锘??xml version="1.0" encoding="utf-8" standalone="yes"?>亚洲丰满熟女一区二区哦,亚洲自偷自拍另类12p,亚洲成在人天堂在线http://m.tkk7.com/sslaowan/category/49285.html鍋氫紭縐鐨勭▼搴忓憳zh-cnTue, 02 Aug 2011 12:57:53 GMTTue, 02 Aug 2011 12:57:53 GMT60 Oracle DDL鍜孌ML鍩烘湰璇硶紺轟緥http://m.tkk7.com/sslaowan/articles/355585.html闆墮洦鍏惰挋闆墮洦鍏惰挋Tue, 02 Aug 2011 05:34:00 GMThttp://m.tkk7.com/sslaowan/articles/355585.htmlhttp://m.tkk7.com/sslaowan/comments/355585.htmlhttp://m.tkk7.com/sslaowan/articles/355585.html#Feedback0http://m.tkk7.com/sslaowan/comments/commentRss/355585.htmlhttp://m.tkk7.com/sslaowan/services/trackbacks/355585.html

DDL

鏂板緩琛細(xì)
create table  琛ㄥ悕 
(
 涓婚敭瀛楁  number(15)  PRIMARY KEY ,
 瀛楁1  nVarChar2(50) default '榛樿鍊? null /not null,
 瀛楁2 number(30) null ,
)
鎴?/strong>

create table  琛ㄥ悕 
(
 涓婚敭瀛楁  number(15)  not null ,
 瀛楁1  nVarChar2(50) default '榛樿鍊? null /not null,
 瀛楁2  number(30) null  

)

澧炲姞涓婚敭綰︽潫

alter table 琛ㄥ悕

  add constraint 涓婚敭鍚?nbsp;primary key (瀛楁鍚?;
鍒犻櫎琛細(xì)
drop table [琛ㄥ悕]


鏂板瀛楁錛?/strong>
ALTER TABLE  琛ㄥ悕  ADD瀛楁鍚?span style="font-size: 10pt; font-family: 'Courier New'; color: black; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; background-position: initial initial; background-repeat: initial initial; ">  鏁版嵁綾誨瀷  default ‘榛樿鍊?span style="font-size: 10pt; font-family: 'Courier New'; color: black; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; background-position: initial initial; background-repeat: initial initial; ">’  null/not null

鏂板澶氫釜瀛楁

ALTER TABLE 琛ㄥ悕

 ADD(
   瀛楁1  鏁版嵁綾誨瀷  default ‘榛樿鍊?span style="font-size: 10pt; font-family: 'Courier New'; color: black; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; background-position: initial initial; background-repeat: initial initial; ">’  null/not null,

   瀛楁2  鏁版嵁綾誨瀷  default ‘榛樿鍊?span style="font-size: 10pt; font-family: 'Courier New'; color: black; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; background-position: initial initial; background-repeat: initial initial; ">’  null/not null,

   …

   瀛楁n  鏁版嵁綾誨瀷  default ‘榛樿鍊?span style="font-size: 10pt; font-family: 'Courier New'; color: black; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; background-position: initial initial; background-repeat: initial initial; ">’  null/not null,

)
鍒犻櫎瀛楁錛?/strong>
ALTER TABLE [琛ㄥ悕] DROP COLUMN [瀛楁鍚峕

淇敼瀛楁錛?/strong>
ALTER TABLE [琛ㄥ悕] ALTER COLUMN [瀛楁鍚峕 NVARCHAR (50) NULL

淇敼澶氫釜瀛楁

ALTER TABLE 琛ㄥ悕 modify(瀛楁1  default 'Y', 瀛楁2  default 'Y' null)

娉ㄦ剰錛氬鏋滆〃鐨勫瓧孌靛凡緇忔槸鍙互涓虹┖錛岄偅涔堜笉鑳介噸澶嶈緗負(fù)鍙互涓虹┖銆?br />
 

鏂板緩娉ㄩ噴

琛細(xì)comment on table 琛ㄥ悕  is '娉ㄩ噴';

瀛楁錛?nbsp; comment on column [鐢ㄦ埛鍚峕.琛ㄥ悕.瀛楁鍚?nbsp;is '娉ㄩ噴';

鍙傝冿細(xì)http://blog.csdn.net/liguihan88/archive/2008/09/30/3002403.aspx


DML

鎻掑叆鏁版嵁錛?/strong>
INSERT INTO [琛ㄥ悕] (瀛楁1,瀛楁2) VALUES (100,'51WINDOWS.NET')

鍒犻櫎鏁版嵁錛?/strong>
DELETE FROM [琛ㄥ悕] WHERE [瀛楁鍚峕>100

鏇存柊鏁版嵁錛?/strong>
UPDATE [琛ㄥ悕] SET [瀛楁1] = 200,[瀛楁2] = '51WINDOWS.NET' WHERE [瀛楁3] = 'HAIWA'

鍏朵粬

鏌ユ暟鎹簱鏌愪釜琛ㄧ殑鏌愪釜瀛楁鏄惁瀛樺湪

SELECT  *
FROM    Dba_Tab_Columns 
WHERE   table_name   = 'TABLE_NAME'              
        AND column_name = 'COLUMN_NAME'

娉ㄦ剰琛ㄥ悕鍜屽瓧孌靛悕涓瀹氬ぇ灝忥紝鍚﹀垯鏌ユ壘涓嶅埌



]]> 主站蜘蛛池模板： 人禽伦免费交视频播放| 免费被黄网站在观看| 亚洲乱码无人区卡1卡2卡3| 青青草a免费线观a| 久久久久亚洲AV成人网人人网站 | 三年片在线观看免费观看大全一 | eeuss影院免费92242部| av电影在线免费看| 免费在线观看你懂的| 亚洲狠狠婷婷综合久久蜜芽| 亚洲高清中文字幕免费| 亚洲成a人不卡在线观看| 久久久久国产成人精品亚洲午夜| 免费精品视频在线| 亚洲精品乱码久久久久久V| 亚洲AV成人一区二区三区AV| 久久久久免费看成人影片| 在线观看亚洲免费| 在线视频免费观看高清| 亚洲av无码专区首页| 亚洲精品美女视频| 亚洲JLZZJLZZ少妇| 亚洲va在线va天堂成人| 亚洲人成影院77777| 操美女视频免费网站| 亚洲高清一区二区三区| 吃奶摸下高潮60分钟免费视频| 免费h片在线观看网址最新| 亚洲黄色网站视频| 亚洲黄色激情视频| 久久精品国产精品亚洲艾草网 | 亚洲欧洲日产国码久在线观看| 亚洲中文字幕无码爆乳AV| 亚洲电影免费在线观看| 亚洲精品在线视频观看| 国产成人AV免费观看| 亚洲精品一级无码鲁丝片| 84pao国产成视频免费播放| 精品国产免费人成电影在线观看| 无码成A毛片免费| 亚洲欧美中文日韩视频|