锘??xml version="1.0" encoding="utf-8" standalone="yes"?>一本久久综合亚洲鲁鲁五月天,亚洲国产精品无码久久,热99re久久国超精品首页 http://www.shnenglu.com/qiaodong/archive/2007/07/19/28355.html涔旀爧 涔旀爧 Thu, 19 Jul 2007 06:42:00 GMT http://www.shnenglu.com/qiaodong/archive/2007/07/19/28355.html http://www.shnenglu.com/qiaodong/comments/28355.html http://www.shnenglu.com/qiaodong/archive/2007/07/19/28355.html#Feedback 0 http://www.shnenglu.com/qiaodong/comments/commentRss/28355.html http://www.shnenglu.com/qiaodong/services/trackbacks/28355.html MySQL鏀寔澶ч噺鐨勫垪綾誨瀷錛屽畠鍙互琚垎涓?綾伙細鏁板瓧綾誨瀷銆佹棩鏈熷拰鏃墮棿綾誨瀷浠ュ強瀛楃涓?瀛楃)綾誨瀷銆傛湰鑺傞鍏堢粰鍑哄彲鐢ㄧ被鍨嬬殑涓涓榪幫紝騫朵笖鎬葷粨姣忎釜鍒楃被鍨嬬殑瀛樺偍闇姹傦紝鐒跺悗鎻愪緵姣忎釜綾諱腑鐨勭被鍨嬫ц川鐨勬洿璇︾粏鐨勬弿榪般傛榪版湁鎰忕畝鍖栵紝鏇磋緇嗙殑璇存槑搴旇鑰冭檻鍒版湁鍏崇壒瀹氬垪綾誨瀷鐨勯檮鍔犱俊鎭紝渚嬪浣犺兘涓哄叾鎸囧畾鍊肩殑鍏佽鏍煎紡銆? 鐢盡ySQL鏀寔鐨勫垪綾誨瀷鍒楀湪涓嬮潰銆備笅鍒椾唬鐮佸瓧姣嶇敤浜庢弿榪頒腑錛? M 鎸囧嚭鏈澶х殑鏄劇ず灝哄銆傛渶澶х殑鍚堟硶鐨勬樉紺哄昂瀵告槸 255 銆? D 閫傜敤浜庢誕鐐圭被鍨嬪茍涓旀寚鍑鴻窡闅忓湪鍗佽繘鍒跺皬鏁扮偣鍚庣殑鏁扮爜鐨勬暟閲忋傛渶澶у彲鑳界殑鍊兼槸30錛屼絾鏄簲璇ヤ笉澶т簬M-2銆? 鏂規(guī)嫭鍙?“[”鍜?#8220;]”)鎸囧嚭鍙夌殑綾誨瀷淇グ絎︾殑閮ㄥ垎銆? 娉ㄦ剰錛屽鏋滀綘鎸囧畾涓涓簡涓篫EROFILL錛孧ySQL灝嗕負璇ュ垪鑷姩鍦板鍔燯NSIGNED灞炴с? TINYINT[(M)] [UNSIGNED] [ZEROFILL] 涓涓緢灝忕殑鏁存暟銆傛湁絎﹀彿鐨勮寖鍥存槸-128鍒?27錛屾棤絎﹀彿鐨勮寖鍥存槸0鍒?55銆? SMALLINT[(M)] [UNSIGNED] [ZEROFILL] 涓涓皬鏁存暟銆傛湁絎﹀彿鐨勮寖鍥存槸-32768鍒?2767錛屾棤絎﹀彿鐨勮寖鍥存槸0鍒?5535銆? MEDIUMINT[(M)] [UNSIGNED] [ZEROFILL] 涓涓腑絳夊ぇ灝忔暣鏁般傛湁絎﹀彿鐨勮寖鍥存槸-8388608鍒?388607錛屾棤絎﹀彿鐨勮寖鍥存槸0鍒?6777215銆? INT[(M)] [UNSIGNED] [ZEROFILL] 涓涓甯稿ぇ灝忔暣鏁般傛湁絎﹀彿鐨勮寖鍥存槸-2147483648鍒?147483647錛屾棤絎﹀彿鐨勮寖鍥存槸0鍒?294967295銆? INTEGER[(M)] [UNSIGNED] [ZEROFILL] 榪欐槸INT鐨勪竴涓悓涔夎瘝銆? BIGINT[(M)] [UNSIGNED] [ZEROFILL] 涓涓ぇ鏁存暟銆傛湁絎﹀彿鐨勮寖鍥存槸-9223372036854775808鍒?223372036854775807錛屾棤絎﹀彿鐨勮寖鍥存槸0鍒? 18446744073709551615銆傛敞鎰忥紝鎵鏈夌畻鏈繍綆楃敤鏈夌鍙風殑BIGINT鎴朌OUBLE鍊煎畬鎴愶紝鍥犳浣犱笉搴旇浣跨敤澶т簬9223372036854775807錛?3浣?鐨勬湁絎﹀彿澶ф暣鏁幫紝闄や簡浣嶅嚱鏁幫紒娉ㄦ剰錛屽綋涓や釜鍙傛暟鏄疘NTEGER鍊兼椂錛?銆?鍜?灝嗕嬌鐢˙IGINT榪愮畻錛佽繖鎰忓懗鐫濡傛灉浣犱箻2涓ぇ鏁存暟(鎴栨潵鑷簬榪斿洖鏁存暟鐨勫嚱鏁?錛屽鏋滅粨鏋滃ぇ浜?223372036854775807錛屼綘鍙互寰楀埌鎰忓鐨勭粨鏋溿備竴涓誕鐐規(guī)暟瀛楋紝涓嶈兘鏄棤絎﹀彿鐨勶紝瀵逛竴涓崟綺懼害嫻偣鏁幫紝鍏剁簿搴﹀彲浠ユ槸<=24錛屽涓涓弻綺懼害嫻偣鏁幫紝鏄湪25 鍜?3涔嬮棿錛岃繖浜涚被鍨嬪FLOAT鍜孌OUBLE綾誨瀷椹笂鍦ㄤ笅闈㈡弿榪般侳LOAT(X)鏈夊搴旂殑FLOAT鍜孌OUBLE鐩稿悓鐨勮寖鍥達紝浣嗘槸鏄劇ず灝哄鍜屽皬鏁頒綅鏁版槸鏈畾涔夌殑銆傚湪MySQL3.23涓紝榪欐槸涓涓湡姝g殑嫻偣鍊箋傚湪鏇存棭鐨凪ySQL鐗堟湰涓紝FLOAT(precision)鎬繪槸鏈?浣嶅皬鏁般傝鍙ユ硶涓轟簡ODBC鍏煎鎬ц屾彁渚涖? FLOAT[(M,D)] [ZEROFILL] 涓涓皬(鍗曠簿瀵?嫻偣鏁板瓧銆備笉鑳芥棤絎﹀彿銆傚厑璁哥殑鍊兼槸-3.402823466E+38鍒?1.175494351E-38錛? 鍜?.175494351E-38鍒?.402823466E+38銆侻鏄樉紺哄搴﹁孌鏄皬鏁扮殑浣嶆暟銆傛病鏈夊弬鏁扮殑FLOAT鎴栨湁<24 鐨勪竴涓弬鏁拌〃紺轟竴涓崟綺懼瘑嫻偣鏁板瓧銆? DOUBLE[(M,D)] [ZEROFILL] 涓涓甯稿ぇ灝?鍙岀簿瀵?嫻偣鏁板瓧銆備笉鑳芥棤絎﹀彿銆傚厑璁哥殑鍊兼槸-1.7976931348623157E+308鍒?2.2250738585072014E-308銆?0鍜?.2250738585072014E-308鍒?.7976931348623157E+308銆侻鏄樉紺哄搴﹁孌鏄皬鏁頒綅鏁般傛病鏈変竴涓弬鏁扮殑DOUBLE鎴朏LOAT(X)錛?5 < = X < = 53錛変唬琛ㄤ竴涓弻綺懼瘑嫻偣鏁板瓧銆? DOUBLE PRECISION[(M,D)] [ZEROFILL] REAL[(M,D)] [ZEROFILL] 榪欎簺鏄疍OUBLE鍚屼箟璇嶃? DECIMAL[(M[,D])] [ZEROFILL] 涓涓湭鍘嬬緝(unpack)鐨勬誕鐐規(guī)暟瀛椼備笉鑳芥棤絎﹀彿銆傝涓哄鍚屼竴涓狢HAR鍒楋細“鏈帇緙?#8221;鎰忓懗鐫鏁板瓧浣滀負涓涓瓧絎︿覆琚瓨鍌紝鍊肩殑姣忎竴浣嶄嬌鐢ㄤ竴涓瓧絎︺傚皬鏁扮偣錛屽茍涓斿浜庤礋鏁幫紝“-”絎﹀彿涓嶅湪M涓綆椼傚鏋淒鏄?錛屽煎皢娌℃湁灝忔暟鐐規(guī)垨灝忔暟閮ㄥ垎銆侱ECIMAL鍊肩殑鏈澶ц寖鍥翠笌DOUBLE鐩稿悓錛屼絾鏄涓涓粰瀹氱殑DECIMAL鍒楋紝瀹為檯鐨勮寖鍥村彲浠ラ氳繃M鍜孌鐨勯夋嫨琚檺鍒躲傚鏋淒琚渷鐣ワ紝瀹冭璁劇疆涓?銆傚鏋淢琚渷鎺夛紝瀹冭璁劇疆涓?0銆傛敞鎰忥紝鍦∕ySQL3.22閲岋紝M鍙傛暟鍖呮嫭絎﹀彿鍜屽皬鏁扮偣銆? NUMERIC(M,D) [ZEROFILL] 榪欐槸DECIMAL鐨勪竴涓悓涔夎瘝銆? DATE 涓涓棩鏈熴傛敮鎸佺殑鑼冨洿鏄?1000-01-01'鍒?9999-12-31'銆侻ySQL浠?YYYY-MM-DD'鏍煎紡鏉ユ樉紺篋ATE鍊鹼紝浣嗘槸鍏佽浣犱嬌鐢ㄥ瓧絎︿覆鎴栨暟瀛楁妸鍊艱祴緇橠ATE鍒椼? DATETIME 涓涓棩鏈熷拰鏃墮棿緇勫悎銆傛敮鎸佺殑鑼冨洿鏄?1000-01-01 00:00:00'鍒?9999-12-31 23:59:59'銆侻ySQL浠?YYYY-MM-DD HH:MM:SS'鏍煎紡鏉ユ樉紺篋ATETIME鍊鹼紝浣嗘槸鍏佽浣犱嬌鐢ㄥ瓧絎︿覆鎴栨暟瀛楁妸鍊艱祴緇橠ATETIME鐨勫垪銆? TIMESTAMP[(M)] 涓涓椂闂存埑璁般傝寖鍥存槸'1970-01-01 00:00:00'鍒?037騫寸殑鏌愭椂銆侻ySQL浠YYYMMDDHHMMSS銆乊YMMDDHHMMSS銆乊YYYMMDD鎴朰YMMDD鏍煎紡鏉ユ樉紺篢IMESTAMP鍊鹼紝鍙栧喅浜庢槸鍚鏄?4錛堟垨鐪佺暐)銆?2銆?鎴?錛屼絾鏄厑璁鎬綘浣跨敤瀛楃涓叉垨鏁板瓧鎶婂艱祴緇橳IMESTAMP鍒椼備竴涓猅IMESTAMP鍒楀浜庤褰曚竴涓狪NSERT鎴朥PDATE鎿嶄綔鐨勬棩鏈熷拰鏃墮棿鏄湁鐢ㄧ殑錛屽洜涓哄鏋滀綘涓嶈嚜宸辯粰瀹冭祴鍊鹼紝瀹冭嚜鍔ㄥ湴琚緗負鏈榪戞搷浣滅殑鏃ユ湡鍜屾椂闂淬備綘浠ュ彲浠ラ氳繃璧嬬粰瀹冧竴涓狽ULL鍊艱緗畠涓哄綋鍓嶇殑鏃ユ湡鍜屾椂闂淬? TIME 涓涓椂闂淬傝寖鍥存槸'-838:59:59'鍒?838:59:59'銆侻ySQL浠?HH:MM:SS'鏍煎紡鏉ユ樉紺篢IME鍊鹼紝浣嗘槸鍏佽浣犱嬌鐢ㄥ瓧絎︿覆鎴栨暟瀛楁妸鍊艱祴緇橳IME鍒椼? YEAR[(2|4)] 涓涓?鎴?浣嶆暟瀛楁牸寮忕殑騫?緙虹渷鏄?浣?銆傚厑璁哥殑鍊兼槸1901鍒?155錛屽拰0000錛?浣嶅勾鏍煎紡錛夛紝濡傛灉浣犱嬌鐢?浣嶏紝1970-2069( 70-69)銆侻ySQL浠YYY鏍煎紡鏉ユ樉紺篩EAR鍊鹼紝浣嗘槸鍏佽浣犳妸浣跨敤瀛楃涓叉垨鏁板瓧鍊艱祴緇橸EAR鍒椼傦紙YEAR綾誨瀷鍦∕ySQL3.22涓槸鏂扮被鍨嬨傦級 CHAR(M) [BINARY] 涓涓畾闀垮瓧絎︿覆錛屽綋瀛樺偍鏃訛紝鎬繪槸鏄敤絀烘牸濉弧鍙寵竟鍒版寚瀹氱殑闀垮害銆侻鐨勮寖鍥存槸1 锝?255涓瓧絎︺傚綋鍊艱媯绱㈡椂錛岀┖鏍煎熬閮ㄨ鍒犻櫎銆侰HAR鍊兼牴鎹己鐪佸瓧絎﹂泦浠ュぇ灝忓啓涓嶅尯鍒嗙殑鏂瑰紡鎺掑簭鍜屾瘮杈冿紝闄ら潪緇欏嚭BINARY鍏抽敭璇嶃侼ATIONAL CHAR錛堢煭褰㈠紡NCHAR)鏄疉NSI SQL鐨勬柟寮忔潵瀹氫箟CHAR鍒楀簲璇ヤ嬌鐢ㄧ己鐪佸瓧絎﹂泦銆傝繖鏄疢ySQL鐨勭己鐪併侰HAR鏄疌HARACTER鐨勪竴涓緝鍐欍? [NATIONAL] VARCHAR(M) [BINARY] 涓涓彉闀垮瓧絎︿覆銆傛敞鎰忥細褰撳艱瀛樺偍鏃訛紝灝鵑儴鐨勭┖鏍艱鍒犻櫎(榪欎笉鍚屼簬ANSI SQL瑙勮寖)銆侻鐨勮寖鍥存槸1 锝?255涓瓧絎︺?VARCHAR鍊兼牴鎹己鐪佸瓧絎﹂泦浠ュぇ灝忓啓涓嶅尯鍒嗙殑鏂瑰紡鎺掑簭鍜屾瘮杈冿紝闄ら潪緇欏嚭BINARY鍏抽敭璇嶅箋?VARCHAR鏄疌HARACTER VARYING涓涓緝鍐欍? TINYBLOB TINYTEXT 涓涓狟LOB鎴朤EXT鍒楋紝鏈澶ч暱搴︿負255(2^8-1)涓瓧絎︺? BLOB TEXT 涓涓狟LOB鎴朤EXT鍒楋紝鏈澶ч暱搴︿負65535(2^16-1)涓瓧絎︺? MEDIUMBLOB MEDIUMTEXT 涓涓狟LOB鎴朤EXT鍒楋紝鏈澶ч暱搴︿負16777215(2^24-1)涓瓧絎︺? LONGBLOB LONGTEXT 涓涓狟LOB鎴朤EXT鍒楋紝鏈澶ч暱搴︿負4294967295(2^32-1)涓瓧絎︺? ENUM('value1','value2',...) 鏋氫婦銆備竴涓粎鏈変竴涓肩殑瀛楃涓插璞★紝榪欎釜鍊煎紡閫夎嚜涓庡煎垪琛?value1'銆?value2', ...,鎴朜ULL銆備竴涓狤NUM鏈澶氳兘鏈?5535涓嶅悓鐨勫箋? SET('value1','value2',...) 涓涓泦鍚堛傝兘鏈夐浂涓垨澶氫釜鍊肩殑涓涓瓧絎︿覆瀵硅薄錛屽叾涓瘡涓涓繀欏諱粠鍊煎垪琛?value1', 'value2', ...閫夊嚭銆備竴涓猄ET鏈澶氳兘鏈?4涓垚鍛樸?/span>
]]> mysql鏃犳硶榪滅▼榪炴帴鐨勯棶棰?/title> http://www.shnenglu.com/qiaodong/archive/2007/03/16/19956.html涔旀爧 涔旀爧 Fri, 16 Mar 2007 03:59:00 GMT http://www.shnenglu.com/qiaodong/archive/2007/03/16/19956.html http://www.shnenglu.com/qiaodong/comments/19956.html http://www.shnenglu.com/qiaodong/archive/2007/03/16/19956.html#Feedback 0 http://www.shnenglu.com/qiaodong/comments/commentRss/19956.html http://www.shnenglu.com/qiaodong/services/trackbacks/19956.html 褰撴棤娉曡繙紼嬭繛鎺ョ殑鏃跺?寤鴻鏂板緩涓涓敤鎴?騫剁‘鍏鋒湁鍏ㄩ儴鏉冮檺,闂涓鑸彲浠ュ緱鍒拌В鍐? ]]> VC 涓嬭繛鎺ysql鏁版嵁搴? http://www.shnenglu.com/qiaodong/archive/2007/03/07/19368.html涔旀爧 涔旀爧 Wed, 07 Mar 2007 08:29:00 GMT http://www.shnenglu.com/qiaodong/archive/2007/03/07/19368.html http://www.shnenglu.com/qiaodong/comments/19368.html http://www.shnenglu.com/qiaodong/archive/2007/03/07/19368.html#Feedback 0 http://www.shnenglu.com/qiaodong/comments/commentRss/19368.html http://www.shnenglu.com/qiaodong/services/trackbacks/19368.html 1錛氬湪瀹夎濂絤ysql 5.0 2:聽聽 瀹夎GUI綆$悊宸ュ叿錛屾垜鐢ㄧ殑鐨勬槸mysql -front 3:聽聽聽瀹夎濂介┍鍔紝榪欓噷鎴戜嬌鐢ㄧ殑鏄痬ysql-connector-odbc-3.51.12-win32錛岃繖涓彲浠ュ湪mysql瀹樼綉涓嬭澆鍒?br />4錛氳繛鎺ュ瓧絎︿覆錛?Driver={mySQL ODBC 3.51 Driver};Server=localhost;" 聽聽"Port=3306;Option=4;Database=storage;Uid=sa;Pwd=;" 聽聽聽聽聽聽聽聽聽IP鍦板潃涓猴細localhost聽;绔彛涓猴細3306錛涢夐」榛樿涓?4 ; 鏁版嵁搴撳悕錛歴torage; 鐢ㄦ埛鍚嶏細sa; 瀵嗙爜涓虹┖ 鍙﹀鍦?net騫沖彴涓嬭繛鎺ysql銆鍙互鍙傜収涓嬮潰榪欑瘒鏂囩珷:http://www.microsoft.com/china/community/Columns/Luyan/6.mspx 鎬諱綋鎰熻mysql 鏄腑灝忎紒涓氳璁℃暟鎹鐞嗗繀欏葷殑緋葷粺, 甯屾湜澶у閮借兘鍋氬ソ. ]]> 鑷畾涔夎嚜鍔ㄧ紪鍙鳳紙琛ュ彿涓庨潪琛ュ彿錛?/title> http://www.shnenglu.com/qiaodong/archive/2007/03/06/19293.html涔旀爧 涔旀爧 Tue, 06 Mar 2007 05:38:00 GMT http://www.shnenglu.com/qiaodong/archive/2007/03/06/19293.html http://www.shnenglu.com/qiaodong/comments/19293.html http://www.shnenglu.com/qiaodong/archive/2007/03/06/19293.html#Feedback 0 http://www.shnenglu.com/qiaodong/comments/commentRss/19293.html http://www.shnenglu.com/qiaodong/services/trackbacks/19293.html --
寤鴻〃璇彞
CREATE
聽
TABLE
聽
[
MyTable
]
聽( 聽聽聽聽
[
MyId
]
聽
[
varchar
]
聽(
50
)聽COLLATE聽Chinese_PRC_CI_AS聽
NULL
聽, 聽聽聽聽
[
MyName
]
聽
[
varchar
]
聽(
50
)聽COLLATE聽Chinese_PRC_CI_AS聽
NULL
聽 )聽
ON
聽
[
PRIMARY
]
GO
--
寰楀埌鏂扮殑緙栧彿錛堜笉鑰冭檻琛ュ彿錛?/span>
create
聽
function
聽f_NextID(
@myDate
聽
datetime
)
Returns
聽
char
(
12
)
as
begin
聽 聽聽聽聽
Declare
聽
@temp
聽
char
(
6
) 聽聽聽聽聽
Declare
聽
@ret
聽
char
(
12
) 聽聽聽聽
set
聽
@temp
=
Substring
(
Convert
(
char
,
@myDate
),
9
,
2
)
+
Substring
(
Convert
(
char
,
@myDate
),
1
,
2
)
+
Substring
(
Convert
(
char
,
@myDate
),
4
,
2
) 聽聽聽聽
if
(
@temp
聽
in
聽(
SELECT
聽
distinct
聽myid
=
left
(myid,
6
)聽
FROM
聽mytable聽
WITH
(XLOCK,PAGLOCK))) 聽聽聽聽聽聽聽聽聽聽聽聽
Select
聽
@ret
=
@temp
+
right
(
1000001
+
Isnull
(
Max
(
Right
(MyID,
6
)),
0
),
6
)聽
from
聽Mytable聽
with
(xlock,paglock)聽
where
聽
@temp
=
left
(MyID,
6
) 聽聽聽聽
else
聽聽聽聽聽聽聽聽
Select
聽
@ret
=
@temp
+
'
000001
'
聽
from
聽Mytable聽
with
(xlock,paglock) 聽聽聽聽
return
聽
@ret
end
聽
GO
drop
聽
table
聽MyTable
--
寤鴻〃璇彞
CREATE
聽
TABLE
聽
[
MyTable
]
聽( 聽聽聽聽
[
MyId
]
聽
[
varchar
]
聽(
50
)聽COLLATE聽Chinese_PRC_CI_AS聽
NULL
聽, 聽聽聽聽
[
MyName
]
聽
[
varchar
]
聽(
50
)聽COLLATE聽Chinese_PRC_CI_AS聽
NULL
聽 )聽
ON
聽
[
PRIMARY
]
GO
--
寰楀埌鏂扮殑緙栧彿錛堣瀺鍚堜簡琛ュ彿澶勭悊錛?/span>
create
聽
FUNCTION
聽f_NextNewID(
@myDate
聽
datetime
)
RETURNS
聽
char
(
12
)
AS
BEGIN
聽聽聽聽
Declare
聽
@temp
聽
char
(
6
) 聽聽聽聽聽
Declare
聽
@ret
聽
char
(
12
) 聽聽聽聽
set
聽
@temp
=
Substring
(
Convert
(
char
,
@myDate
),
9
,
2
)
+
Substring
(
Convert
(
char
,
@myDate
),
1
,
2
)
+
Substring
(
Convert
(
char
,
@myDate
),
4
,
2
) 聽聽聽聽
DECLARE
聽
@r
聽
char
(
12
) 聽聽聽聽 聽聽聽聽
SELECT
聽
@r
=
@temp
+
RIGHT
(
1000001
+
MIN
(MyId),
6
) 聽聽聽聽
FROM
( 聽聽聽聽聽聽聽聽
SELECT
聽MyId
=
RIGHT
(MyId,
6
)聽
FROM
聽MyTable聽
WITH
(XLOCK,PAGLOCK) 聽聽聽聽聽聽聽聽
UNION
聽
ALL
聽
SELECT
聽
0
聽聽聽聽)a聽 聽聽
WHERE
聽
NOT
聽
EXISTS
( 聽聽聽聽聽聽聽聽
SELECT
聽
*
聽
FROM
聽MyTable聽聽
WITH
(XLOCK,PAGLOCK) 聽聽聽聽聽聽聽聽
WHERE
聽MyId
=
@temp
+
RIGHT
(
1000001
+
a.myID,
6
)) 聽聽聽聽
RETURN
(
@r
)
END
GO
--
嫻嬭瘯璇彞(鍙敼鍙樻椂闂存祴璇曚竴涓嬶級
insert
聽MyTable聽
values
聽(dbo.f_NextNewID(
GetDate
()),
'
one
'
)
insert
聽MyTable聽
values
聽(dbo.f_NextNewID(
GetDate
()),
'
two
'
)
insert
聽MyTable聽
values
聽(dbo.f_NextNewID(
GetDate
()),
'
three
'
)
insert
聽MyTable聽
values
聽(dbo.f_NextNewID(
GetDate
()),
'
four
'
)
insert
聽MyTable聽
values
聽(dbo.f_NextNewID(
GetDate
()),
'
five
'
)
insert
聽MyTable聽
values
聽(dbo.f_NextNewID(
GetDate
()),
'
six
'
)
Select
聽
*
聽
from
聽MyTable聽
order
聽
by
聽MyId
GO
delete
聽MyTable聽
where
聽myId
=
'
060629000002
'
delete
聽MyTable聽
where
聽myId
=
'
060629000005
'
Select
聽
*
聽
from
聽MyTable聽
order
聽
by
聽MyId
Go
insert
聽MyTable聽
values
聽(dbo.f_NextNewID(
GetDate
()),
'
nexttwo
'
)
insert
聽MyTable聽
values
聽(dbo.f_NextNewID(
GetDate
()),
'
nextfive
'
)
Select
聽
*
聽
from
聽MyTable聽
order
聽
by
聽MyId
GO
摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟摟 SQL涓嬫祴璇曟垚鍔?br />
]]> 鏁版嵁搴撴枃绔犺鎰?/title> http://www.shnenglu.com/qiaodong/archive/2006/12/28/16949.html涔旀爧 涔旀爧 Thu, 28 Dec 2006 09:17:00 GMT http://www.shnenglu.com/qiaodong/archive/2006/12/28/16949.html http://www.shnenglu.com/qiaodong/comments/16949.html http://www.shnenglu.com/qiaodong/archive/2006/12/28/16949.html#Feedback 0 http://www.shnenglu.com/qiaodong/comments/commentRss/16949.html http://www.shnenglu.com/qiaodong/services/trackbacks/16949.html 浠ヤ笅鏄?a title="aladdin_leon鐨勫崥瀹細Aladdin鐨勬濊? >Aladdin鐨勬枃绔?聽----- Atomic(鍘熷瓙鎬?錛?/font> 鍙暣涓暟鎹簱浜嬪姟鏄笉鍙垎鍓茬殑宸ヤ綔鍗曞厓銆傚彧鏈変簨鍔′腑鎵鏈夌殑鎿嶄綔鎵ц鎴愬姛錛屾墠綆楁暣涓簨鍔℃垚鍔燂紱浜嬪姟涓換浣曚竴涓猄QL璇彞鎵ц澶辮觸錛岄偅涔堝凡緇忔墽琛屾垚鍔熺殑SQL璇彞涔熷繀欏繪挙閿錛屾暟鎹簱鐘舵佸簲璇ラ鍥炲埌鎵ц浜嬪姟鍓嶇殑鐘舵併傞氳繃涓婇潰鐨勪緥瀛愭垜浠凡緇忕湅寰楀緢娓呮浜嗐?br />聽聽 ----- Consistency(涓鑷存?錛?/font> 鎸囨暟鎹簱浜嬪姟涓嶈兘鐮村潖鍏崇郴鏁版嵁鐨勫畬鏁存т互鍙婁笟鍔¢昏緫涓婄殑涓鑷存с備緥濡傦紝涓嶇涓婇潰鐨勪緥瀛愰噷闈Q甯佽漿璐︾殑浜嬪姟鎴愬姛榪樻槸澶辮觸錛岄兘搴旇淇濊瘉浜嬪姟緇撴潫鍚巕q_account琛ㄤ腑bill鍜宼om鐨凲Q甯佹婚涓?000鐐廣?br />聽----- Isolation(闅旂鎬?錛?/font> 鎸囩殑鏄湪騫跺彂鐨勭幆澧冧箣涓紝褰撲笉鍚岀殑浜嬪姟鍚屾椂鎿嶄綔鐩稿悓鐨勬暟鎹椂錛屾瘡涓簨鍔¢兘鏈夊悇鑷殑瀹屾暣鏁版嵁絀洪棿錛岃繖閲屾秹鍙婄殑浜嬫儏灝卞浜嗭紝鎴戞兂鍦ㄥ悗闈㈠崟鐙葷粨鎴愪竴綃囨枃绔犮?br />聽 ----- Durability(鎸佷箙鎬?錛?/font> 鎸囩殑鏄彧鏈変簨鍔℃垚鍔熺粨鏉燂紝瀹冨鏁版嵁搴撴墍鍋氱殑鏇存柊灝卞繀欏繪案涔呬繚瀛樹笅鏉ャ傚嵆浣垮彂鐢熺郴緇熷穿婧冿紝閲嶆柊鍚姩鏁版嵁搴撳悗錛屾暟鎹簱榪樿兘鎭㈠鍒頒簨鍔℃垚鍔熺粨鏉熸椂鐨勭姸鎬併?/font> 杈懼埌榪欐牱鐨勭粨鏋滈渶瑕佷互涓嬬殑鏂規(guī)硶:聽----- 聽BEGIN 浜嬪姟鐨勫紑濮嬭竟鐣?br />聽-----聽 COMMIT 浜嬪姟鐨勬甯哥粨鏉熻竟鐣岋紝鎻愪氦浜嬪姟錛屾案涔呬繚瀛樿浜嬪姟鏇存柊鍚庣殑鏁版嵁搴撶姸鎬併?br />聽-----聽 ROLLBACK 浜嬪姟鐨勫紓甯哥粨鏉熻竟鐣岋紝鎾ら攢浜嬪姟錛屼嬌鏁版嵁閫鍥炲埌鎵ц浜嬪姟鍓嶇殑鍒濆鐘舵併?br /> 鎴戠幇鍦ㄧ粰鑷繁涓涓換鍔?鏄庡ぉ鏃╀笂緇欒嚜宸變竴涓瓟妗?闂灝辨槸:嫻佺▼涓湪浠涔堟椂鍊欐槸BEGIN ,COMMIT ,ROLLBACK 鐨勭姸鎬? ]]>
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