the length, thus ensuring the proportion. in this case, if the resolution is 480 or 720, you can use the same layout file. However, I have seen only 320*240 (0.75),

Today, the Customer Service of China Merchants Bank opened the China Merchants Bank credit card that I have been storing in the drawer for a long time. I am used to ICBC's international card and get used to the form of one card and one password. I am not familiar with this CMB credit card that is highly compatible with the international market. What is the password to query, the current password and the online payment password. In addition, you do not need to enter a password when swiping the ca

There is a special form Element in the HTML element. We use it to collect form data and submit it to the server, and theoretically it is not rendered by any UI. Of course, if we keep up with a form behind the body element, it seems that there is no UI rendering problem, but when the form exists in other elements, there is a problem. What's the problem? As shown in the following example, I need to control the page scroll bar because of the page layout. I hide the scroll bar of the body, and t

. The multi-finger touch does not have this effect. The screen size is 10.6 inch, and the resolution is only 1366*768. However, because of the use of Microsoft cleartype HD technology, the display effect is still quite outstanding, with brilliant colors and realistic image quality, if you are using a 1280*800 resolution 13.1 inch MacBook Air, I believe you will not be too disappointed with the surface RT. Dual-finger merging or expansion can reduce or

881 -j DNAT --to-destination 10.10.2.200:881 Send 881 requests to Port 10.10.2.00: 881 iptables -t nat -A POSTROUTING -s 10.10.0.0/16 -d 10.10.2.200 -p tcp -m tcp --dport 881 -j SNAT --to-source 10.10.1.1; return. b. b. d. when the data source comes from the same subnet, change the source address to 10.10.1.1, issue the data source from eth0, and find a in the connection tracking table. b. c. d This data is sent from ppp0 again. Of course, do not forget to add a statement to allow acce

exam Total Day Sunday Monday Tuesday 300 20 320 Wednesday 100 70 30 200 Thursday 200 115 5 320 Friday 200 40 30 270 Saturday 43 10

build mode so that we can easily come to a default configured Imageloaderconfiguration object /** * Create a default Imageloader configuration parameter, which creates a default configuration scheme * @return */ private imageloaderconfiguration Getdefaultconfig () { imageloaderconfiguration config = Imageloaderconfiguration.createdefault( Getapplicationcontext ()); return config; } Of course, Imageloaderconfiguration has multiple options to configure. The follow

Ethod stubdouble[][] data = new double[][] {{1230, 1110, 1120, 1210, 720, 750, 860, 800, 1230, 1110, 1120,1210, 720, 750, 860, 800, 1230, 1110, 1120, 1210, 720,750, 860, 800},{720, 750, 860, 800, 1230, 1110, 1120, 1210, 720, 750, 860,800, 720, 750, 860, 800, 1230, 1110, 11

-m tcp --dport 881 -j SNAT --to-source 10.10.1.1; return. b. b. d. When the data source comes from the same subnet, change the source address to 10.10.1.1, issue the data source from eth0, and find a in the connection tracking table. b. c. d This data is sent from ppp0 again. Of course, do not forget to add a statement to allow access to port 881. iptables –A INPUT –p tcp –dport 881 –i ppp0 –j ACCEPT Can I place the server in a local area and use port forwarding? The answer is of course

file must contain at least one screen section. The system default values of this block and the available options are described as follows: Section "screen" Identifier "default screen" Device "VMware Inc [VMware svga II] PCI display adapter" Monitor "generic monitor" Defaultdepth 24 Subsection "display" Depth 1 Modes "1024 × 768" "800 × 600" "640 × 480" Endsubsection Subsection "display" Depth 4 Modes "1024 × 768" "

. Attention. We assume that your computer is connected to only one monitor. If you have more than one monitor, you will have to add a WHERE clause to ensure that you will retrieve the screen height and width of the primary display. After connecting to the Win32_DesktopMonitor class, we will use the following two lines of code to determine the size of the current screen: Copy Code code as follows: Inthorizontal = Objitem.screenwidth Intvertical = Objitem.screenheight

The first part of this paper is a plsql program, which realizes the salary increase for different positions, changes the data of the database. and commits the transaction; the second half combines the previous example with the data recovery in Oracle, that is, how to undo the already-commit operation. Also due to my limited technical level and expression capacity, for the conceptual part and summary from excerpt from: Http://www.cnblogs.com/chengxiao/p/5860823.html, If you want to learn more abo

job mgr hiredate sal comm deptno ---------- --------- ---------- -------------- ---------- 7369 smith clerk 7902 CLERK 800 20 7499 allen salesman 7698 CLERK 1600 300 smith clerk 7369 17-DEC-80 7902 20 800 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30 7521 ward salesman 7698 22-FEB-81 1250 500 30 7566 jones manager 7839 02-APR-81 2975 20 7654 martin salesman 7698 28-SEP-81 1250 1400 30 7698 blake manager 7839 0