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銆銆鍦?a target="_blank">涓婁竴鑺?/a>鐨勬爣棰樹腑錛岀瑪鑰呭啓鐨勬槸錛氬疄鐜板皬鏁版嵁閲忓拰嫻烽噺鏁版嵁鐨勯氱敤鍒嗛〉鏄劇ず瀛樺偍榪囩▼銆傝繖鏄洜涓哄湪灝嗘湰瀛樺偍榪囩▼搴旂敤浜庘滃姙鍏嚜鍔ㄥ寲鈥濈郴緇熺殑瀹炶返涓椂錛岀瑪鑰呭彂鐜拌繖絎笁縐嶅瓨鍌ㄨ繃紼嬪湪灝忔暟鎹噺鐨勬儏鍐典笅錛屾湁濡備笅鐜拌薄錛?
1銆佸垎欏甸熷害涓鑸淮鎸佸湪1縐掑拰3縐掍箣闂淬?
2銆佸湪鏌ヨ鏈鍚庝竴欏墊椂錛岄熷害涓鑸負5縐掕嚦8縐掞紝鍝曞垎欏墊繪暟鍙湁3欏墊垨30涓囬〉銆?
銆銆铏界劧鍦ㄨ秴澶у閲忔儏鍐典笅錛岃繖涓垎欏電殑瀹炵幇榪囩▼鏄緢蹇殑錛屼絾鍦ㄥ垎鍓嶅嚑欏墊椂錛岃繖涓?錛?縐掔殑閫熷害姣旇搗絎竴縐嶇敋鑷蟲病鏈夌粡榪囦紭鍖栫殑鍒嗛〉鏂規硶閫熷害榪樿鎱紝鍊熺敤鎴風殑璇濊灝辨槸鈥滆繕娌℃湁ACCESS鏁版嵁搴撻熷害蹇濓紝榪欎釜璁よ瘑瓚充互瀵艱嚧鐢ㄦ埛鏀懼純浣跨敤鎮ㄥ紑鍙戠殑緋葷粺銆?
銆銆絎旇呭氨姝ゅ垎鏋愪簡涓涓嬶紝鍘熸潵浜х敓榪欑鐜拌薄鐨勭棁緇撴槸濡傛鐨勭畝鍗曪紝浣嗗張濡傛鐨勯噸瑕侊細鎺掑簭鐨勫瓧孌典笉鏄仛闆嗙儲寮曪紒
銆銆鏈瘒鏂囩珷鐨勯鐩槸錛氣滄煡璇紭鍖栧強鍒嗛〉綆楁硶鏂規鈥濄傜瑪鑰呭彧鎵浠ユ妸鈥滄煡璇紭鍖栤濆拰鈥滃垎欏電畻娉曗濊繖涓や釜鑱旂郴涓嶆槸寰堝ぇ鐨勮棰樻斁鍦ㄤ竴璧鳳紝灝辨槸鍥犱負浜岃呴兘闇瑕佷竴涓潪甯擱噸瑕佺殑涓滆タ鈥曗曡仛闆嗙儲寮曘?
鍦ㄥ墠闈㈢殑璁ㄨ涓垜浠凡緇忔彁鍒頒簡錛岃仛闆嗙儲寮曟湁涓や釜鏈澶х殑浼樺娍錛?
1銆佷互鏈蹇殑閫熷害緙╁皬鏌ヨ鑼冨洿銆?
2銆佷互鏈蹇殑閫熷害榪涜瀛楁鎺掑簭銆?
銆銆絎?鏉″鐢ㄥ湪鏌ヨ浼樺寲鏃訛紝鑰岀2鏉″鐢ㄥ湪榪涜鍒嗛〉鏃剁殑鏁版嵁鎺掑簭銆?
銆銆鑰岃仛闆嗙儲寮曞湪姣忎釜琛ㄥ唴鍙堝彧鑳藉緩绔嬩竴涓紝榪欎嬌寰楄仛闆嗙儲寮曟樉寰楁洿鍔犵殑閲嶈銆傝仛闆嗙儲寮曠殑鎸戦夊彲浠ヨ鏄疄鐜扳滄煡璇紭鍖栤濆拰鈥滈珮鏁堝垎欏碘濈殑鏈鍏抽敭鍥犵礌銆?
銆銆浣嗚鏃嬌鑱氶泦绱㈠紩鍒楁棦絎﹀悎鏌ヨ鍒楃殑闇瑕侊紝鍙堢鍚堟帓搴忓垪鐨勯渶瑕侊紝榪欓氬父鏄竴涓煕鐩俱傜瑪鑰呭墠闈⑩滅儲寮曗濈殑璁ㄨ涓紝灝唂ariqi錛屽嵆鐢ㄦ埛鍙戞枃鏃ユ湡浣滀負浜嗚仛闆嗙儲寮曠殑璧峰鍒楋紝鏃ユ湡鐨勭簿紜害涓衡滄棩鈥濄傝繖縐嶄綔娉曠殑浼樼偣錛屽墠闈㈠凡緇忔彁鍒頒簡錛屽湪榪涜鍒掓椂闂存鐨勫揩閫熸煡璇腑錛屾瘮鐢↖D涓婚敭鍒楁湁寰堝ぇ鐨勪紭鍔褲?
銆銆浣嗗湪鍒嗛〉鏃訛紝鐢變簬榪欎釜鑱氶泦绱㈠紩鍒楀瓨鍦ㄧ潃閲嶅璁板綍錛屾墍浠ユ棤娉曚嬌鐢╩ax鎴杕in鏉ユ渶涓哄垎欏電殑鍙傜収鐗╋紝榪涜屾棤娉曞疄鐜版洿涓洪珮鏁堢殑鎺掑簭銆傝屽鏋滃皢ID涓婚敭鍒椾綔涓鴻仛闆嗙儲寮曪紝閭d箞鑱氶泦绱㈠紩闄や簡鐢ㄤ互鎺掑簭涔嬪錛屾病鏈変換浣曠敤澶勶紝瀹為檯涓婃槸嫻垂浜嗚仛闆嗙儲寮曡繖涓疂璐電殑璧勬簮銆?
銆銆涓鴻В鍐寵繖涓煕鐩撅紝絎旇呭悗鏉ュ張娣誨姞浜嗕竴涓棩鏈熷垪錛屽叾榛樿鍊間負getdate()銆傜敤鎴峰湪鍐欏叆璁板綍鏃訛紝榪欎釜鍒楄嚜鍔ㄥ啓鍏ュ綋鏃剁殑鏃墮棿錛屾椂闂寸簿紜埌姣銆傚嵆浣胯繖鏍鳳紝涓轟簡閬垮厤鍙兘鎬у緢灝忕殑閲嶅悎錛岃繕瑕佸湪姝ゅ垪涓婂垱寤篣NIQUE綰︽潫銆傚皢姝ゆ棩鏈熷垪浣滀負鑱氶泦绱㈠紩鍒椼?
銆銆鏈変簡榪欎釜鏃墮棿鍨嬭仛闆嗙儲寮曞垪涔嬪悗錛岀敤鎴峰氨鏃㈠彲浠ョ敤榪欎釜鍒楁煡鎵劇敤鎴峰湪鎻掑叆鏁版嵁鏃剁殑鏌愪釜鏃墮棿孌電殑鏌ヨ錛屽張鍙互浣滀負鍞竴鍒楁潵瀹炵幇max鎴杕in錛屾垚涓哄垎欏電畻娉曠殑鍙傜収鐗┿?
銆銆緇忚繃榪欐牱鐨勪紭鍖栵紝絎旇呭彂鐜幫紝鏃犺鏄ぇ鏁版嵁閲忕殑鎯呭喌涓嬭繕鏄皬鏁版嵁閲忕殑鎯呭喌涓嬶紝鍒嗛〉閫熷害涓鑸兘鏄嚑鍗佹縐掞紝鐢氳嚦0姣銆傝岀敤鏃ユ湡孌電緝灝忚寖鍥寸殑鏌ヨ閫熷害姣斿師鏉ヤ篃娌℃湁浠諱綍榪熼挐銆傝仛闆嗙儲寮曟槸濡傛鐨勯噸瑕佸拰鐝嶈吹錛屾墍浠ョ瑪鑰呮葷粨浜嗕竴涓嬶紝涓瀹氳灝嗚仛闆嗙儲寮曞緩绔嬪湪錛?
1銆佹偍鏈棰戠箒浣跨敤鐨勩佺敤浠ョ緝灝忔煡璇㈣寖鍥寸殑瀛楁涓婏紱
2銆佹偍鏈棰戠箒浣跨敤鐨勩侀渶瑕佹帓搴忕殑瀛楁涓娿?
緇撴潫璇?/b>
銆銆鏈瘒鏂囩珷姹囬泦浜嗙瑪鑰呰繎孌靛湪浣跨敤鏁版嵁搴撴柟闈㈢殑蹇冨緱錛屾槸鍦ㄥ仛鈥滃姙鍏嚜鍔ㄥ寲鈥濈郴緇熸椂瀹炶返緇忛獙鐨勭Н绱傚笇鏈涜繖綃囨枃绔犱笉浠呰兘澶熺粰澶у鐨勫伐浣滃甫鏉ヤ竴瀹氱殑甯姪錛屼篃甯屾湜鑳借澶у鑳藉浣撲細鍒板垎鏋愰棶棰樼殑鏂規硶錛涙渶閲嶈鐨勬槸錛屽笇鏈涜繖綃囨枃绔犺兘澶熸姏鐮栧紩鐜夛紝鎺璧峰ぇ瀹剁殑瀛︿範鍜岃璁虹殑鍏磋叮錛屼互鍏卞悓淇冭繘錛屽叡鍚屼負鍏畨縐戞妧寮鴻浜嬩笟鍜岄噾鐩懼伐紼嬪仛鍑鴻嚜宸辨渶澶х殑鍔姏銆?
銆銆鏈鍚庨渶瑕佽鏄庣殑鏄紝鍦ㄨ瘯楠屼腑錛屾垜鍙戠幇鐢ㄦ埛鍦ㄨ繘琛屽ぇ鏁版嵁閲忔煡璇㈢殑鏃跺欙紝瀵規暟鎹簱閫熷害褰卞搷鏈澶х殑涓嶆槸鍐呭瓨澶у皬錛岃屾槸CPU銆傚湪鎴戠殑P4 2.4鏈哄櫒涓婅瘯楠岀殑鏃跺欙紝鏌ョ湅鈥滆祫婧愮鐞嗗櫒鈥濓紝CPU緇忓父鍑虹幇鎸佺畫鍒?00%鐨勭幇璞★紝鑰屽唴瀛樼敤閲忓嵈騫舵病鏈夋敼鍙樻垨鑰呰娌℃湁澶х殑鏀瑰彉銆傚嵆浣垮湪鎴戜滑鐨凥P ML 350 G3鏈嶅姟鍣ㄤ笂璇曢獙鏃訛紝CPU宄板間篃鑳借揪鍒?0%錛屼竴鑸寔緇湪70%宸﹀彸銆?
銆銆鏈枃鐨勮瘯楠屾暟鎹兘鏄潵鑷垜浠殑HP ML 350鏈嶅姟鍣ㄣ傛湇鍔″櫒閰嶇疆錛氬弻Inter Xeon 瓚呯嚎紼?CPU 2.4G錛屽唴瀛?G錛屾搷浣滅郴緇焀indows Server 2003 Enterprise Edition錛屾暟鎹簱SQL Server 2000 SP3
鏂囩珷寮曠敤錛?a >http://www.vckbase.com/document/viewdoc/?id=1310
CREATE procedure pagination1
(@pagesize int, --欏甸潰澶у皬錛屽姣忛〉瀛樺偍20鏉¤褰?
@pageindex int --褰撳墠欏電爜
)
as
set nocount on
begin
declare @indextable table(id int identity(1,1),nid int) --瀹氫箟琛ㄥ彉閲?
declare @PageLowerBound int --瀹氫箟姝ら〉鐨勫簳鐮?
declare @PageUpperBound int --瀹氫箟姝ら〉鐨勯《鐮?
set @PageLowerBound=(@pageindex-1)*@pagesize
set @PageUpperBound=@PageLowerBound+@pagesize
set rowcount @PageUpperBound
insert into @indextable(nid) select gid from TGongwen
銆銆銆銆銆銆where fariqi >dateadd(day,-365,getdate()) order by fariqi desc
select O.gid,O.mid,O.title,O.fadanwei,O.fariqi from TGongwen O,@indextable t
where O.gid=t.nid and t.id>@PageLowerBound
and t.id<=@PageUpperBound order by t.id
end
set nocount off銆銆浠ヤ笂瀛樺偍榪囩▼榪愮敤浜哠QL SERVER鐨勬渶鏂版妧鏈曗曡〃鍙橀噺銆傚簲璇ヨ榪欎釜瀛樺偍榪囩▼涔熸槸涓涓潪甯鎬紭縐鐨勫垎欏靛瓨鍌ㄨ繃紼嬨傚綋鐒訛紝鍦ㄨ繖涓繃紼嬩腑錛屾偍涔熷彲浠ユ妸鍏朵腑鐨勮〃鍙橀噺鍐欐垚涓存椂琛細CREATE TABLE #Temp銆備絾寰堟槑鏄撅紝鍦⊿QL SERVER涓紝鐢ㄤ復鏃惰〃鏄病鏈夌敤琛ㄥ彉閲忓揩鐨勩傛墍浠ョ瑪鑰呭垰寮濮嬩嬌鐢ㄨ繖涓瓨鍌ㄨ繃紼嬫椂錛屾劅瑙夐潪甯哥殑涓嶉敊錛岄熷害涔熸瘮鍘熸潵鐨凙DO鐨勫ソ銆備絾鍚庢潵錛屾垜鍙堝彂鐜頒簡姣旀鏂規硶鏇村ソ鐨勬柟娉曘?
銆銆絎旇呮浘鍦ㄧ綉涓婄湅鍒頒簡涓綃囧皬鐭枃銆婁粠鏁版嵁琛ㄤ腑鍙栧嚭絎琻鏉″埌絎琺鏉$殑璁板綍鐨勬柟娉曘嬶紝鍏ㄦ枃濡備笅錛?
浠巔ublish 琛ㄤ腑鍙栧嚭絎?n 鏉″埌絎?m 鏉$殑璁板綍錛? SELECT TOP m-n+1 * FROM publish WHERE (id NOT IN 銆銆銆銆(SELECT TOP n-1 id 銆銆銆銆 FROM publish)) id 涓簆ublish 琛ㄧ殑鍏抽敭瀛?
銆銆鎴戝綋鏃剁湅鍒拌繖綃囨枃绔犵殑鏃跺欙紝鐪熺殑鏄簿紲炰負涔嬩竴鎸紝瑙夊緱鎬濊礬闈炲父寰楀ソ銆傜瓑鍒板悗鏉ワ紝鎴戝湪浣滃姙鍏嚜鍔ㄥ寲緋葷粺錛圓SP.NET+ C#錛婼QL SERVER錛夌殑鏃跺欙紝蹇界劧鎯寵搗浜嗚繖綃囨枃绔狅紝鎴戞兂濡傛灉鎶婅繖涓鍙ユ敼閫犱竴涓嬶紝榪欏氨鍙兘鏄竴涓潪甯稿ソ鐨勫垎欏靛瓨鍌ㄨ繃紼嬨備簬鏄垜灝辨弧緗戜笂鎵捐繖綃囨枃绔狅紝娌℃兂鍒幫紝鏂囩珷榪樻病鎵懼埌錛屽嵈鎵懼埌浜嗕竴綃囨牴鎹璇彞鍐欑殑涓涓垎欏靛瓨鍌ㄨ繃紼嬶紝榪欎釜瀛樺偍榪囩▼涔熸槸鐩墠杈冧負嫻佽鐨勪竴縐嶅垎欏靛瓨鍌ㄨ繃紼嬶紝鎴戝緢鍚庢倲娌℃湁浜夊厛鎶婅繖孌墊枃瀛楁敼閫犳垚瀛樺偍榪囩▼錛?/p>
CREATE PROCEDURE pagination2
(
@SQL nVARCHAR(4000), --涓嶅甫鎺掑簭璇彞鐨凷QL璇彞
@Page int, --欏電爜
@RecsPerPage int, --姣忛〉瀹圭撼鐨勮褰曟暟
@ID VARCHAR(255), --闇瑕佹帓搴忕殑涓嶉噸澶嶇殑ID鍙?
@Sort VARCHAR(255) --鎺掑簭瀛楁鍙婅鍒?
)
AS
DECLARE @Str nVARCHAR(4000)
SET @Str=''SELECT TOP ''+CAST(@RecsPerPage AS VARCHAR(20))+'' * FROM
(''+@SQL+'') T WHERE T.''+@ID+''NOT IN (SELECT TOP ''+CAST((@RecsPerPage*(@Page-1))
AS VARCHAR(20))+'' ''+@ID+'' FROM (''+@SQL+'') T9 ORDER BY ''+@Sort+'') ORDER BY ''+@Sort
PRINT @Str
EXEC sp_ExecuteSql @Str
GO鍏跺疄錛屼互涓婅鍙ュ彲浠ョ畝鍖栦負錛?/p>
SELECT TOP 欏靛ぇ灝?* FROM Table1 WHERE (ID NOT IN (SELECT TOP 欏靛ぇ灝?欏墊暟 id FROM 琛?ORDER BY id)) ORDER BY ID
浣嗚繖涓瓨鍌ㄨ繃紼嬫湁涓涓嚧鍛界殑緙虹偣錛屽氨鏄畠鍚湁NOT IN瀛楁牱銆傝櫧鐒舵垜鍙互鎶婂畠鏀歸犱負錛?/p>
SELECT TOP 欏靛ぇ灝?* FROM Table1 WHERE not exists (select * from (select top (欏靛ぇ灝?欏墊暟) * from table1 order by id) b where b.id=a.id ) order by id
銆銆鍗籌紝鐢╪ot exists鏉ヤ唬鏇縩ot in錛屼絾鎴戜滑鍓嶉潰宸茬粡璋堣繃浜嗭紝浜岃呯殑鎵ц鏁堢巼瀹為檯涓婃槸娌℃湁鍖哄埆鐨勩傛棦渚垮姝わ紝鐢═OP 緇撳悎NOT IN鐨勮繖涓柟娉曡繕鏄瘮鐢ㄦ父鏍囪鏉ュ緱蹇竴浜涖?
銆銆铏界劧鐢╪ot exists騫朵笉鑳芥尳鏁戜笂涓瓨鍌ㄨ繃紼嬬殑鏁堢巼錛屼絾浣跨敤SQL SERVER涓殑TOP鍏抽敭瀛楀嵈鏄竴涓潪甯告槑鏅虹殑閫夋嫨銆傚洜涓哄垎欏典紭鍖栫殑鏈緇堢洰鐨勫氨鏄伩鍏嶄駭鐢熻繃澶х殑璁板綍闆嗭紝鑰屾垜浠湪鍓嶉潰涔熷凡緇忔彁鍒頒簡TOP鐨勪紭鍔匡紝閫氳繃TOP 鍗沖彲瀹炵幇瀵規暟鎹噺鐨勬帶鍒躲?
銆銆鍦ㄥ垎欏電畻娉曚腑錛屽獎鍝嶆垜浠煡璇㈤熷害鐨勫叧閿洜绱犳湁涓ょ偣錛歍OP鍜孨OT IN銆俆OP鍙互鎻愰珮鎴戜滑鐨勬煡璇㈤熷害錛岃孨OT IN浼氬噺鎱㈡垜浠殑鏌ヨ閫熷害錛屾墍浠ヨ鎻愰珮鎴戜滑鏁翠釜鍒嗛〉綆楁硶鐨勯熷害錛屽氨瑕佸交搴曟敼閫燦OT IN錛屽悓鍏朵粬鏂規硶鏉ユ浛浠e畠銆?
銆銆鎴戜滑鐭ラ亾錛屽嚑涔庝換浣曞瓧孌碉紝鎴戜滑閮藉彲浠ラ氳繃max(瀛楁)鎴杕in(瀛楁)鏉ユ彁鍙栨煇涓瓧孌典腑鐨勬渶澶ф垨鏈灝忓鹼紝鎵浠ュ鏋滆繖涓瓧孌典笉閲嶅錛岄偅涔堝氨鍙互鍒╃敤榪欎簺涓嶉噸澶嶇殑瀛楁鐨刴ax鎴杕in浣滀負鍒嗘按宀紝浣垮叾鎴愪負鍒嗛〉綆楁硶涓垎寮姣忛〉鐨勫弬鐓х墿銆傚湪榪欓噷錛屾垜浠彲浠ョ敤鎿嶄綔絎︹?gt;鈥濇垨鈥?lt;鈥濆彿鏉ュ畬鎴愯繖涓嬌鍛斤紝浣挎煡璇㈣鍙ョ鍚圫ARG褰㈠紡銆傚錛?
Select top 10 * from table1 where id>200
浜庢槸灝辨湁浜嗗涓嬪垎欏墊柟妗堬細
select top 欏靛ぇ灝?* from table1 where id> (select max (id) from (select top ((欏電爜-1)*欏靛ぇ灝? id from table1 order by id) as T ) order by id
銆銆鍦ㄩ夋嫨鍗充笉閲嶅鍊鹼紝鍙堝鏄撳垎杈ㄥぇ灝忕殑鍒楁椂錛屾垜浠氬父浼氶夋嫨涓婚敭銆備笅琛ㄥ垪鍑轟簡絎旇呯敤鏈夌潃1000涓囨暟鎹殑鍔炲叕鑷姩鍖栫郴緇熶腑鐨勮〃錛屽湪浠ID錛圙ID鏄富閿紝浣嗗茍涓嶆槸鑱氶泦绱㈠紩銆傦級涓烘帓搴忓垪銆佹彁鍙杇id,fariqi,title瀛楁錛屽垎鍒互絎?銆?0銆?00銆?00銆?000銆?涓囥?0涓囥?5涓囥?0涓囬〉涓轟緥錛屾祴璇曚互涓婁笁縐嶅垎欏墊柟妗堢殑鎵ц閫熷害錛氾紙鍗曚綅錛氭縐掞級
| 欏電爜 | 鏂規1 | 鏂規2 | 鏂規3 |
| 1 | 60 | 30 | 76 |
| 10 | 46 | 16 | 63 |
| 100 | 1076 | 720 | 130 |
| 500 | 540 | 12943 | 83 |
| 1000 | 17110 | 470 | 250 |
| 10000 | 24796 | 4500 | 140 |
| 100000 | 38326 | 42283 | 1553 |
| 250000 | 28140 | 128720 | 2330 |
| 500000 | 121686 | 127846 | 7168 |
銆銆浠庝笂琛ㄤ腑錛屾垜浠彲浠ョ湅鍑猴紝涓夌瀛樺偍榪囩▼鍦ㄦ墽琛?00欏典互涓嬬殑鍒嗛〉鍛戒護鏃訛紝閮芥槸鍙互淇′換鐨勶紝閫熷害閮藉緢濂姐備絾絎竴縐嶆柟妗堝湪鎵ц鍒嗛〉1000欏典互涓婂悗錛岄熷害灝遍檷浜嗕笅鏉ャ傜浜岀鏂規澶х害鏄湪鎵ц鍒嗛〉1涓囬〉浠ヤ笂鍚庨熷害寮濮嬮檷浜嗕笅鏉ャ傝岀涓夌鏂規鍗村緇堟病鏈夊ぇ鐨勯檷鍔匡紝鍚庡姴浠嶇劧寰堣凍銆?
銆銆鍦ㄧ‘瀹氫簡絎笁縐嶅垎欏墊柟妗堝悗錛屾垜浠彲浠ユ嵁姝ゅ啓涓涓瓨鍌ㄨ繃紼嬨傚ぇ瀹剁煡閬揝QL SERVER鐨勫瓨鍌ㄨ繃紼嬫槸浜嬪厛緙栬瘧濂界殑SQL璇彞錛屽畠鐨勬墽琛屾晥鐜囪姣旈氳繃WEB欏甸潰浼犳潵鐨凷QL璇彞鐨勬墽琛屾晥鐜囪楂樸備笅闈㈢殑瀛樺偍榪囩▼涓嶄粎鍚湁鍒嗛〉鏂規錛岃繕浼氭牴鎹〉闈紶鏉ョ殑鍙傛暟鏉ョ‘瀹氭槸鍚﹁繘琛屾暟鎹繪暟緇熻銆?
--鑾峰彇鎸囧畾欏電殑鏁版嵁錛?
CREATE PROCEDURE pagination3 @tblName varchar(255), -- 琛ㄥ悕 @strGetFields varchar(1000) = ''*'', -- 闇瑕佽繑鍥炵殑鍒? @fldName varchar(255)='''', -- 鎺掑簭鐨勫瓧孌靛悕 @PageSize int = 10, -- 欏靛昂瀵? @PageIndex int = 1, -- 欏電爜 @doCount bit = 0, -- 榪斿洖璁板綍鎬繪暟, 闈?0 鍊煎垯榪斿洖 @OrderType bit = 0, -- 璁劇疆鎺掑簭綾誨瀷, 闈?0 鍊煎垯闄嶅簭 @strWhere varchar(1500) = '''' -- 鏌ヨ鏉′歡 (娉ㄦ剰: 涓嶈鍔?where) AS declare @strSQL varchar(5000) -- 涓昏鍙? declare @strTmp varchar(110) -- 涓存椂鍙橀噺 declare @strOrder varchar(400) -- 鎺掑簭綾誨瀷 if @doCount != 0 begin if @strWhere !='''' set @strSQL = "select count(*) as Total from [" + @tblName + "] where "+@strWhere else set @strSQL = "select count(*) as Total from [" + @tblName + "]" end
--浠ヤ笂浠g爜鐨勬剰鎬濇槸濡傛灉@doCount浼犻掕繃鏉ョ殑涓嶆槸0錛屽氨鎵ц鎬繪暟緇熻銆備互涓嬬殑鎵鏈変唬鐮侀兘鏄疈doCount涓?鐨勬儏鍐碉細
else begin if @OrderType != 0 begin set @strTmp = "<(select min" set @strOrder = " order by [" + @fldName +"] desc"
--濡傛灉@OrderType涓嶆槸0錛屽氨鎵ц闄嶅簭錛岃繖鍙ュ緢閲嶈錛?/p>
end else begin set @strTmp = ">(select max" set @strOrder = " order by [" + @fldName +"] asc" end if @PageIndex = 1 begin if @strWhere != '''' set @strSQL = "select top " + str(@PageSize) +" "+@strGetFields+ " 銆銆銆銆銆銆銆銆from [" + @tblName + "] where " + @strWhere + " " + @strOrder else set @strSQL = "select top " + str(@PageSize) +" "+@strGetFields+ " 銆銆銆銆銆銆銆銆from ["+ @tblName + "] "+ @strOrder
--濡傛灉鏄涓欏靛氨鎵ц浠ヤ笂浠g爜錛岃繖鏍蜂細鍔犲揩鎵ц閫熷害
end else begin
--浠ヤ笅浠g爜璧嬩簣浜咢strSQL浠ョ湡姝f墽琛岀殑SQL浠g爜
銆
set @strSQL = "select top " + str(@PageSize) +" "+@strGetFields+ " from [" + @tblName + "] where [" + @fldName + "]" + @strTmp + "(["+ @fldName + "]) 銆銆銆銆銆銆from (select top " + str((@PageIndex-1)*@PageSize) + " ["+ @fldName + "] 銆銆銆銆銆銆from [" + @tblName + "]" + @strOrder + ") as tblTmp)"+ @strOrder if @strWhere != '''' set @strSQL = "select top " + str(@PageSize) +" "+@strGetFields+ " from [" + @tblName + "] where [" + @fldName + "]" + @strTmp + "([" + @fldName + "]) from (select top " + str((@PageIndex-1)*@PageSize) + " [" + @fldName + "] from [" + @tblName + "] where " + @strWhere + " " + @strOrder + ") as tblTmp) and " + @strWhere + " " + @strOrder end end exec (@strSQL) GO銆銆涓婇潰鐨勮繖涓瓨鍌ㄨ繃紼嬫槸涓涓氱敤鐨勫瓨鍌ㄨ繃紼嬶紝鍏舵敞閲婂凡鍐欏湪鍏朵腑浜嗐?鍦ㄥぇ鏁版嵁閲忕殑鎯呭喌涓嬶紝鐗瑰埆鏄湪鏌ヨ鏈鍚庡嚑欏電殑鏃跺欙紝鏌ヨ鏃墮棿涓鑸笉浼氳秴榪?縐掞紱鑰岀敤鍏朵粬瀛樺偍榪囩▼錛屽湪瀹炶返涓氨浼氬鑷磋秴鏃訛紝鎵浠ヨ繖涓瓨鍌ㄨ繃紼嬮潪甯擱傜敤浜庡ぇ瀹歸噺鏁版嵁搴撶殑鏌ヨ銆?絎旇呭笇鏈涜兘澶熼氳繃瀵逛互涓婂瓨鍌ㄨ繃紼嬬殑瑙f瀽錛岃兘緇欏ぇ瀹跺甫鏉ヤ竴瀹氱殑鍚ず錛屽茍緇欏伐浣滃甫鏉ヤ竴瀹氱殑鏁堢巼鎻愬崌錛屽悓鏃跺笇鏈涘悓琛屾彁鍑烘洿浼樼鐨勫疄鏃舵暟鎹垎欏電畻娉曘?
select * from table1 where name=''zhangsan'' and tID > 10000
鍜屾墽琛?
select * from table1 where tID > 10000 and name=''zhangsan''
銆銆涓浜涗漢涓嶇煡閬撲互涓婁袱鏉¤鍙ョ殑鎵ц鏁堢巼鏄惁涓鏍鳳紝鍥犱負濡傛灉綆鍗曠殑浠庤鍙ュ厛鍚庝笂鐪嬶紝榪欎袱涓鍙ョ殑紜槸涓嶄竴鏍鳳紝濡傛灉tID鏄竴涓仛鍚堢儲寮曪紝閭d箞鍚庝竴鍙ヤ粎浠呬粠琛ㄧ殑10000鏉′互鍚庣殑璁板綍涓煡鎵懼氨琛屼簡錛涜屽墠涓鍙ュ垯瑕佸厛浠庡叏琛ㄤ腑鏌ユ壘鐪嬫湁鍑犱釜name=''zhangsan''鐨勶紝鑰屽悗鍐嶆牴鎹檺鍒舵潯浠舵潯浠秚ID>10000鏉ユ彁鍑烘煡璇㈢粨鏋溿?
銆銆浜嬪疄涓婏紝榪欐牱鐨勬媴蹇冩槸涓嶅繀瑕佺殑銆係QL SERVER涓湁涓涓滄煡璇㈠垎鏋愪紭鍖栧櫒鈥濓紝瀹冨彲浠ヨ綆楀嚭where瀛愬彞涓殑鎼滅儲鏉′歡騫剁‘瀹氬摢涓儲寮曡兘緙╁皬琛ㄦ壂鎻忕殑鎼滅儲絀洪棿錛屼篃灝辨槸璇達紝瀹冭兘瀹炵幇鑷姩浼樺寲銆?
銆銆铏界劧鏌ヨ浼樺寲鍣ㄥ彲浠ユ牴鎹畐here瀛愬彞鑷姩鐨勮繘琛屾煡璇紭鍖栵紝浣嗗ぇ瀹朵粛鐒舵湁蹇呰浜嗚В涓涓嬧滄煡璇紭鍖栧櫒鈥濈殑宸ヤ綔鍘熺悊錛屽闈炶繖鏍鳳紝鏈夋椂鏌ヨ浼樺寲鍣ㄥ氨浼氫笉鎸夌収鎮ㄧ殑鏈剰榪涜蹇熸煡璇€?
銆銆鍦ㄦ煡璇㈠垎鏋愰樁孌碉紝鏌ヨ浼樺寲鍣ㄦ煡鐪嬫煡璇㈢殑姣忎釜闃舵騫跺喅瀹氶檺鍒墮渶瑕佹壂鎻忕殑鏁版嵁閲忔槸鍚︽湁鐢ㄣ傚鏋滀竴涓樁孌靛彲浠ヨ鐢ㄤ綔涓涓壂鎻忓弬鏁幫紙SARG錛夛紝閭d箞灝辯О涔嬩負鍙紭鍖栫殑錛屽茍涓斿彲浠ュ埄鐢ㄧ儲寮曞揩閫熻幏寰楁墍闇鏁版嵁銆?
銆銆SARG鐨勫畾涔夛細鐢ㄤ簬闄愬埗鎼滅儲鐨勪竴涓搷浣滐紝鍥犱負瀹冮氬父鏄寚涓涓壒瀹氱殑鍖歸厤錛屼竴涓煎緱鑼冨洿鍐呯殑鍖歸厤鎴栬呬袱涓互涓婃潯浠剁殑AND榪炴帴銆傚艦寮忓涓嬶細
鍒楀悕 鎿嶄綔絎?<甯告暟 鎴?鍙橀噺> 鎴? <甯告暟 鎴?鍙橀噺> 鎿嶄綔絎﹀垪鍚?/pre>鍒楀悕鍙互鍑虹幇鍦ㄦ搷浣滅鐨勪竴杈癸紝鑰屽父鏁版垨鍙橀噺鍑虹幇鍦ㄦ搷浣滅鐨勫彟涓杈廣傚錛?/p>
Name=鈥欏紶涓夆? 浠鋒牸>5000 5000<浠鋒牸 Name=鈥欏紶涓夆?and 浠鋒牸>5000銆銆濡傛灉涓涓〃杈懼紡涓嶈兘婊¤凍SARG鐨勫艦寮忥紝閭e畠灝辨棤娉曢檺鍒舵悳绱㈢殑鑼冨洿浜嗭紝涔熷氨鏄疭QL SERVER蹇呴』瀵規瘡涓琛岄兘鍒ゆ柇瀹冩槸鍚︽弧瓚砏HERE瀛愬彞涓殑鎵鏈夋潯浠躲傛墍浠ヤ竴涓儲寮曞浜庝笉婊¤凍SARG褰㈠紡鐨勮〃杈懼紡鏉ヨ鏄棤鐢ㄧ殑銆?
銆銆浠嬬粛瀹孲ARG鍚庯紝鎴戜滑鏉ユ葷粨涓涓嬩嬌鐢⊿ARG浠ュ強鍦ㄥ疄璺典腑閬囧埌鐨勫拰鏌愪簺璧勬枡涓婄粨璁轟笉鍚岀殑緇忛獙錛?
1銆丩ike璇彞鏄惁灞炰簬SARG鍙栧喅浜庢墍浣跨敤鐨勯氶厤絎︾殑綾誨瀷濡傦細name like 鈥樺紶%鈥?錛岃繖灝卞睘浜嶴ARG 鑰岋細name like 鈥?寮犫?,灝變笉灞炰簬SARG銆?/pre>鍘熷洜鏄氶厤絎?鍦ㄥ瓧絎︿覆鐨勫紑閫氫嬌寰楃儲寮曟棤娉曚嬌鐢ㄣ?
2銆乷r 浼氬紩璧峰叏琛ㄦ壂鎻?
銆銆Name=鈥欏紶涓夆?and 浠鋒牸>5000 絎﹀彿SARG錛岃岋細Name=鈥欏紶涓夆?or 浠鋒牸>5000 鍒欎笉絎﹀悎SARG銆備嬌鐢╫r浼氬紩璧峰叏琛ㄦ壂鎻忋?
3銆侀潪鎿嶄綔絎︺佸嚱鏁板紩璧風殑涓嶆弧瓚砈ARG褰㈠紡鐨勮鍙?
銆銆涓嶆弧瓚砈ARG褰㈠紡鐨勮鍙ユ渶鍏稿瀷鐨勬儏鍐靛氨鏄寘鎷潪鎿嶄綔絎︾殑璇彞錛屽錛歂OT銆?=銆?lt;>銆?<銆?>銆丯OT EXISTS銆丯OT IN銆丯OT LIKE絳夛紝鍙﹀榪樻湁鍑芥暟銆備笅闈㈠氨鏄嚑涓笉婊¤凍SARG褰㈠紡鐨勪緥瀛愶細ABS(浠鋒牸)<5000 Name like 鈥?涓夆? 鏈変簺琛ㄨ揪寮忥紝濡傦細 WHERE 浠鋒牸*2>5000 SQL SERVER涔熶細璁や負鏄疭ARG錛孲QL SERVER浼氬皢姝ゅ紡杞寲涓猴細 WHERE 浠鋒牸>2500/2浣嗘垜浠笉鎺ㄨ崘榪欐牱浣跨敤錛屽洜涓烘湁鏃禨QL SERVER涓嶈兘淇濊瘉榪欑杞寲涓庡師濮嬭〃杈懼紡鏄畬鍏ㄧ瓑浠風殑銆?
4銆両N 鐨勪綔鐢ㄧ浉褰撲笌OR
璇彞錛?Select * from table1 where tid in (2,3) 鍜? Select * from table1 where tid=2 or tid=3鏄竴鏍風殑錛岄兘浼氬紩璧峰叏琛ㄦ壂鎻忥紝濡傛灉tid涓婃湁绱㈠紩錛屽叾绱㈠紩涔熶細澶辨晥銆?
5銆佸敖閲忓皯鐢∟OT
6銆乪xists 鍜?in 鐨勬墽琛屾晥鐜囨槸涓鏍風殑
銆銆寰堝璧勬枡涓婇兘鏄劇ず璇達紝exists瑕佹瘮in鐨勬墽琛屾晥鐜囪楂橈紝鍚屾椂搴斿敖鍙兘鐨勭敤not exists鏉ヤ唬鏇縩ot in銆備絾浜嬪疄涓婏紝鎴戣瘯楠屼簡涓涓嬶紝鍙戠幇浜岃呮棤璁烘槸鍓嶉潰甯︿笉甯ot錛屼簩鑰呬箣闂寸殑鎵ц鏁堢巼閮芥槸涓鏍風殑銆傚洜涓烘秹鍙婂瓙鏌ヨ錛屾垜浠瘯楠岃繖嬈$敤SQL SERVER鑷甫鐨刾ubs鏁版嵁搴撱傝繍琛屽墠鎴戜滑鍙互鎶奡QL SERVER鐨剆tatistics I/O鐘舵佹墦寮錛?錛?錛塻elect title,price from titles where title_id in (select title_id from sales where qty>30)璇ュ彞鐨勬墽琛岀粨鏋滀負錛?
琛?''sales''銆傛壂鎻忚鏁?18錛岄昏緫璇?56 嬈★紝鐗╃悊璇?0 嬈★紝棰勮 0 嬈°?
琛?''titles''銆傛壂鎻忚鏁?1錛岄昏緫璇?2 嬈★紝鐗╃悊璇?0 嬈★紝棰勮 0 嬈°?錛?錛塻elect title,price from titles 銆銆銆銆銆銆銆where exists (select * from sales 銆銆銆銆銆銆銆where sales.title_id=titles.title_id and qty>30)絎簩鍙ョ殑鎵ц緇撴灉涓猴細
琛?''sales''銆傛壂鎻忚鏁?18錛岄昏緫璇?56 嬈★紝鐗╃悊璇?0 嬈★紝棰勮 0 嬈°?
琛?''titles''銆傛壂鎻忚鏁?1錛岄昏緫璇?2 嬈★紝鐗╃悊璇?0 嬈★紝棰勮 0 嬈°?
鎴戜滑浠庢鍙互鐪嬪埌鐢╡xists鍜岀敤in鐨勬墽琛屾晥鐜囨槸涓鏍風殑銆?
7銆佺敤鍑芥暟charindex()鍜屽墠闈㈠姞閫氶厤絎?鐨凩IKE鎵ц鏁堢巼涓鏍?
銆銆鍓嶉潰錛屾垜浠皥鍒幫紝濡傛灉鍦↙IKE鍓嶉潰鍔犱笂閫氶厤絎?錛岄偅涔堝皢浼氬紩璧峰叏琛ㄦ壂鎻忥紝鎵浠ュ叾鎵ц鏁堢巼鏄綆涓嬬殑銆備絾鏈夌殑璧勬枡浠嬬粛璇達紝鐢ㄥ嚱鏁癱harindex()鏉ヤ唬鏇縇IKE閫熷害浼氭湁澶х殑鎻愬崌錛岀粡鎴戣瘯楠岋紝鍙戠幇榪欑璇存槑涔熸槸閿欒鐨勶細
銆select gid,title,fariqi,reader from tgongwen 銆銆銆銆銆銆銆銆銆where charindex(''鍒戜睛鏀槦'',reader)>0 and fariqi>''2004-5-5''鐢ㄦ椂錛?縐掞紝鍙﹀錛氭壂鎻忚鏁?4錛岄昏緫璇?7155 嬈★紝鐗╃悊璇?0 嬈★紝棰勮 0 嬈°?/p>
select gid,title,fariqi,reader from tgongwen 銆銆銆銆銆銆銆銆銆where reader like ''%'' + ''鍒戜睛鏀槦'' + ''%'' and fariqi>''2004-5-5''鐢ㄦ椂錛?縐掞紝鍙﹀錛氭壂鎻忚鏁?4錛岄昏緫璇?7155 嬈★紝鐗╃悊璇?0 嬈★紝棰勮 0 嬈°?
8銆乽nion騫朵笉緇濆姣攐r鐨勬墽琛屾晥鐜囬珮
銆銆鎴戜滑鍓嶉潰宸茬粡璋堝埌浜嗗湪where瀛愬彞涓嬌鐢╫r浼氬紩璧峰叏琛ㄦ壂鎻忥紝涓鑸殑錛屾垜鎵瑙佽繃鐨勮祫鏂欓兘鏄帹鑽愯繖閲岀敤union鏉ヤ唬鏇縪r銆備簨瀹炶瘉鏄庯紝榪欑璇存硶瀵逛簬澶ч儴鍒嗛兘鏄傜敤鐨勩?select gid,fariqi,neibuyonghu,reader,title from Tgongwen 銆銆銆銆銆銆銆銆銆銆where fariqi=''2004-9-16'' or gid>9990000鐢ㄦ椂錛?8縐掋傛壂鎻忚鏁?1錛岄昏緫璇?404008 嬈★紝鐗╃悊璇?283 嬈★紝棰勮 392163 嬈°?/p>
select gid,fariqi,neibuyonghu,reader,title from Tgongwen where fariqi=''2004-9-16'' union select gid,fariqi,neibuyonghu,reader,title from Tgongwen where gid>9990000鐢ㄦ椂錛?縐掋傛壂鎻忚鏁?8錛岄昏緫璇?67489 嬈★紝鐗╃悊璇?216 嬈★紝棰勮 7499 嬈°?
鐪嬫潵錛岀敤union鍦ㄩ氬父鎯呭喌涓嬫瘮鐢╫r鐨勬晥鐜囪楂樼殑澶氥?
銆銆浣嗙粡榪囪瘯楠岋紝絎旇呭彂鐜板鏋渙r涓よ竟鐨勬煡璇㈠垪鏄竴鏍風殑璇濓紝閭d箞鐢╱nion鍒欏弽鍊掑拰鐢╫r鐨勬墽琛岄熷害宸緢澶氾紝铏界劧榪欓噷union鎵弿鐨勬槸绱㈠紩錛岃宱r鎵弿鐨勬槸鍏ㄨ〃銆?
銆select gid,fariqi,neibuyonghu,reader,title from Tgongwen 銆銆銆銆銆銆銆銆銆銆where fariqi=''2004-9-16'' or fariqi=''2004-2-5''鐢ㄦ椂錛?423姣銆傛壂鎻忚鏁?2錛岄昏緫璇?14726 嬈★紝鐗╃悊璇?1 嬈★紝棰勮 7176 嬈°?/p>
select gid,fariqi,neibuyonghu,reader,title from Tgongwen where fariqi=''2004-9-16'' union select gid,fariqi,neibuyonghu,reader,title from Tgongwen where fariqi=''2004-2-5''鐢ㄦ椂錛?1640姣銆傛壂鎻忚鏁?8錛岄昏緫璇?14806 嬈★紝鐗╃悊璇?108 嬈★紝棰勮 1144 嬈°?
9銆佸瓧孌墊彁鍙栬鎸夌収鈥滈渶澶氬皯銆佹彁澶氬皯鈥濈殑鍘熷垯錛岄伩鍏嶁渟elect *鈥?
銆銆鎴戜滑鏉ュ仛涓涓瘯楠岋細select top 10000 gid,fariqi,reader,title from tgongwen order by gid desc鐢ㄦ椂錛?673姣
select top 10000 gid,fariqi,title from tgongwen order by gid desc鐢ㄦ椂錛?376姣
select top 10000 gid,fariqi from tgongwen order by gid desc鐢ㄦ椂錛?0姣
銆銆鐢辨鐪嬫潵錛屾垜浠瘡灝戞彁鍙栦竴涓瓧孌碉紝鏁版嵁鐨勬彁鍙栭熷害灝變細鏈夌浉搴旂殑鎻愬崌銆傛彁鍗囩殑閫熷害榪樿鐪嬫偍鑸嶅純鐨勫瓧孌電殑澶у皬鏉ュ垽鏂?
10銆乧ount(*)涓嶆瘮count(瀛楁)鎱?
銆銆鏌愪簺璧勬枡涓婅錛氱敤*浼氱粺璁℃墍鏈夊垪錛屾樉鐒惰姣斾竴涓笘鐣岀殑鍒楀悕鏁堢巼浣庛傝繖縐嶈娉曞叾瀹炴槸娌℃湁鏍規嵁鐨勩傛垜浠潵鐪嬶細select count(*) from Tgongwen鐢ㄦ椂錛?500姣
select count(gid) from Tgongwen鐢ㄦ椂錛?483姣
select count(fariqi) from Tgongwen鐢ㄦ椂錛?140姣
select count(title) from Tgongwen鐢ㄦ椂錛?2050姣
銆銆浠庝互涓婂彲浠ョ湅鍑猴紝濡傛灉鐢╟ount(*)鍜岀敤count(涓婚敭)鐨勯熷害鏄浉褰撶殑錛岃宑ount(*)鍗存瘮鍏朵粬浠諱綍闄や富閿互澶栫殑瀛楁姹囨婚熷害瑕佸揩錛岃屼笖瀛楁瓚婇暱錛屾眹鎬葷殑閫熷害灝辮秺鎱€傛垜鎯籌紝濡傛灉鐢╟ount(*)錛?SQL SERVER鍙兘浼氳嚜鍔ㄦ煡鎵炬渶灝忓瓧孌墊潵姹囨葷殑銆傚綋鐒訛紝濡傛灉鎮ㄧ洿鎺ュ啓count(涓婚敭)灝嗕細鏉ョ殑鏇寸洿鎺ヤ簺銆?
11銆乷rder by鎸夎仛闆嗙儲寮曞垪鎺掑簭鏁堢巼鏈楂?
銆銆鎴戜滑鏉ョ湅錛氾紙gid鏄富閿紝fariqi鏄仛鍚堢儲寮曞垪錛夛細select top 10000 gid,fariqi,reader,title from tgongwen鐢ㄦ椂錛?96 姣銆?鎵弿璁℃暟 1錛岄昏緫璇?289 嬈★紝鐗╃悊璇?1 嬈★紝棰勮 1527 嬈°?/p>
select top 10000 gid,fariqi,reader,title from tgongwen order by gid asc鐢ㄦ椂錛?720姣銆?鎵弿璁℃暟 1錛岄昏緫璇?41956 嬈★紝鐗╃悊璇?0 嬈★紝棰勮 1287 嬈°?/p>
select top 10000 gid,fariqi,reader,title from tgongwen order by gid desc鐢ㄦ椂錛?736姣銆?鎵弿璁℃暟 1錛岄昏緫璇?55350 嬈★紝鐗╃悊璇?10 嬈★紝棰勮 775 嬈°?/p>
select top 10000 gid,fariqi,reader,title from tgongwen order by fariqi asc鐢ㄦ椂錛?73姣銆?鎵弿璁℃暟 1錛岄昏緫璇?290 嬈★紝鐗╃悊璇?0 嬈★紝棰勮 0 嬈°?/p>
select top 10000 gid,fariqi,reader,title from tgongwen order by fariqi desc鐢ㄦ椂錛?56姣銆?鎵弿璁℃暟 1錛岄昏緫璇?289 嬈★紝鐗╃悊璇?0 嬈★紝棰勮 0 嬈°?
銆銆浠庝互涓婃垜浠彲浠ョ湅鍑猴紝涓嶆帓搴忕殑閫熷害浠ュ強閫昏緫璇繪鏁伴兘鏄拰鈥渙rder by 鑱氶泦绱㈠紩鍒椻?鐨勯熷害鏄浉褰撶殑錛屼絾榪欎簺閮芥瘮鈥渙rder by 闈炶仛闆嗙儲寮曞垪鈥濈殑鏌ヨ閫熷害鏄揩寰楀鐨勩?
銆銆鍚屾椂錛屾寜鐓ф煇涓瓧孌佃繘琛屾帓搴忕殑鏃跺欙紝鏃犺鏄搴忚繕鏄掑簭錛岄熷害鏄熀鏈浉褰撶殑銆?
12銆侀珮鏁堢殑TOP
銆銆浜嬪疄涓婏紝鍦ㄦ煡璇㈠拰鎻愬彇瓚呭ぇ瀹歸噺鐨勬暟鎹泦鏃訛紝褰卞搷鏁版嵁搴撳搷搴旀椂闂寸殑鏈澶у洜绱犱笉鏄暟鎹煡鎵撅紝鑰屾槸鐗╃悊鐨処/0鎿嶄綔銆傚錛?select top 10 * from ( select top 10000 gid,fariqi,title from tgongwen where neibuyonghu=''鍔炲叕瀹?' order by gid desc) as a order by gid asc銆銆榪欐潯璇彞錛屼粠鐞嗚涓婅錛屾暣鏉¤鍙ョ殑鎵ц鏃墮棿搴旇姣斿瓙鍙ョ殑鎵ц鏃墮棿闀匡紝浣嗕簨瀹炵浉鍙嶃傚洜涓猴紝瀛愬彞鎵ц鍚庤繑鍥炵殑鏄?0000鏉¤褰曪紝鑰屾暣鏉¤鍙ヤ粎榪斿洖10鏉¤鍙ワ紝鎵浠ュ獎鍝嶆暟鎹簱鍝嶅簲鏃墮棿鏈澶х殑鍥犵礌鏄墿鐞咺/O鎿嶄綔銆傝岄檺鍒剁墿鐞咺/O鎿嶄綔姝ゅ鐨勬渶鏈夋晥鏂規硶涔嬩竴灝辨槸浣跨敤TOP鍏抽敭璇嶄簡銆俆OP鍏抽敭璇嶆槸SQL SERVER涓粡榪囩郴緇熶紭鍖栬繃鐨勪竴涓敤鏉ユ彁鍙栧墠鍑犳潯鎴栧墠鍑犱釜鐧懼垎姣旀暟鎹殑璇嶃傜粡絎旇呭湪瀹炶返涓殑搴旂敤錛屽彂鐜癟OP紜疄寰堝ソ鐢紝鏁堢巼涔熷緢楂樸備絾榪欎釜璇嶅湪鍙﹀涓涓ぇ鍨嬫暟鎹簱ORACLE涓嵈娌℃湁錛岃繖涓嶈兘璇翠笉鏄竴涓仐鎲撅紝铏界劧鍦∣RACLE涓彲浠ョ敤鍏朵粬鏂規硶錛堝錛歳ownumber錛夋潵瑙e喅銆傚湪浠ュ悗鐨勫叧浜庘滃疄鐜板崈涓囩駭鏁版嵁鐨勫垎欏墊樉紺哄瓨鍌ㄨ繃紼嬧濈殑璁ㄨ涓紝鎴戜滑灝卞皢鐢ㄥ埌TOP榪欎釜鍏抽敭璇嶃?
銆銆鍒版涓烘錛屾垜浠笂闈㈣璁轟簡濡備綍瀹炵幇浠庡ぇ瀹歸噺鐨勬暟鎹簱涓揩閫熷湴鏌ヨ鍑烘偍鎵闇瑕佺殑鏁版嵁鏂規硶銆傚綋鐒訛紝鎴戜滑浠嬬粛鐨勮繖浜涙柟娉曢兘鏄滆蔣鈥濇柟娉曪紝鍦ㄥ疄璺典腑錛屾垜浠繕瑕佽冭檻鍚勭鈥滅‖鈥濆洜绱狅紝濡傦細緗戠粶鎬ц兘銆佹湇鍔″櫒鐨勬ц兘銆佹搷浣滅郴緇熺殑鎬ц兘錛岀敋鑷崇綉鍗°佷氦鎹㈡満絳夈?
鏂囩珷寮曡嚜錛?a >http://www.vckbase.com/document/viewdoc/?id=1308
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| 鍔ㄤ綔鎻忚堪 | 浣跨敤鑱氶泦绱㈠紩 | 浣跨敤闈炶仛闆嗙儲寮?/td> |
| 鍒楃粡甯歌鍒嗙粍鎺掑簭 | 搴?/td> | 搴?/td> |
| 榪斿洖鏌愯寖鍥村唴鐨勬暟鎹?/td> | 搴?/td> | 涓嶅簲 |
| 涓涓垨鏋佸皯涓嶅悓鍊?/td> | 涓嶅簲 | 涓嶅簲 |
| 灝忔暟鐩殑涓嶅悓鍊?/td> | 搴?/td> | 涓嶅簲 |
| 澶ф暟鐩殑涓嶅悓鍊?/td> | 涓嶅簲 | 搴?/td> |
| 棰戠箒鏇存柊鐨勫垪 | 涓嶅簲 | 搴?/td> |
| 澶栭敭鍒?/td> | 搴?/td> | 搴?/td> |
| 涓婚敭鍒?/td> | 搴?/td> | 搴?/td> |
| 棰戠箒淇敼绱㈠紩鍒?/td> | 涓嶅簲 | 搴?/td> |
銆銆浜嬪疄涓婏紝鎴戜滑鍙互閫氳繃鍓嶉潰鑱氶泦绱㈠紩鍜岄潪鑱氶泦绱㈠紩鐨勫畾涔夌殑渚嬪瓙鏉ョ悊瑙d笂琛ㄣ傚錛氳繑鍥炴煇鑼冨洿鍐呯殑鏁版嵁涓欏廣傛瘮濡傛偍鐨勬煇涓〃鏈変竴涓椂闂村垪錛屾伆濂芥偍鎶婅仛鍚堢儲寮曞緩绔嬪湪浜嗚鍒楋紝榪欐椂鎮ㄦ煡璇?004騫?鏈?鏃ヨ嚦2004騫?0鏈?鏃ヤ箣闂寸殑鍏ㄩ儴鏁版嵁鏃訛紝榪欎釜閫熷害灝卞皢鏄緢蹇殑錛屽洜涓烘偍鐨勮繖鏈瓧鍏告鏂囨槸鎸夋棩鏈熻繘琛屾帓搴忕殑錛岃仛綾葷儲寮曞彧闇瑕佹壘鍒拌媯绱㈢殑鎵鏈夋暟鎹腑鐨勫紑澶村拰緇撳熬鏁版嵁鍗沖彲錛涜屼笉鍍忛潪鑱氶泦绱㈠紩錛屽繀欏誨厛鏌ュ埌鐩綍涓煡鍒版瘡涓欏規暟鎹搴旂殑欏電爜錛岀劧鍚庡啀鏍規嵁欏電爜鏌ュ埌鍏蜂綋鍐呭銆?
涓夈佺粨鍚堝疄闄咃紝璋堢儲寮曚嬌鐢ㄧ殑璇尯
銆銆鐞嗚鐨勭洰鐨勬槸搴旂敤銆傝櫧鐒舵垜浠垰鎵嶅垪鍑轟簡浣曟椂搴斾嬌鐢ㄨ仛闆嗙儲寮曟垨闈炶仛闆嗙儲寮曪紝浣嗗湪瀹炶返涓互涓婅鍒欏嵈寰堝鏄撹蹇借鎴栦笉鑳芥牴鎹疄闄呮儏鍐佃繘琛岀患鍚堝垎鏋愩備笅闈㈡垜浠皢鏍規嵁鍦ㄥ疄璺典腑閬囧埌鐨勫疄闄呴棶棰樻潵璋堜竴涓嬬儲寮曚嬌鐢ㄧ殑璇尯錛屼互渚夸簬澶у鎺屾彙绱㈠紩寤虹珛鐨勬柟娉曘?
1銆佷富閿氨鏄仛闆嗙儲寮?
銆銆榪欑鎯蟲硶絎旇呰涓烘槸鏋佺閿欒鐨勶紝鏄鑱氶泦绱㈠紩鐨勪竴縐嶆氮璐廣傝櫧鐒禨QL SERVER榛樿鏄湪涓婚敭涓婂緩绔嬭仛闆嗙儲寮曠殑銆?
銆銆閫氬父錛屾垜浠細鍦ㄦ瘡涓〃涓兘寤虹珛涓涓狪D鍒楋紝浠ュ尯鍒嗘瘡鏉℃暟鎹紝騫朵笖榪欎釜ID鍒楁槸鑷姩澧炲ぇ鐨勶紝姝ラ暱涓鑸負1銆傛垜浠殑榪欎釜鍔炲叕鑷姩鍖栫殑瀹炰緥涓殑鍒桮id灝辨槸濡傛銆傛鏃訛紝濡傛灉鎴戜滑灝嗚繖涓垪璁句負涓婚敭錛孲QL SERVER浼氬皢姝ゅ垪榛樿涓鴻仛闆嗙儲寮曘傝繖鏍峰仛鏈夊ソ澶勶紝灝辨槸鍙互璁╂偍鐨勬暟鎹湪鏁版嵁搴撲腑鎸夌収ID榪涜鐗╃悊鎺掑簭錛屼絾絎旇呰涓鴻繖鏍峰仛鎰忎箟涓嶅ぇ銆?
銆銆鏄捐屾槗瑙侊紝鑱氶泦绱㈠紩鐨勪紭鍔挎槸寰堟槑鏄劇殑錛岃屾瘡涓〃涓彧鑳芥湁涓涓仛闆嗙儲寮曠殑瑙勫垯錛岃繖浣垮緱鑱氶泦绱㈠紩鍙樺緱鏇村姞鐝嶈吹銆?
銆銆浠庢垜浠墠闈㈣皥鍒扮殑鑱氶泦绱㈠紩鐨勫畾涔夋垜浠彲浠ョ湅鍑猴紝浣跨敤鑱氶泦绱㈠紩鐨勬渶澶уソ澶勫氨鏄兘澶熸牴鎹煡璇㈣姹傦紝榪呴熺緝灝忔煡璇㈣寖鍥達紝閬垮厤鍏ㄨ〃鎵弿銆傚湪瀹為檯搴旂敤涓紝鍥犱負ID鍙鋒槸鑷姩鐢熸垚鐨勶紝鎴戜滑騫朵笉鐭ラ亾姣忔潯璁板綍鐨処D鍙鳳紝鎵浠ユ垜浠緢闅懼湪瀹炶返涓敤ID鍙鋒潵榪涜鏌ヨ銆傝繖灝變嬌璁㊣D鍙瘋繖涓富閿綔涓鴻仛闆嗙儲寮曟垚涓轟竴縐嶈祫婧愭氮璐廣傚叾嬈★紝璁╂瘡涓狪D鍙烽兘涓嶅悓鐨勫瓧孌典綔涓鴻仛闆嗙儲寮曚篃涓嶇鍚堚滃ぇ鏁扮洰鐨勪笉鍚屽兼儏鍐典笅涓嶅簲寤虹珛鑱氬悎绱㈠紩鈥濊鍒欙紱褰撶劧錛岃繖縐嶆儏鍐靛彧鏄拡瀵圭敤鎴風粡甯鎬慨鏀硅褰曞唴瀹癸紝鐗瑰埆鏄儲寮曢」鐨勬椂鍊欎細璐熶綔鐢紝浣嗗浜庢煡璇㈤熷害騫舵病鏈夊獎鍝嶃?
銆銆鍦ㄥ姙鍏嚜鍔ㄥ寲緋葷粺涓紝鏃犺鏄郴緇熼欏墊樉紺虹殑闇瑕佺敤鎴風鏀剁殑鏂囦歡銆佷細璁繕鏄敤鎴瘋繘琛屾枃浠舵煡璇㈢瓑浠諱綍鎯呭喌涓嬭繘琛屾暟鎹煡璇㈤兘紱諱笉寮瀛楁鐨勬槸鈥滄棩鏈熲濊繕鏈夌敤鎴鋒湰韜殑鈥滅敤鎴峰悕鈥濄?
銆銆閫氬父錛屽姙鍏嚜鍔ㄥ寲鐨勯欏典細鏄劇ず姣忎釜鐢ㄦ埛灝氭湭絳炬敹鐨勬枃浠舵垨浼氳銆傝櫧鐒舵垜浠殑where璇彞鍙互浠呬粎闄愬埗褰撳墠鐢ㄦ埛灝氭湭絳炬敹鐨勬儏鍐碉紝浣嗗鏋滄偍鐨勭郴緇熷凡寤虹珛浜嗗緢闀挎椂闂達紝騫朵笖鏁版嵁閲忓緢澶э紝閭d箞錛屾瘡嬈℃瘡涓敤鎴鋒墦寮棣栭〉鐨勬椂鍊欓兘榪涜涓嬈″叏琛ㄦ壂鎻忥紝榪欐牱鍋氭剰涔夋槸涓嶅ぇ鐨勶紝緇濆ぇ澶氭暟鐨勭敤鎴?涓湀鍓嶇殑鏂囦歡閮藉凡緇忔祻瑙堣繃浜嗭紝榪欐牱鍋氬彧鑳藉緬澧炴暟鎹簱鐨勫紑閿鑰屽凡銆備簨瀹炰笂錛屾垜浠畬鍏ㄥ彲浠ヨ鐢ㄦ埛鎵撳紑緋葷粺棣栭〉鏃訛紝鏁版嵁搴撲粎浠呮煡璇㈣繖涓敤鎴瘋繎3涓湀鏉ユ湭闃呰鐨勬枃浠訛紝閫氳繃鈥滄棩鏈熲濊繖涓瓧孌墊潵闄愬埗琛ㄦ壂鎻忥紝鎻愰珮鏌ヨ閫熷害銆傚鏋滄偍鐨勫姙鍏嚜鍔ㄥ寲緋葷粺宸茬粡寤虹珛鐨?騫達紝閭d箞鎮ㄧ殑棣栭〉鏄劇ず閫熷害鐞嗚涓婂皢鏄師鏉ラ熷害8鍊嶏紝鐢氳嚦鏇村揩銆?
銆銆鍦ㄨ繖閲屼箣鎵浠ユ彁鍒扳滅悊璁轟笂鈥濅笁瀛楋紝鏄洜涓哄鏋滄偍鐨勮仛闆嗙儲寮曡繕鏄洸鐩湴寤哄湪ID榪欎釜涓婚敭涓婃椂錛屾偍鐨勬煡璇㈤熷害鏄病鏈夎繖涔堥珮鐨勶紝鍗充嬌鎮ㄥ湪鈥滄棩鏈熲濊繖涓瓧孌典笂寤虹珛鐨勭儲寮曪紙闈炶仛鍚堢儲寮曪級銆備笅闈㈡垜浠氨鏉ョ湅涓涓嬪湪1000涓囨潯鏁版嵁閲忕殑鎯呭喌涓嬪悇縐嶆煡璇㈢殑閫熷害琛ㄧ幇錛?涓湀鍐呯殑鏁版嵁涓?5涓囨潯錛夛細
錛?錛変粎鍦ㄤ富閿笂寤虹珛鑱氶泦绱㈠紩錛屽茍涓斾笉鍒掑垎鏃墮棿孌碉細
Select gid,fariqi,neibuyonghu,title from tgongwen
鐢ㄦ椂錛?28470姣錛堝嵆錛?28縐掞級
錛?錛夊湪涓婚敭涓婂緩绔嬭仛闆嗙儲寮曪紝鍦╢ariq涓婂緩绔嬮潪鑱氶泦绱㈠紩錛?
select gid,fariqi,neibuyonghu,title from Tgongwen where fariqi> dateadd(day,-90,getdate())
鐢ㄦ椂錛?3763姣錛?4縐掞級
錛?錛夊皢鑱氬悎绱㈠紩寤虹珛鍦ㄦ棩鏈熷垪錛坒ariqi錛変笂錛?
select gid,fariqi,neibuyonghu,title from Tgongwen where fariqi> dateadd(day,-90,getdate())
鐢ㄦ椂錛?423姣錛?縐掞級
銆銆铏界劧姣忔潯璇彞鎻愬彇鍑烘潵鐨勯兘鏄?5涓囨潯鏁版嵁錛屽悇縐嶆儏鍐電殑宸紓鍗存槸宸ㄥぇ鐨勶紝鐗瑰埆鏄皢鑱氶泦绱㈠紩寤虹珛鍦ㄦ棩鏈熷垪鏃剁殑宸紓銆備簨瀹炰笂錛屽鏋滄偍鐨勬暟鎹簱鐪熺殑鏈?000涓囧閲忕殑璇濓紝鎶婁富閿緩绔嬪湪ID鍒椾笂錛屽氨鍍忎互涓婄殑絎?銆?縐嶆儏鍐碉紝鍦ㄧ綉欏典笂鐨勮〃鐜板氨鏄秴鏃訛紝鏍規湰灝辨棤娉曟樉紺恒傝繖涔熸槸鎴戞憭寮僆D鍒椾綔涓鴻仛闆嗙儲寮曠殑涓涓渶閲嶈鐨勫洜绱犮傚緱鍑轟互涓婇熷害鐨勬柟娉曟槸錛氬湪鍚勪釜select璇彞鍓嶅姞錛?
declare @d datetime set @d=getdate()
騫跺湪select璇彞鍚庡姞錛?/p>
select [璇彞鎵ц鑺辮垂鏃墮棿(姣)]=datediff(ms,@d,getdate())
2銆佸彧瑕佸緩绔嬬儲寮曞氨鑳芥樉钁楁彁楂樻煡璇㈤熷害
銆銆浜嬪疄涓婏紝鎴戜滑鍙互鍙戠幇涓婇潰鐨勪緥瀛愪腑錛岀2銆?鏉¤鍙ュ畬鍏ㄧ浉鍚岋紝涓斿緩绔嬬儲寮曠殑瀛楁涔熺浉鍚岋紱涓嶅悓鐨勪粎鏄墠鑰呭湪fariqi瀛楁涓婂緩绔嬬殑鏄潪鑱氬悎绱㈠紩錛屽悗鑰呭湪姝ゅ瓧孌典笂寤虹珛鐨勬槸鑱氬悎绱㈠紩錛屼絾鏌ヨ閫熷害鍗存湁鐫澶╁¥涔嬪埆銆傛墍浠ワ紝騫墮潪鏄湪浠諱綍瀛楁涓婄畝鍗曞湴寤虹珛绱㈠紩灝辮兘鎻愰珮鏌ヨ閫熷害銆?
銆銆浠庡緩琛ㄧ殑璇彞涓紝鎴戜滑鍙互鐪嬪埌榪欎釜鏈夌潃1000涓囨暟鎹殑琛ㄤ腑fariqi瀛楁鏈?003涓笉鍚岃褰曘傚湪姝ゅ瓧孌典笂寤虹珛鑱氬悎绱㈠紩鏄啀鍚堥備笉榪囦簡銆傚湪鐜板疄涓紝鎴戜滑姣忓ぉ閮戒細鍙戝嚑涓枃浠訛紝榪欏嚑涓枃浠剁殑鍙戞枃鏃ユ湡灝辯浉鍚岋紝榪欏畬鍏ㄧ鍚堝緩绔嬭仛闆嗙儲寮曡姹傜殑錛氣滄棦涓嶈兘緇濆ぇ澶氭暟閮界浉鍚岋紝鍙堜笉鑳藉彧鏈夋瀬灝戞暟鐩稿悓鈥濈殑瑙勫垯銆傜敱姝ょ湅鏉ワ紝鎴戜滑寤虹珛鈥滈傚綋鈥濈殑鑱氬悎绱㈠紩瀵逛簬鎴戜滑鎻愰珮鏌ヨ閫熷害鏄潪甯擱噸瑕佺殑銆?
3銆佹妸鎵鏈夐渶瑕佹彁楂樻煡璇㈤熷害鐨勫瓧孌甸兘鍔犺繘鑱氶泦绱㈠紩錛屼互鎻愰珮鏌ヨ閫熷害
銆銆涓婇潰宸茬粡璋堝埌錛氬湪榪涜鏁版嵁鏌ヨ鏃墮兘紱諱笉寮瀛楁鐨勬槸鈥滄棩鏈熲濊繕鏈夌敤鎴鋒湰韜殑鈥滅敤鎴峰悕鈥濄傛棦鐒惰繖涓や釜瀛楁閮芥槸濡傛鐨勯噸瑕侊紝鎴戜滑鍙互鎶婁粬浠悎騫惰搗鏉ワ紝寤虹珛涓涓鍚堢儲寮曪紙compound index錛夈?
銆銆寰堝浜鴻涓哄彧瑕佹妸浠諱綍瀛楁鍔犺繘鑱氶泦绱㈠紩錛屽氨鑳芥彁楂樻煡璇㈤熷害錛屼篃鏈変漢鎰熷埌榪鋒儜錛氬鏋滄妸澶嶅悎鐨勮仛闆嗙儲寮曞瓧孌靛垎寮鏌ヨ錛岄偅涔堟煡璇㈤熷害浼氬噺鎱㈠悧錛熷甫鐫榪欎釜闂錛屾垜浠潵鐪嬩竴涓嬩互涓嬬殑鏌ヨ閫熷害錛堢粨鏋滈泦閮芥槸25涓囨潯鏁版嵁錛夛細錛堟棩鏈熷垪fariqi棣栧厛鎺掑湪澶嶅悎鑱氶泦绱㈠紩鐨勮搗濮嬪垪錛岀敤鎴峰悕neibuyonghu鎺掑湪鍚庡垪錛夛細
錛?錛塻elect gid,fariqi,neibuyonghu,title from Tgongwen where fariqi>''2004-5-5''
鏌ヨ閫熷害錛?513姣
錛?錛塻elect gid,fariqi,neibuyonghu,title from Tgongwen 銆銆銆銆銆銆銆銆銆銆銆銆where fariqi>''2004-5-5'' and neibuyonghu=''鍔炲叕瀹?'
鏌ヨ閫熷害錛?516姣
錛?錛塻elect gid,fariqi,neibuyonghu,title from Tgongwen where neibuyonghu=''鍔炲叕瀹?'
鏌ヨ閫熷害錛?0280姣
銆銆浠庝互涓婅瘯楠屼腑錛屾垜浠彲浠ョ湅鍒板鏋滀粎鐢ㄨ仛闆嗙儲寮曠殑璧峰鍒椾綔涓烘煡璇㈡潯浠跺拰鍚屾椂鐢ㄥ埌澶嶅悎鑱氶泦绱㈠紩鐨勫叏閮ㄥ垪鐨勬煡璇㈤熷害鏄嚑涔庝竴鏍風殑錛岀敋鑷蟲瘮鐢ㄤ笂鍏ㄩ儴鐨勫鍚堢儲寮曞垪榪樿鐣ュ揩錛堝湪鏌ヨ緇撴灉闆嗘暟鐩竴鏍風殑鎯呭喌涓嬶級錛涜屽鏋滀粎鐢ㄥ鍚堣仛闆嗙儲寮曠殑闈炶搗濮嬪垪浣滀負鏌ヨ鏉′歡鐨勮瘽錛岃繖涓儲寮曟槸涓嶈搗浠諱綍浣滅敤鐨勩傚綋鐒訛紝璇彞1銆?鐨勬煡璇㈤熷害涓鏍鋒槸鍥犱負鏌ヨ鐨勬潯鐩暟涓鏍鳳紝濡傛灉澶嶅悎绱㈠紩鐨勬墍鏈夊垪閮界敤涓婏紝鑰屼笖鏌ヨ緇撴灉灝戠殑璇濓紝榪欐牱灝變細褰㈡垚鈥滅儲寮曡鐩栤濓紝鍥犺屾ц兘鍙互杈懼埌鏈浼樸傚悓鏃訛紝璇瘋浣忥細鏃犺鎮ㄦ槸鍚︾粡甯鎬嬌鐢ㄨ仛鍚堢儲寮曠殑鍏朵粬鍒楋紝浣嗗叾鍓嶅鍒椾竴瀹氳鏄嬌鐢ㄦ渶棰戠箒鐨勫垪銆?
鍥涖佸叾浠栦功涓婃病鏈夌殑绱㈠紩浣跨敤緇忛獙鎬葷粨
1銆佺敤鑱氬悎绱㈠紩姣旂敤涓嶆槸鑱氬悎绱㈠紩鐨勪富閿熷害蹇?
銆銆涓嬮潰鏄疄渚嬭鍙ワ細錛堥兘鏄彁鍙?5涓囨潯鏁版嵁錛?
select gid,fariqi,neibuyonghu,reader,title from Tgongwen where fariqi=''2004-9-16''
浣跨敤鏃墮棿錛?326姣
select gid,fariqi,neibuyonghu,reader,title from Tgongwen where gid<=250000
浣跨敤鏃墮棿錛?470姣
榪欓噷錛岀敤鑱氬悎绱㈠紩姣旂敤涓嶆槸鑱氬悎绱㈠紩鐨勪富閿熷害蹇簡榪?/4銆?
2銆佺敤鑱氬悎绱㈠紩姣旂敤涓鑸殑涓婚敭浣渙rder by鏃墮熷害蹇紝鐗瑰埆鏄湪灝忔暟鎹噺鎯呭喌涓?
select gid,fariqi,neibuyonghu,reader,title from Tgongwen order by fariqi
鐢ㄦ椂錛?2936
select gid,fariqi,neibuyonghu,reader,title from Tgongwen order by gid
鐢ㄦ椂錛?8843
銆銆榪欓噷錛岀敤鑱氬悎绱㈠紩姣旂敤涓鑸殑涓婚敭浣渙rder by鏃訛紝閫熷害蹇簡3/10銆備簨瀹炰笂錛屽鏋滄暟鎹噺寰堝皬鐨勮瘽錛岀敤鑱氶泦绱㈠紩浣滀負鎺掑簭鍒楄姣斾嬌鐢ㄩ潪鑱氶泦绱㈠紩閫熷害蹇緱鏄庢樉鐨勫錛涜屾暟鎹噺濡傛灉寰堝ぇ鐨勮瘽錛屽10涓囦互涓婏紝鍒欎簩鑰呯殑閫熷害宸埆涓嶆槑鏄俱?
3銆佷嬌鐢ㄨ仛鍚堢儲寮曞唴鐨勬椂闂存錛屾悳绱㈡椂闂翠細鎸夋暟鎹崰鏁翠釜鏁版嵁琛ㄧ殑鐧懼垎姣旀垚姣斾緥鍑忓皯錛岃屾棤璁鴻仛鍚堢儲寮曚嬌鐢ㄤ簡澶氬皯涓細
select gid,fariqi,neibuyonghu,reader,title from Tgongwen where fariqi>''2004-1-1''
鐢ㄦ椂錛?343姣錛堟彁鍙?00涓囨潯錛?
select gid,fariqi,neibuyonghu,reader,title from Tgongwen where fariqi>''2004-6-6''
鐢ㄦ椂錛?170姣錛堟彁鍙?0涓囨潯錛?/p>
select gid,fariqi,neibuyonghu,reader,title from Tgongwen where fariqi=''2004-9-16''
鐢ㄦ椂錛?326姣錛堝拰涓婂彞鐨勭粨鏋滀竴妯′竴鏍楓傚鏋滈噰闆嗙殑鏁伴噺涓鏍鳳紝閭d箞鐢ㄥぇ浜庡彿鍜岀瓑浜庡彿鏄竴鏍風殑錛?/p>
select gid,fariqi,neibuyonghu,reader,title from Tgongwen 銆銆銆銆銆銆銆銆銆銆銆銆where fariqi>''2004-1-1'' and fariqi<''2004-6-6''
鐢ㄦ椂錛?280姣
4銆佹棩鏈熷垪涓嶄細鍥犱負鏈夊垎縐掔殑杈撳叆鑰屽噺鎱㈡煡璇㈤熷害
銆銆涓嬮潰鐨勪緥瀛愪腑錛屽叡鏈?00涓囨潯鏁版嵁錛?004騫?鏈?鏃ヤ互鍚庣殑鏁版嵁鏈?0涓囨潯錛屼絾鍙湁涓や釜涓嶅悓鐨勬棩鏈燂紝鏃ユ湡綺劇‘鍒版棩錛涗箣鍓嶆湁鏁版嵁50涓囨潯錛屾湁5000涓笉鍚岀殑鏃ユ湡錛屾棩鏈熺簿紜埌縐掋?
select gid,fariqi,neibuyonghu,reader,title from Tgongwen 銆銆銆銆銆銆銆銆銆銆where fariqi>''2004-1-1'' order by fariqi
鐢ㄦ椂錛?390姣
select gid,fariqi,neibuyonghu,reader,title from Tgongwen 銆銆銆銆銆銆銆銆銆銆銆銆where fariqi<''2004-1-1'' order by fariqi
鐢ㄦ椂錛?453姣 鍚娉細姝ゆ枃绔犲紩鑷?a >http://www.vckbase.com/document/viewdoc/?id=1307 聽鎬濇兂鍩烘湰涓鑷寸殑錛屾葷粨涓嬫潵錛屽鏃ユ湡寤虹珛鑱氶泦绱㈠紩姣旇緝鍚堥傘?/p> 聽榪樻湁涓鏈夊叧绱㈠紩鎬ц兘鐨凪S鐨勬枃绔狅細浣跨敤 SQL Server 2000 绱㈠紩瑙嗗浘鎻愰珮鎬ц兘
浜斻佸叾浠栨敞鎰忎簨欏?/b>
銆銆鈥滄按鍙澆鑸燂紝浜﹀彲瑕嗚垷鈥濓紝绱㈠紩涔熶竴鏍楓傜儲寮曟湁鍔╀簬鎻愰珮媯绱㈡ц兘錛屼絾榪囧鎴栦笉褰撶殑绱㈠紩涔熶細瀵艱嚧緋葷粺浣庢晥銆傚洜涓虹敤鎴峰湪琛ㄤ腑姣忓姞榪涗竴涓儲寮曪紝鏁版嵁搴撳氨瑕佸仛鏇村鐨勫伐浣溿傝繃澶氱殑绱㈠紩鐢氳嚦浼氬鑷寸儲寮曠鐗囥?
銆銆鎵浠ヨ錛屾垜浠寤虹珛涓涓滈傚綋鈥濈殑绱㈠紩浣撶郴錛岀壒鍒槸瀵硅仛鍚堢儲寮曠殑鍒涘緩錛屾洿搴旂簿鐩婃眰綺撅紝浠ヤ嬌鎮ㄧ殑鏁版嵁搴撹兘寰楀埌楂樻ц兘鐨勫彂鎸ャ?
銆銆褰撶劧錛屽湪瀹炶返涓紝浣滀負涓涓敖鑱岀殑鏁版嵁搴撶鐞嗗憳錛屾偍榪樿澶氭祴璇曚竴浜涙柟妗堬紝鎵懼嚭鍝鏂規鏁堢巼鏈楂樸佹渶涓烘湁鏁堛?
聽鎰熻絎旇呰姣旇緝閫忓交錛屽茍鍙傝冧簡鍙︿竴綃囷細绱㈠紩鐨勪嬌鐢ㄥ拰浼樺寲
ODBC API 銆?/span> MFC ODBC 銆?/span> DAO 銆?/span> OLE DB 銆?/span> ADO
璁塊棶閫熷害錛氫紶緇熺殑 ODBC 閫熷害杈冩參銆?/span> OLE DB 鍜?/span> ADO 閮芥槸鍩轟簬 COM 鎶鏈紝浣跨敤璇ユ妧鏈彲浠ョ洿鎺ヨ闂暟鎹簱鐨勯┍鍔ㄧ▼搴忥紝閫熷害澶уぇ鎻愰珮銆?/span>
鍙墿灞曟э細閫氳繃 OLE DB 鍜?/span> ActiveX 鎶鏈紝鍙互鍒╃敤 VC 鎻愪緵鐨勫悇縐嶇粍浠訛紝鎺т歡鍜岀涓夋柟鎻愪緵鐨勭粍寤恒備粠鑰屽疄鐜板簲鐢ㄧ▼搴忕粍浠跺寲銆?/span>
璁塊棶涓嶅悓鏁版嵁婧愶細浼犵粺 ODBC 鍙兘璁塊棶鍏崇郴鏁版嵁搴撱?/span> VC 涓彁渚?/span> OLD DB 鎶鏈彲浠ヨВ鍐寵闂銆?/span>
浜屻?/span> 鍑犵鎶鏈榪?/span>
1銆?span style="FONT: 7pt 'Times New Roman'">聽
ODBC API鎻愪緵涓涓氱敤鎺ュ彛錛屼負 ORACLE 鍜?/span> SQLSERVER 閮芥彁渚涗簡椹卞姩紼嬪簭銆傜敤鎴峰彲浠?/span> SQL 璇彞瀵規暟鎹簱榪涜鐩存帴鐨勫簳灞傚姛鑳芥搷浣溿備嬌鐢ㄦ椂搴斿寘鍚互涓嬪ご鏂囦歡銆?/span> 鈥漇QL.H鈥?鈥漇QLEXT.H鈥?鈥漇QLTYPES.H鈥?
浣跨敤姝ラ濡備笅錛?/span>
絎竴姝ワ細鍒嗛厤 ODBC 鐜錛屽垵濮嬪寲涓浜涘唴閮ㄧ粨鏋勩傚畬鎴愯姝ワ紝闇瑕佸垎閰嶄竴涓?/span> SQLHENV 綾誨瀷鐨勫彉閲忓湪 ODBC 鐜涓仛鍙ユ焺浣跨敤銆?/span>
絎簩姝ワ細涓哄皢瑕佷嬌鐢ㄧ殑姣忎竴涓暟鎹簮鍒嗛厤涓涓繛鎺ュ彞鏌勶紝鏈夊嚱鏁?/span> SQLALLocHandle 錛堬級瀹屾垚銆?/span>
絎笁姝ワ細浣跨敤 SQLConnect 錛堬級鎶婅繛鎺ュ彞鏌勪笌鏁版嵁搴撹繛鎺ワ紝鍙互鍏堥氳繃 SQLSetConnectAttr 錛堬級璁劇疆榪炴帴灞炴с?/span>
絎洓姝ワ細榪涜 SQL 璇彞鎿嶄綔銆傛搷浣滃畬灝卞彲浠ユ柇寮涓庢暟鎹簱鐨勮繛鎺ャ?/span>
絎簲姝ワ細閲婃斁 ODBC 鐜銆?/span>
鐗圭偣錛氬姛鑳藉己澶э紝鎻愪緵寮傛鎿嶄綔錛屼簨鍔″鐞嗙瓑楂樼駭鍔熻兘銆傜洰鍓嶆墍鏈夊叧緋繪暟鎹簱閮芥彁渚涗簡 ODBC 鐨勯┍鍔ㄧ▼搴忥紝浣跨敤寰堝箍娉涖?/span>
緙虹偣錛氬緢闅捐闂璞℃暟鎹簱鍜岄潪鍏崇郴鏁版嵁搴撱?/span>
2銆?span style="FONT: 7pt 'Times New Roman'">聽
MFC ODBC 綾?/span>
涓虹畝鍖栦嬌鐢?/span> ODBC API 錛?/span> VC 鎻愪緵浜?/span> MFC ODBC 綾伙紝灝佽浜?/span> ODBC API 銆?/span>
涓昏 MFC ODBC 綾誨涓嬶細
CDatabase 綾伙細涓涓?/span> CDatabase 瀵硅薄琛ㄧず涓涓埌鏁版嵁婧愮殑榪炴帴錛岄氳繃瀹冨彲浠ユ搷浣滄暟鎹簮銆備竴鑸笉闇瑕佺洿鎺ヤ嬌鐢?/span> CDatabase 瀵硅薄錛屽洜涓?/span> CDecordSet 瀵硅薄鍙互瀹炵幇澶у鏁板姛鑳斤紝浣嗗湪榪涜浜嬪姟澶勭悊鏃訛紝 CDatabase 灝辮搗鍒板叧閿綔鐢ㄣ?/span>
CRecordSet 綾伙細涓涓?/span> CRecordSet 瀵硅薄浠h〃涓涓粠鏁版嵁婧愰夋嫨鐨勪竴緇勮褰曠殑闆嗗悎 ----- 璁板綍闆嗐傝褰曢泦鏈変袱縐嶅艦寮忥細 snapshot 鍜?/span> dynaset 銆傚墠鑰呰〃紺烘槸闈欐佽鍥俱傚悗鑰呰〃紺鴻褰曢泦涓庡叾瀹冪敤鎴峰鏁版嵁搴撶殑鏇存柊淇濇寔鍚屾銆?/span>
CRecordView 綾伙細鏄湪絀洪棿涓樉紺烘暟鎹簱璁板綍鐨勮鍥俱傝繖縐嶈鍥炬槸鐩存帴榪炲埌涓涓?/span> CRecordSet 瀵硅薄鐨勬牸寮忚鍥俱備粬浠庝竴涓璇濇妯$増璧勬簮鍒涘緩銆傚茍灝?/span> CRecordSet 瀵硅薄鐨勫瓧孌墊樉紺哄湪瀵硅瘽妗嗘ā鐗堢殑鎺т歡閲屻傚璞″埄鐢?/span> DDX 鍜?/span> RFX 鏈哄埗銆備嬌鏍煎紡涓婄殑鎺т歡鍜岃褰曢泦鐨勫瓧孌典箣闂存暟鎹Щ鍔ㄨ嚜鍔ㄥ寲銆?/span>
CDBException 綾伙細鐢?/span> Cexception 綾繪淳鐢燂紝浠?/span> 3 涓戶鎵跨殑鍙橀噺鍙嶆槧瀵規暟鎹簱鎿嶄綔鏃剁殑寮傚父銆?/span>
聽M_nRetCode:聽 ODBC 榪斿洖鐮併?/span>
M_strError: 瀛楃涓詫紝鎻忚堪閫犳垚鎶涘嚭寮傚父鐨勯敊璇師鍥犮?/span>
M_strStateNativeOrigin: 瀛楃涓詫紝鎻忚堪浠?/span> ODBC 閿欒鐮佽〃紺虹殑寮傚父閿欒銆?/span>
3銆?span style="FONT: 7pt 'Times New Roman'">聽
MFC DAO
MFC DAO 鏄井杞彁渚涚殑鐢ㄤ簬璁塊棶 Microsoft Jet 鏁版嵁搴撴枃浠訛紙 * 銆?/span> Mdb 錛夌殑宸ュ叿銆傚綋鍙渶璁塊棶 Access 鏁版嵁搴撴椂鐢ㄨ鎶鏈緢鏂逛究銆?/span>
4銆?span style="FONT: 7pt 'Times New Roman'">聽 OLE DB
涓?/span> ODBC 鎶鏈被浼鹼紝 OLE DB 灞炰簬鏁版嵁搴撹闂妧鏈腑鐨勫簳灞傛帴鍙c?/span>
鐩存帴浣跨敤 OLEDB 闇瑕佸ぇ閲忎唬鐮侊紝 VC 涓彁渚涗簡 ATL 妯$増錛?/span>
OLEDB 妗嗘灦瀹氫箟浜嗗簲鐢ㄧ殑 3 涓熀鏈被銆?/span>
鏁版嵁鎻愪緵紼嬪簭 Data Provider 錛?/span> 鎷ユ湁鑷繁鐨勬暟鎹茍浠ヨ〃鏍煎艦寮忔樉紺烘暟鎹殑搴旂敤紼嬪簭銆?/span>
浣跨敤鑰?/span> Consumers 錛氳瘯鐢?/span> OLEDB 鎺ュ彛瀵瑰瓨鍌ㄥ湪鏁版嵁鎻愪緵紼嬪簭涓鏁版嵁榪涜鎺у埗鐨勫簲鐢ㄧ▼搴忋?/span>
鏈嶅姟鎻愪緵紼嬪簭 ServiceProvider 錛氭槸鏁版嵁鎻愪緵紼嬪簭鍜屼嬌鐢ㄨ呯殑緇勫悎銆?/span>
浣跨敤 OLE DB 緙栫▼鏃訛紝鐢ㄦ埛浣跨敤緇勪歡瀵硅薄寮鍙戠▼搴忥紝榪欎簺緇勪歡鍖呮嫭錛?/span>
鏋氫婦鍣細鐢ㄤ簬鍒楀嚭鍙敤鐨勬暟鎹簮錛?/span>
鏁版嵁婧愶細浠h〃鍗曠嫭鐨勬暟鎹拰鏈嶅姟鎻愪緵紼嬪簭錛岀敤浜庡垱寤哄璇濓紱
瀵硅瘽錛?/span> 聽聽聽 鐢ㄤ簬鍒涘緩浜嬪姟鍜屽懡浠わ紱
浜嬪姟錛?/span> 聽聽聽 鐢ㄤ簬灝嗗涓搷浣滃綊騫朵負鍗曚竴浜嬪姟澶勭悊錛?/span>
鍛戒護錛?/span> 聽聽聽 鐢ㄤ簬鍚戞暟鎹簮鍙戦佹枃鏈懡浠わ紙 SQL 錛夛紝榪斿洖琛岄泦錛?/span>
閿欒錛?/span> 聽聽聽 鐢ㄤ簬鑾峰緱閿欒淇℃伅銆?/span>
5銆?span style="FONT: 7pt 'Times New Roman'">聽
ADO 鎶鏈槸鍩轟簬 OLE DB 鐨勮闂帴鍙c傜戶鎵夸簡 OLEDB 鐨勪紭鐐癸紝騫跺 OLEDB 鐨勬帴鍙d綔浜嗗皝瑁咃紝瀹氫箟浜?/span> ADO 瀵硅薄錛屼嬌寮鍙戠畝鍖栥?/span> ADO 灞炰簬鏁版嵁搴撹闂殑楂樺眰鎺ュ彛銆?/span>
ADO 鍦ㄦ湇鍔″櫒搴旂敤鏂歸潰闈炲父鏈夋晥錛岀壒鍒槸鍔ㄦ佹湇鍔″櫒欏甸潰錛?/span> ASP 錛夌殑鏀寔銆?/span>
ADO 瀵硅薄緇撴瀯綾諱技浜?/span> OLEDB 錛屼絾騫朵笉渚濋潬瀵硅薄灞傛銆傚ぇ澶氭暟鎯呭喌鐢ㄦ埛鍙渶鍒涘緩騫朵嬌鐢ㄩ渶瑕佺殑瀵硅薄銆備笅闈㈢殑瀵硅薄綾葷粍鎴愪簡 ADO 鎺ュ彛銆?/span>
Connection 錛?/span> 聽 鐢ㄤ簬琛ㄧず涓庢暟鎹簱鐨勮繛鎺ワ紝浠ュ強澶勭悊涓浜涗簨鍔″拰鍛戒護銆?/span>
Command 錛?/span> 聽聽 鐢ㄤ簬澶勭悊浼犻佺粰鏁版嵁婧愮殑鍛戒護銆?/span>
Recordset 錛?/span> 聽聽 鐢ㄤ簬澶勭悊鏁版嵁鐨勮〃鏍奸泦錛?/span> 鍖呮嫭鑾峰彇鍜屼慨鏀規暟鎹?/span>
Field 錛?/span> 聽聽聽聽聽聽聽聽聽聽 鐢ㄤ簬琛ㄧず璁板綍闆嗕腑鐨勫垪淇℃伅錛屽寘鎷垪鍊煎拰鍏朵粬淇℃伅銆?/span>
Parameter 錛?/span> 聽聽 鍦ㄤ紶閫佺粰鏁版嵁婧愮殑鍛戒護涔嬮棿浼犻掓暟鎹?/span>
Property 錛?/span> 聽聽聽聽 鐢ㄤ簬鎿嶄綔鍦?/span> ADO 涓嬌鐢ㄧ殑鍏跺畠瀵硅薄鐨勮緇嗗睘鎬с?/span>
Errro 錛?/span> 聽聽聽聽聽聽聽聽聽 鐢ㄤ簬鑾峰彇鍙兘鍙戠敓鐨勮緇嗛敊璇俊鎭?/span>
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ALTER TABLE |
銆銆閫氳繃鏇存敼銆佹坊鍔犮侀櫎鍘誨垪鍜岀害鏉燂紝鎴栬呴氳繃鍚敤鎴栫鐢ㄧ害鏉熷拰瑙﹀彂鍣ㄦ潵鏇存敼琛ㄧ殑瀹氫箟銆?BR>銆銆 銆銆璇硶 銆銆ALTER TABLE table 銆銆{ [ ALTER COLUMN column_name 銆銆 { new_data_type [ ( precision [ , scale ] ) ] 銆銆 [ COLLATE < collation_name > ] 銆銆 [ NULL | NOT NULL ] 銆銆 | {ADD | DROP } ROWGUIDCOL } 銆銆 ] 銆銆 | ADD 銆銆 { [ < column_definition > ] 銆銆 | column_name AS computed_column_expression 銆銆 } [ ,...n ] 銆銆 | [ WITH CHECK | WITH NOCHECK ] ADD 銆銆 { < table_constraint > } [ ,...n ] 銆銆 | DROP 銆銆 { [ CONSTRAINT ] constraint_name 銆銆 | COLUMN column } [ ,...n ] 銆銆 | { CHECK | NOCHECK } CONSTRAINT 銆銆 { ALL | constraint_name [ ,...n ] } 銆銆 | { ENABLE | DISABLE } TRIGGER 銆銆 { ALL | trigger_name [ ,...n ] } 銆銆} 銆銆 銆銆< column_definition > ::= 銆銆 { column_name data_type } 銆銆 [ [ DEFAULT constant_expression ] [ WITH VALUES ] 銆銆 | [ IDENTITY [ ( seed , increment ) [ NOT FOR REPLICATION ] ] ] 銆銆 ] 銆銆 [ ROWGUIDCOL ] 銆銆 [ COLLATE < collation_name > ] 銆銆 [ < column_constraint > ] [ ...n ] 銆銆 銆銆< column_constraint > ::= 銆銆 [ CONSTRAINT constraint_name ] 銆銆 { [ NULL | NOT NULL ] 銆銆 | [ { PRIMARY KEY | UNIQUE } 銆銆 [ CLUSTERED | NONCLUSTERED ] 銆銆 [ WITH FILLFACTOR = fillfactor ] 銆銆 [ ON { filegroup | DEFAULT } ] 銆銆 ] 銆銆 | [ [ FOREIGN KEY ] 銆銆 REFERENCES ref_table [ ( ref_column ) ] 銆銆 [ ON DELETE { CASCADE | NO ACTION } ] 銆銆 [ ON UPDATE { CASCADE | NO ACTION } ] 銆銆 [ NOT FOR REPLICATION ] 銆銆 ] 銆銆 | CHECK [ NOT FOR REPLICATION ] 銆銆 ( logical_expression ) 銆銆 } 銆銆 銆銆< table_constraint > ::= 銆銆 [ CONSTRAINT constraint_name ] 銆銆 { [ { PRIMARY KEY | UNIQUE } 銆銆 [ CLUSTERED | NONCLUSTERED ] 銆銆 { ( column [ ,...n ] ) } 銆銆 [ WITH FILLFACTOR = fillfactor ] 銆銆 [ ON { filegroup | DEFAULT } ] 銆銆 ] 銆銆 | FOREIGN KEY 銆銆 [ ( column [ ,...n ] ) ] 銆銆 REFERENCES ref_table [ ( ref_column [ ,...n ] ) ] 銆銆 [ ON DELETE { CASCADE | NO ACTION } ] 銆銆 [ ON UPDATE { CASCADE | NO ACTION } ] 銆銆 [ NOT FOR REPLICATION ] 銆銆 | DEFAULT constant_expression 銆銆 [ FOR column ] [ WITH VALUES ] 銆銆 | CHECK [ NOT FOR REPLICATION ] 銆銆 ( search_conditions ) 銆銆 } 銆銆 銆銆鍙傛暟 銆銆table 銆銆 銆銆鏄鏇存敼鐨勮〃鐨勫悕縐般傚鏋滆〃涓嶅湪褰撳墠鏁版嵁搴撲腑鎴栬呬笉灞炰簬褰撳墠鐢ㄦ埛鎵鎷ユ湁錛屽彲浠ユ樉寮忔寚瀹氭暟鎹簱鍜屾墍鏈夎呫?BR>銆銆 銆銆ALTER COLUMN 銆銆 銆銆鎸囧畾瑕佹洿鏀圭粰瀹氬垪銆傚鏋滃吋瀹圭駭鍒槸 65 鎴栧皬浜?65錛屽皢涓嶅厑璁鎬嬌鐢?ALTER COLUMN銆?BR>銆銆瑕佹洿鏀圭殑鍒椾笉鑳芥槸錛? 銆銆 銆銆鏁版嵁綾誨瀷涓?text銆乮mage銆乶text 鎴?timestamp 鐨勫垪銆?BR>銆銆 銆銆 銆銆琛ㄧ殑 ROWGUIDCOL 鍒椼?BR>銆銆 銆銆 銆銆璁$畻鍒楁垨鐢ㄤ簬璁$畻鍒椾腑鐨勫垪銆?BR>銆銆 銆銆 銆銆琚鍒跺垪銆?BR>銆銆 銆銆 銆銆鐢ㄥ湪绱㈠紩涓殑鍒楋紝闄ら潪璇ュ垪鏁版嵁綾誨瀷鏄?varchar銆乶varchar 鎴?varbinary錛屾暟鎹被鍨嬫病鏈夋洿鏀癸紝鑰屼笖鏂板垪澶у皬絳変簬鎴栬呭ぇ浜庢棫鍒楀ぇ灝忋?BR>銆銆 銆銆 銆銆鐢ㄥ湪鐢?CREATE STATISTICS 璇彞鍒涘緩鐨勭粺璁′腑鐨勫垪銆傞鍏堢敤 DROP STATISTICS 璇彞鍒犻櫎緇熻銆傜敱鏌ヨ浼樺寲鍣ㄨ嚜鍔ㄧ敓鎴愮殑緇熻浼氱敱 ALTER COLUMN 鑷姩闄ゅ幓銆?BR>銆銆 銆銆 銆銆鐢ㄥ湪 PRIMARY KEY 鎴?[FOREIGN KEY] REFERENCES 綰︽潫涓殑鍒椼?BR>銆銆 銆銆 銆銆鐢ㄥ湪 CHECK 鎴?UNIQUE 綰︽潫涓殑鍒楋紝闄ら潪鐢ㄥ湪 CHECK 鎴?UNIQUE 綰︽潫涓殑鍙彉闀垮害鍒楃殑闀垮害鍏佽鏇存敼銆?BR>銆銆 銆銆 銆銆鏈夌浉鍏寵仈鐨勯粯璁ゅ肩殑鍒楋紝闄ら潪鍦ㄤ笉鏇存敼鏁版嵁綾誨瀷鐨勬儏鍐典笅鍏佽鏇存敼鍒楃殑闀垮害銆佺簿搴︽垨灝忔暟浣嶆暟銆? 銆銆鏈変簺鏁版嵁綾誨瀷鐨勬洿鏀瑰彲鑳藉鑷存暟鎹殑鏇存敼銆備緥濡傦紝灝嗘暟鎹被鍨嬩負 nchar 鎴?nvarchar 鐨勫垪鏇存敼涓?char 鎴?varchar 綾誨瀷錛屽皢瀵艱嚧鎵╁睍瀛楃鐨勮漿鎹€傞檷浣庡垪鐨勭簿搴﹀拰灝忔暟浣嶆暟鍙兘瀵艱嚧鏁版嵁鎴柇銆?BR>銆銆column_name 銆銆 銆銆鏄鏇存敼銆佹坊鍔犳垨闄ゅ幓鐨勫垪鐨勫悕縐般傚浜庢柊鍒楋紝濡傛灉鏁版嵁綾誨瀷涓?timestamp錛宑olumn_name 鍙互鐪佺暐銆傚浜?timestamp 鏁版嵁綾誨瀷鐨勫垪錛屽鏋滄湭鎸囧畾 column_name錛屽皢浣跨敤鍚嶇О timestamp銆?BR>銆銆 銆銆new_data_type 銆銆 銆銆鏄鏇存敼鐨勫垪鐨勬柊鏁版嵁綾誨瀷銆傝鏇存敼鐨勫垪鐨?new_data_type 搴旂鍚堜笅鍒楀噯鍒欙細 銆銆 銆銆鍘熸潵鐨勬暟鎹被鍨嬪繀欏誨彲浠ラ殣寮忚漿鎹負鏂版暟鎹被鍨嬨?BR>銆銆 銆銆 銆銆new_data_type 綾誨瀷涓嶈兘涓?timestamp銆?BR>銆銆 銆銆 銆銆瀵?ALTER COLUMN錛孉NSI 絀洪粯璁ゅ煎緇堟墦寮錛涘鏋滄病鏈夋寚瀹氾紝鍒楀皢鍙負絀恒?BR>銆銆 銆銆 銆銆瀵?ALTER COLUMN錛孉NSI 濉厖濮嬬粓鎵撳紑銆?BR>銆銆 銆銆 銆銆濡傛灉瑕佹洿鏀圭殑鍒楁槸鏍囪瘑鍒楋紝new_data_type 蹇呴』鏄敮鎸佹爣璇嗗睘鎬х殑鏁版嵁綾誨瀷銆?BR>銆銆 銆銆 銆銆灝嗗拷鐣?SET ARITHABORT 鐨勫綋鍓嶈緗侫LTER TABLE 璇彞鐨勮涓哄鍚?ARITHABORT 閫夐」涓?ON 鏃朵竴鏍楓? 銆銆precision 銆銆 銆銆鏄寚瀹氭暟鎹被鍨嬬殑綺懼害銆?BR>銆銆scale 銆銆 銆銆鏄寚瀹氭暟鎹被鍨嬬殑灝忔暟浣嶆暟銆?BR>銆銆COLLATE < collation_name > 銆銆 銆銆涓烘洿鏀瑰垪鎸囧畾鏂扮殑鎺掑簭瑙勫垯銆傛帓搴忚鍒欏悕縐版棦鍙互鏄?Windows 鎺掑簭瑙勫垯鍚嶇О錛屼篃鍙互鏄?SQL 鎺掑簭瑙勫垯鍚嶇О銆?BR>銆銆COLLATE 瀛愬彞鍙兘鐢ㄤ簬鏇存敼鏁版嵁綾誨瀷涓?char銆乿archar銆乼ext銆乶char銆乶varchar 鍜?ntext 鐨勫垪鐨勬帓搴忚鍒欍傚鏋滄湭鎸囧畾錛屽垯姝ゅ垪閲囩敤鏁版嵁搴撶殑榛樿鎺掑簭瑙勫垯銆?BR>銆銆 銆銆鑻ユ弧瓚充笅鍒楁潯浠訛紝鍒?ALTER COLUMN 涓嶈兘鏇存敼鎺掑簭瑙勫垯錛? 銆銆 銆銆媯鏌ョ害鏉熴佸閿害鏉熸垨璁$畻鍒楀紩鐢ㄤ簡鏇存敼鍒椼? 銆銆 銆銆 銆銆鍦ㄦ鍒椾笂鍒涘緩浜嗙儲寮曘佺粺璁℃垨鍏ㄦ枃绱㈠紩銆傛洿鏀瑰垪鐨勬帓搴忚鍒欐椂錛岃鍒椾笂鑷姩鍒涘緩鐨勭粺璁″皢闄ゅ幓銆?BR>銆銆 銆銆 銆銆SCHEMABOUND 瑙嗗浘鎴栧嚱鏁板紩鐢ㄤ簡姝ゅ垪銆? 銆銆NULL | NOT NULL 銆銆 銆銆鎸囧畾璇ュ垪鏄惁鍙帴鍙楃┖鍊箋備笉鍏佽絀哄肩殑鍒楀彧鏈夊湪鎸囧畾浜嗛粯璁ゅ肩殑鎯呭喌涓嬶紝鎵嶈兘鐢?ALTER TABLE 璇彞鍚戣〃涓坊鍔犮傛坊鍔犲埌琛ㄤ腑鐨勬柊鍒楄涔堝厑璁哥┖鍊鹼紝瑕佷箞蹇呴』鎸囧畾榛樿鍊箋?BR>銆銆 銆銆濡傛灉鏂板垪鍏佽絀哄鹼紝鑰屼笖娌℃湁鎸囧畾榛樿鍊鹼紝閭d箞鏂板垪鍦ㄨ〃涓瘡涓琛岄兘鍖呭惈絀哄箋傚鏋滄柊鍒楀厑璁哥┖鍊煎茍涓旀寚瀹氫簡鏂板垪鐨勯粯璁ゅ鹼紝閭d箞鍙互浣跨敤 WITH VALUES 閫夐」鍦ㄨ〃涓墍鏈夌幇鏈夎鐨勬柊鍒椾腑瀛樺偍榛樿鍊箋?BR>銆銆 銆銆濡傛灉鏂板垪涓嶅厑璁哥┖鍊鹼紝閭d箞鏂板垪蹇呴』鍏鋒湁 DEFAULT 瀹氫箟錛岃屼笖鏂板垪鐨勬墍鏈夌幇鏈夎涓皢鑷姩瑁呰澆璇ラ粯璁ゅ箋?BR>銆銆 銆銆鍙湪 ALTER COLUMN 璇彞涓寚瀹?NULL 浠ヤ嬌 NOT NULL 鍒楀厑璁哥┖鍊鹼紝浣?PRIMARY KEY 綰︽潫涓殑鍒楅櫎澶栥傚彧鏈夊垪涓笉鍖呭惈絀哄兼椂錛孉LTER COLUMN 涓墠鍙寚瀹?NOT NULL銆傚繀欏誨皢絀哄兼洿鏂頒負闈炵┖鍊煎悗錛屾墠鍏佽鎵ц ALTER COLUMN NOT NULL 璇彞錛屾瘮濡傦細 銆銆 銆銆UPDATE MyTable SET NullCol = N'some_value' WHERE NullCol IS NULL 銆銆 銆銆ALTER TABLE MyTable ALTER COLUMN NullCOl NVARCHAR(20) NOT NULL 銆銆 銆銆濡傛灉 ALTER COLUMN 涓寚瀹氫簡 NULL 鎴?NOT NULL錛岄偅涔堝繀欏誨悓鏃舵寚瀹?new_data_type [(precision [, scale ])]銆傚鏋滀笉鏇存敼鏁版嵁綾誨瀷銆佺簿搴﹀拰灝忔暟浣嶆暟錛岃鎸囧畾鍒楃殑榪欎簺鍊肩殑褰撳墠鍊箋?BR>銆銆 銆銆[ {ADD | DROP} ROWGUIDCOL ] 銆銆 銆銆鎸囧畾鍦ㄦ寚瀹氬垪涓婃坊鍔犳垨闄ゅ幓 ROWGUIDCOL 灞炴с俁OWGUIDCOL 鏄竴涓叧閿瓧錛岃〃紺哄垪鏄鍏ㄥ眬鍞竴鏍囪瘑絎﹀垪銆傚浜庢瘡涓〃鍙兘鎸囨淳涓涓?uniqueidentifier 鍒椾綔涓?ROWGUIDCOL 鍒椼俁OWGUIDCOL 灞炴у彧鑳芥寚媧劇粰 uniqueidentifier 鍒椼?BR>銆銆 銆銆ROWGUIDCOL 灞炴у茍涓嶅己鍒跺垪涓墍瀛樺偍鍊肩殑鍞竴鎬с傝灞炴т篃涓嶄細涓烘彃鍏ュ埌琛ㄤ腑鐨勬柊琛岃嚜鍔ㄧ敓鎴愬箋傝嫢瑕佷負姣忓垪鐢熸垚鍞竴鍊鹼紝閭d箞鎴栬呭湪 INSERT 璇彞涓嬌鐢?NEWID 鍑芥暟錛屾垨鑰呭皢 NEWID 鍑芥暟鎸囧畾涓鴻鍒楃殑榛樿鍊箋?BR>銆銆 銆銆ADD 銆銆 銆銆鎸囧畾瑕佹坊鍔犱竴涓垨澶氫釜鍒楀畾涔夈佽綆楀垪瀹氫箟鎴栬呰〃綰︽潫銆?BR>銆銆 銆銆computed_column_expression 銆銆 銆銆鏄竴涓畾涔夎綆楀垪鐨勫肩殑琛ㄨ揪寮忋傝綆楀垪鏄茍涓嶇墿鐞嗗湴瀛樺偍鍦ㄨ〃涓殑铏氭嫙鍒楋紝璇ュ垪鐢ㄨ〃杈懼紡璁$畻寰楀嚭錛岃琛ㄨ揪寮忎嬌鐢ㄥ悓涓琛ㄤ腑鐨勫叾瀹冨垪銆備緥濡傦紝璁$畻鍒楃殑瀹氫箟鍙互鏄細cost AS price * qty銆傝〃杈懼紡鍙互鏄潪璁$畻鍒楃殑鍒楀悕銆佸父閲忋佸嚱鏁般佸彉閲忥紝涔熷彲浠ユ槸鐢ㄤ竴涓垨澶氫釜榪愮畻絎﹁繛鎺ョ殑涓婅堪鍏冪礌鐨勪換鎰忕粍鍚堛傝〃杈懼紡涓嶈兘涓哄瓙鏌ヨ銆?BR>銆銆 銆銆璁$畻鍒楀彲鐢ㄤ簬閫夋嫨鍒楄〃銆乄HERE 瀛愬彞銆丱RDER BY 瀛楀彞鎴栧叾瀹冧換浣曞彲浠ヤ嬌鐢ㄥ父瑙勮〃杈懼紡鐨勪綅緗紝浣嗕笅鍒楁儏鍐甸櫎澶栵細 銆銆 銆銆璁$畻鍒椾笉鑳界敤浣?DEFAULT 鎴?FOREIGN KEY 綰︽潫瀹氫箟錛屼篃涓嶈兘涓?NOT NULL 綰︽潫瀹氫箟涓璧蜂嬌鐢ㄣ備絾鏄紝濡傛灉璁$畻鍒楃敱鍏鋒湁紜畾鎬х殑琛ㄨ揪寮忓畾涔夛紝騫朵笖绱㈠紩鍒椾腑鍏佽璁$畻緇撴灉鐨勬暟鎹被鍨嬶紝鍒欏彲灝嗚鍒楃敤浣滅儲寮曚腑鐨勯敭鍒楋紝鎴栫敤浣?PRIMARY KEY 鎴?UNIQUE 綰︽潫鐨勪竴閮ㄥ垎銆? 銆銆渚嬪錛屽鏋滆〃涓湁鏁存暟鍒?a 鍜?b錛岄偅涔堣綆楀垪 a+b 涓婂彲寤虹珛绱㈠紩錛岃岃綆楀垪 a+DATEPART(dd, GETDATE()) 涓婂垯涓嶈兘錛屽洜涓鴻鍊煎皢鍦ㄥ悗緇皟鐢ㄦ椂鏇存敼銆?BR>銆銆 銆銆璁$畻鍒椾笉鑳戒綔涓?INSERT 鎴?UPDATE 璇彞鐨勭洰鏍囥? 銆銆 銆銆 銆銆璇存槑 鐢變簬琛ㄤ腑璁$畻鍒楁墍鐢ㄥ垪涓殑鍚勮鍙兘鏈変笉鍚岀殑鍊鹼紝鎵浠ヨ綆楀垪鐨勬瘡涓琛屽彲鑳芥湁涓嶅悓鐨勫箋?BR>銆銆 銆銆n 銆銆 銆銆鏄〃紺哄墠闈㈢殑欏瑰彲閲嶅 n 嬈$殑鍗犱綅絎︺?BR>銆銆 銆銆WITH CHECK | WITH NOCHECK 銆銆 銆銆鎸囧畾琛ㄤ腑鐨勬暟鎹槸鍚︾敤鏂版坊鍔犵殑鎴栭噸鏂板惎鐢ㄧ殑 FOREIGN KEY 鎴?CHECK 綰︽潫榪涜楠岃瘉銆傚鏋滄病鏈夋寚瀹氾紝瀵逛簬鏂扮害鏉燂紝鍋囧畾涓?WITH CHECK錛屽浜庨噸鏂板惎鐢ㄧ殑綰︽潫錛屽亣瀹氫負 WITH NOCHECK銆?BR>銆銆 銆銆WITH CHECK 鍜?WITH NOCHECK 瀛愬彞涓嶈兘鐢ㄤ簬 PRIMARY KEY 鍜?UNIQUE 綰︽潫銆?BR>銆銆 銆銆濡傛灉涓嶆兂鐢ㄦ柊 CHECK 鎴?FOREIGN KEY 綰︽潫瀵圭幇鏈夋暟鎹繘琛岄獙璇侊紝璇風敤 WITH NOCHECK錛岄櫎浜嗕釜鍒儏鍐碉紝涓嶅緩璁繖鏍蜂嬌鐢ㄣ傛柊綰︽潫灝嗗湪浠ュ悗鐨勬墍鏈夋洿鏂頒腑鐢熸晥銆備換浣曞湪娣誨姞綰︽潫鏃剁敱 WITH NOCHECK 鎶戝埗鐨勭害鏉熻繚瑙勯兘鍙兘瀵艱嚧灝嗘潵鐨勬洿鏂板け璐ワ紝濡傛灉榪欎簺鏇存柊鎿嶄綔瑕佹洿鏂扮殑琛屼腑鍖呭惈涓嶇鍚堢害鏉熸潯浠剁殑鏁版嵁銆?BR>銆銆 銆銆鏌ヨ浼樺寲鍣ㄤ笉鑰冭檻鐢?WITH NOCHECK 瀹氫箟鐨勭害鏉熴傚皢蹇界暐榪欎簺綰︽潫錛岀洿鍒頒嬌鐢?ALTER TABLE table CHECK CONSTRAINT ALL璇彞閲嶆柊鍚敤榪欎簺綰︽潫涓烘銆?BR>銆銆 銆銆DROP { [CONSTRAINT] constraint_name | COLUMN column_name } 銆銆 銆銆鎸囧畾浠庤〃涓垹闄?constraint_name 鎴栬?column_name銆傚鏋滃吋瀹圭駭鍒皬浜庢垨絳変簬 65錛屽皢涓嶅厑璁?DROP COLUMN銆傚彲浠ュ垪鍑哄涓垪鎴栫害鏉熴備笅闈㈢殑鍒椾笉鑳介櫎鍘伙細 銆銆 銆銆琚鍒跺垪銆?BR>銆銆 銆銆 銆銆鐢ㄥ湪绱㈠紩涓殑鍒椼?BR>銆銆 銆銆 銆銆鐢ㄥ湪 CHECK銆丗OREIGN KEY銆乁NIQUE 鎴?PRIMARY KEY 綰︽潫涓殑鍒椼?BR>銆銆 銆銆 銆銆鏈夌浉鍏寵仈鐨勯粯璁ゅ鹼紙鐢?DEFAULT 鍏抽敭瀛楀畾涔夛級鐨勫垪錛屾垨緇戝畾鍒伴粯璁ゅ璞$殑鍒椼?BR>銆銆 銆銆 銆銆緇戝畾鍒拌鍒欑殑鍒椼? 銆銆{ CHECK | NOCHECK} CONSTRAINT 銆銆 銆銆鎸囧畾鍚敤鎴栫鐢?constraint_name銆傚鏋滅鐢紝灝嗘潵鎻掑叆鎴栨洿鏂拌鍒楁椂灝嗕笉鐢ㄨ綰︽潫鏉′歡榪涜楠岃瘉銆傛閫夐」鍙兘涓?FOREIGN KEY 鍜?CHECK 綰︽潫涓璧蜂嬌鐢ㄣ? 銆銆 銆銆ALL 銆銆鎸囧畾浣跨敤 NOCHECK 閫夐」紱佺敤鎵鏈夌害鏉燂紝鎴栬呬嬌鐢?CHECK 閫夐」鍚敤鎵鏈夌害鏉熴? 銆銆{ENABLE | DISABLE} TRIGGER 銆銆 銆銆鎸囧畾鍚敤鎴栫鐢?trigger_name銆傚綋涓涓Е鍙戝櫒琚鐢ㄦ椂錛屽畠瀵硅〃鐨勫畾涔変緷鐒跺瓨鍦紱鐒惰岋紝褰撳湪琛ㄤ笂鎵ц INSERT銆乁PDATE 鎴?DELETE 璇彞鏃訛紝瑙﹀彂鍣ㄤ腑鐨勬搷浣滃皢涓嶆墽琛岋紝闄ら潪閲嶆柊鍚敤璇ヨЕ鍙戝櫒銆? 銆銆 銆銆ALL 銆銆鎸囧畾鍚敤鎴栫鐢ㄨ〃涓墍鏈夌殑瑙﹀彂鍣ㄣ?BR>銆銆 銆銆trigger_name 銆銆鎸囧畾瑕佸惎鐢ㄦ垨紱佺敤鐨勮Е鍙戝櫒鍚嶇О銆? 銆銆column_name data_type 銆銆 銆銆鏂板垪鐨勬暟鎹被鍨嬨俤ata_type 鍙互鏄換浣?Microsoft廬 SQL Server鈩?鏁版嵁綾誨瀷鎴栫敤鎴峰畾涔夋暟鎹被鍨嬨?BR>銆銆 銆銆DEFAULT 銆銆 銆銆鏄寚瀹氬垪榛樿鍊肩殑鍏抽敭瀛椼侱EFAULT 瀹氫箟鍙敤浜庝負琛ㄤ腑鐜版湁琛岀殑鏂板垪鎻愪緵鍊箋侱EFAULT 瀹氫箟涓嶈兘娣誨姞鍒板叿鏈?timestamp 鏁版嵁綾誨瀷銆両DENTITY 灞炴с佺幇鏈?DEFAULT 瀹氫箟鎴栫粦瀹氶粯璁ゅ肩殑鍒椼傚鏋滃垪宸叉湁榛樿鍊鹼紝蹇呴』闄ゅ幓鏃ч粯璁ゅ煎悗鎵嶈兘娣誨姞鏂伴粯璁ゅ箋備負鍚?SQL Server 鍏堝墠鐗堟湰淇濇寔鍏煎鎬э紝鍚?DEFAULT 璧嬩簣綰︽潫鍚嶆槸鍙兘鐨勩?BR>銆銆 銆銆IDENTITY 銆銆 銆銆鎸囧畾鏂板垪鏄爣璇嗗垪銆傚湪琛ㄤ腑娣誨姞鏂拌鏃訛紝SQL Server 涓哄垪鎻愪緵涓涓敮涓鐨勫閲忓箋傛爣璇嗗垪閫氬父涓?PRIMARY KEY 綰︽潫涓璧風敤浣滆〃鐨勫敮涓琛屾爣璇嗙銆侷DENTITY 灞炴у彲璧嬩簣 tinyint銆乻mallint銆乮nt銆乥igint銆乨ecimal(p,0) 鎴栬?numeric(p,0) 鍒椼傚浜庢瘡涓〃鍙兘鍒涘緩涓涓爣璇嗗垪銆侱EFAULT 鍏抽敭瀛楀拰緇戝畾榛樿鍊間笉鑳界敤浜庢爣璇嗗垪銆傝涔堢瀛愬拰澧為噺閮藉悓鏃舵寚瀹氾紝瑕佷箞閮戒笉鎸囧畾銆傚鏋滀簩鑰呴兘鏈寚瀹氾紝鍒欏彇榛樿鍊?(1,1)銆? 銆銆 銆銆Seed 銆銆鏄敤浜庤〃涓墍瑁呰澆鐨勭涓琛岀殑鍊箋?BR>銆銆 銆銆Increment 銆銆鏄坊鍔犲埌鍓嶄竴琛岀殑鏍囪瘑鍊肩殑澧為噺鍊箋? 銆銆NOT FOR REPLICATION 銆銆 銆銆鎸囧畾褰撳鍒剁櫥褰曪紙濡?sqlrepl錛夊悜琛ㄤ腑鎻掑叆鏁版嵁鏃訛紝涓嶅己鍒?IDENTITY 灞炴с備篃鍙綰︽潫鎸囧畾 NOT FOR REPLICATION銆傚綋澶嶅埗鐧誨綍鍚戣〃涓彃鍏ユ暟鎹椂錛屼笉媯鏌ョ害鏉熸潯浠躲?BR>銆銆 銆銆CONSTRAINT 銆銆 銆銆鎸囧畾 PRIMARY KEY銆乁NIQUE銆丗OREIGN KEY 鎴?CHECK 綰︽潫鐨勫紑濮嬶紝鎴栬呮寚瀹?DEFAULT 瀹氫箟鐨勫紑濮嬨?BR>銆銆 銆銆constrain_name 銆銆 銆銆鏄柊綰︽潫銆傜害鏉熺殑鍚嶇О蹇呴』絎﹀悎鏍囪瘑絎﹁鍒欙紝浣嗗叾鍚嶇О鐨勯瀛楃涓嶈兘涓?#銆傚鏋滄病鏈夋彁渚?constraint_name錛岀害鏉熶嬌鐢ㄧ郴緇熺敓鎴愮殑鍚嶇О銆?BR>銆銆 銆銆PRIMARY KEY 銆銆 銆銆鏄氳繃鍞竴绱㈠紩瀵圭粰瀹氱殑涓鍒楁垨澶氬垪寮哄埗瀹炰綋瀹屾暣鎬х殑綰︽潫銆傚姣忎釜琛ㄥ彧鑳藉垱寤轟竴涓?PRIMARY KEY 綰︽潫銆?BR>銆銆 銆銆UNIQUE 銆銆 銆銆鏄氳繃鍞竴绱㈠紩涓虹粰瀹氱殑涓鍒楁垨澶氬垪鎻愪緵瀹炰綋瀹屾暣鎬х殑綰︽潫銆?BR>銆銆 銆銆CLUSTERED | NONCLUSTERED 銆銆 銆銆鎸囧畾涓?PRIMARY KEY 鎴?UNIQUE 綰︽潫鍒涘緩鑱氶泦鎴栭潪鑱氶泦绱㈠紩銆侾RIMARY KEY 綰︽潫榛樿涓?CLUSTERED錛沀NIQUE 綰︽潫榛樿涓?NONCLUSTERED銆?BR>銆銆 銆銆濡傛灉琛ㄤ腑宸插瓨鍦ㄨ仛闆嗙害鏉熸垨绱㈠紩錛岄偅涔堝湪 ALTER TABLE 涓氨涓嶈兘鎸囧畾 CLUSTERED銆傚鏋滆〃涓凡瀛樺湪鑱氶泦綰︽潫鎴栫儲寮曪紝PRIMARY KEY 綰︽潫榛樿涓?NONCLUSTERED銆?BR>銆銆 銆銆WITH FILLFACTOR = fillfactor 銆銆 銆銆鎸囧畾 SQL Server 瀛樺偍绱㈠紩鏁版嵁鏃舵瘡涓儲寮曢〉鐨勫厖婊$▼搴︺傜敤鎴鋒寚瀹氱殑 fillfactor 鍙栧艱寖鍥翠粠 1 鍒?100銆傚鏋滄病鏈夋寚瀹氾紝閭d箞榛樿鍊間負 0銆傚垱寤虹儲寮曟椂錛宖illfactor 鍊艱秺浣庯紝涓嶅繀鍒嗛厤鏂扮┖闂村嵆鍙坊鍔犵殑鏂扮儲寮曟潯鐩殑鍙敤絀洪棿灝辮秺澶氥?BR>銆銆 銆銆ON {filegroup | DEFAULT} 銆銆 銆銆鎸囧畾涓虹害鏉熷垱寤虹殑绱㈠紩鐨勫瓨鍌ㄤ綅緗傚鏋滄寚瀹氫簡 filegroup錛岀儲寮曞皢鍦ㄨ鏂囦歡緇勫唴鍒涘緩銆傚鏋滄寚瀹氫簡 DEFAULT錛岀儲寮曞皢鍦ㄩ粯璁ゆ枃浠剁粍鍐呭垱寤恒傚鏋滄湭鎸囧畾 ON錛岀儲寮曞皢鍦ㄨ〃鎵鍦ㄧ殑鏂囦歡緇勫唴鍒涘緩銆傚綋涓?PRIMARY KEY 鎴?UNIQUE 綰︽潫娣誨姞鑱氶泦绱㈠紩鏃訛紝濡傛灉鎸囧畾浜?ON錛岄偅涔堝垱寤鴻仛闆嗙儲寮曟椂鏁翠釜琛ㄩ兘灝嗙Щ鍒版寚瀹氱殑鏂囦歡緇勪腑銆?BR>銆銆 銆銆鍦ㄨ繖閲岋紝DEFAULT 涓嶆槸涓涓叧閿瓧銆侱EFAULT 鏄粯璁ゆ枃浠剁粍鐨勬爣璇嗙錛屽繀欏葷敤絎﹀彿鐣屽畾錛屽 ON "DEFAULT" 鎴?ON [DEFAULT]銆?BR>銆銆 銆銆FOREIGN KEY...REFERENCES 銆銆 銆銆鏄負鍒椾腑鏁版嵁鎻愪緵寮曠敤瀹屾暣鎬х殑綰︽潫銆侳OREIGN KEY 綰︽潫瑕佹眰鍒椾腑鐨勬瘡涓煎湪琚紩鐢ㄨ〃鐨勬寚瀹氬垪涓兘瀛樺湪銆?BR>銆銆 銆銆ref_table 銆銆 銆銆鏄?FOREIGN KEY 綰︽潫鎵寮曠敤鐨勮〃銆?BR>銆銆 銆銆ref_column 銆銆 銆銆鏄柊 FOREIGN KEY 綰︽潫鎵寮曠敤鐨勪竴鍒楁垨澶氬垪錛堢疆浜庢嫭鍙蜂腑錛夈?BR>銆銆 銆銆ON DELETE {CASCADE | NO ACTION} 銆銆 銆銆鎸囧畾褰撹〃涓鏇存敼鐨勮鍏鋒湁寮曠敤鍏崇郴錛屽茍涓旇琛屾墍寮曠敤鐨勮浠庣埗琛ㄤ腑鍒犻櫎鏃訛紝瑕佸琚洿鏀硅閲囧彇鐨勬搷浣溿傞粯璁よ緗負 NO ACTION銆? 銆銆 銆銆濡傛灉鎸囧畾 CASCADE錛屽垯浠庣埗琛ㄤ腑鍒犻櫎琚紩鐢ㄨ鏃訛紝涔熷皢浠庡紩鐢ㄨ〃涓垹闄ゅ紩鐢ㄨ銆傚鏋滄寚瀹?NO ACTION錛孲QL Server 灝嗕駭鐢熶竴涓敊璇茍鍥炴粴鐖惰〃涓殑琛屽垹闄ゆ搷浣溿?BR>銆銆 銆銆濡傛灉琛ㄤ腑宸插瓨鍦?ON DELETE 鐨?INSTEAD OF 瑙﹀彂鍣紝閭d箞灝變笉鑳藉畾涔?ON DELETE 鐨凜ASCADE 鎿嶄綔銆?BR>銆銆 銆銆渚嬪錛屽湪 Northwind 鏁版嵁搴撲腑錛孫rders 琛ㄥ拰 Customers 琛ㄤ箣闂存湁寮曠敤鍏崇郴銆侽rders.CustomerID 澶栭敭寮曠敤 Customers.CustomerID 涓婚敭銆?BR>銆銆 銆銆濡傛灉瀵?Customers 琛ㄧ殑鏌愯鎵ц DELETE 璇彞錛屽茍涓斾負 Orders.CustomerID 鎸囧畾 ON DELETE CASCADE 鎿嶄綔錛屽垯 SQL Server 灝嗗湪 Orders 琛ㄤ腑媯鏌ユ槸鍚︽湁涓庤鍒犻櫎鐨勮鐩稿叧鐨勪竴琛屾垨澶氳銆傚鏋滃瓨鍦ㄧ浉鍏寵錛岄偅涔?Orders 琛ㄤ腑鐨勭浉鍏寵灝嗛殢 Customers 琛ㄤ腑鐨勮寮曠敤琛屼竴鍚屽垹闄ゃ?BR>銆銆 銆銆鍙嶄箣錛屽鏋滄寚瀹?NO ACTION錛岃嫢鍦?Orders 琛ㄤ腑鑷沖皯鏈変竴琛屽紩鐢?Customers 琛ㄤ腑瑕佸垹闄ょ殑琛岋紝鍒?SQL Server 灝嗕駭鐢熶竴涓敊璇茍鍥炴粴 Customers 琛ㄤ腑鐨勫垹闄ゆ搷浣溿?BR>銆銆 銆銆ON UPDATE {CASCADE | NO ACTION} 銆銆 銆銆鎸囧畾褰撹〃涓鏇存敼鐨勮鍏鋒湁寮曠敤鍏崇郴錛屽茍涓旇琛屾墍寮曠敤鐨勮鍦ㄧ埗琛ㄤ腑鏇存柊鏃訛紝瑕佸琚洿鏀硅閲囧彇鐨勬搷浣溿傞粯璁よ緗負 NO ACTION銆? 銆銆 銆銆濡傛灉鎸囧畾 CASCADE錛屽垯鍦ㄧ埗琛ㄤ腑鏇存柊琚紩鐢ㄨ鏃訛紝涔熷皢鍦ㄥ紩鐢ㄨ〃涓洿鏂板紩鐢ㄨ銆傚鏋滄寚瀹?NO ACTION錛孲QL Server 灝嗕駭鐢熶竴涓敊璇茍鍥炴粴鐖惰〃涓殑琛屾洿鏂版搷浣溿?BR>銆銆 銆銆濡傛灉琛ㄤ腑宸插瓨鍦?ON DELETE 鐨?INSTEAD OF 瑙﹀彂鍣紝閭d箞灝變笉鑳藉畾涔?ON DELETE 鐨凜ASCADE 鎿嶄綔銆?BR>銆銆 銆銆渚嬪錛屽湪 Northwind 鏁版嵁搴撲腑錛孫rders 琛ㄥ拰 Customers 琛ㄤ箣闂存湁寮曠敤鍏崇郴銆侽rders.CustomerID 澶栭敭寮曠敤 Customers.CustomerID 涓婚敭銆?BR>銆銆 銆銆濡傛灉瀵?Customers 琛ㄧ殑鏌愯鎵ц UPDATE 璇彞錛屽茍涓斾負 Orders.CustomerID 鎸囧畾 ON UPDATE CASCADE 鎿嶄綔錛屽垯 SQL Server 灝嗗湪 Orders 琛ㄤ腑媯鏌ユ槸鍚︽湁涓庤鏇存柊琛岀浉鍏崇殑涓琛屾垨澶氳銆傚鏋滃瓨鍦ㄧ浉鍏寵錛岄偅涔?Orders 琛ㄤ腑鐨勭浉鍏寵灝嗛殢 Customers 琛ㄤ腑鐨勮寮曠敤琛屼竴鍚屾洿鏂般?BR>銆銆 銆銆鍙嶄箣錛屽鏋滄寚瀹氫簡 NO ACTION錛岃嫢鍦?Orders 琛ㄤ腑鑷沖皯瀛樺湪涓琛屽紩鐢?Customers 琛ㄤ腑瑕佹洿鏂扮殑琛岋紝閭d箞 SQL Server 灝嗗紩鍙戜竴涓敊璇茍鍥炴粴 Customers 琛ㄤ腑鐨勬洿鏂版搷浣溿?BR>銆銆 銆銆[ASC | DESC] 銆銆 銆銆鎸囧畾鍔犲叆鍒拌〃綰︽潫涓殑涓鍒楁垨澶氬垪鐨勬帓搴忔搴忋傞粯璁よ緗負 ASC銆?BR>銆銆 銆銆WITH VALUES 銆銆 銆銆鎸囧畾鍦ㄦ坊鍔犲埌鐜版湁琛岀殑鏂板垪涓瓨鍌?DEFAULT constant_expression 涓墍緇欏畾鐨勫箋傚彧鏈夊湪 ADD 鍒楀瓙鍙ヤ腑鎸囧畾浜?DEFAULT 鐨勬儏鍐典笅錛屾墠鑳戒嬌鐢?WITH VALUES銆傚鏋滆娣誨姞鐨勫垪鍏佽絀哄間笖鎸囧畾浜?WITH VALUES錛岄偅涔堝皢鍦ㄧ幇鏈夎鐨勬柊鍒椾腑瀛樺偍榛樿鍊箋傚鏋滄病鏈夋寚瀹?WITH VALUES 涓斿垪鍏佽絀哄鹼紝閭d箞灝嗗湪鐜版湁琛岀殑鏂板垪涓瓨鍌?NULL 鍊箋傚鏋滄柊鍒椾笉鍏佽絀哄鹼紝閭d箞涓嶈鏄惁鎸囧畾 WITH VALUES錛岄兘灝嗗湪鐜版湁琛岀殑鏂板垪涓瓨鍌ㄩ粯璁ゅ箋?BR>銆銆 銆銆column[,...n] 銆銆 銆銆鏄柊綰︽潫鎵鐢ㄧ殑涓鍒楁垨澶氬垪錛堢疆浜庢嫭鍙蜂腑錛夈?BR>銆銆 銆銆constant_expression 銆銆 銆銆鏄敤浣滃垪鐨勯粯璁ゅ肩殑瀛楅潰鍊箋丯ULL 鎴栬呯郴緇熷嚱鏁般?BR>銆銆 銆銆FOR column 銆銆 銆銆鎸囧畾涓庤〃綰?DEFAULT 瀹氫箟鐩稿叧鑱旂殑鍒椼?BR>銆銆 銆銆CHECK 銆銆 銆銆鏄氳繃闄愬埗鍙緭鍏ュ埌涓鍒楁垨澶氬垪涓殑鍙兘鍊煎己鍒跺煙瀹屾暣鎬х殑綰︽潫銆?BR>銆銆 銆銆logical_expression 銆銆 銆銆鏄敤浜?CHECK 綰︽潫鐨勮繑鍥?TRUE 鎴?FALSE 鐨勯昏緫琛ㄨ揪寮忋傜敤浜?CHECK 綰︽潫鐨?Logical_expression 涓嶈兘寮曠敤鍏跺畠琛紝浣嗗彲寮曠敤鍚屼竴琛ㄤ腑鍚屼竴琛岀殑鍏跺畠鍒椼?BR>銆銆 銆銆娉ㄩ噴 銆銆鑻ヨ娣誨姞鏂版暟鎹錛岃浣跨敤 INSERT 璇彞銆傝嫢瑕佸垹闄ゆ暟鎹錛岃浣跨敤 DELETE 鎴?TRUNCATE TABLE 璇彞銆傝嫢瑕佹洿鏀圭幇鏈夎涓殑鍊鹼紝璇蜂嬌鐢?UPDATE 璇彞銆?BR>銆銆 銆銆ALTER TABLE 璇彞鎸囧畾鐨勬洿鏀瑰皢绔嬪嵆瀹炵幇銆傚鏋滆繖浜涙洿鏀歸渶瑕佷慨鏀硅〃涓殑琛岋紝ALTER TABLE 灝嗘洿鏂拌繖浜涜銆侫LTER TABLE 灝嗚幏鍙栬〃涓婄殑鏋舵瀯淇敼閿侊紝浠ョ‘淇濆湪鏇存敼鏈熼棿鍏跺畠榪炴帴涓嶈兘寮曠敤璇ヨ〃錛堢敋鑷充笉鑳藉紩鐢ㄥ叾鍏冩暟鎹級銆傚琛ㄨ繘琛岀殑鏇存敼灝嗚褰曚簬鏃ュ織涓紝騫朵笖鍙互瀹屽叏鎭㈠銆傚獎鍝嶉潪甯稿ぇ鐨勮〃涓墍鏈夎鐨勬洿鏀癸紝姣斿闄ゅ幓涓鍒楁垨鑰呯敤榛樿鍊兼坊鍔?NOT NULL 鍒楋紝鍙兘闇瑕佽緝闀挎椂闂存墠鑳藉畬鎴愶紝騫朵細鐢熸垚澶ч噺鏃ュ織璁板綍銆傚鍚屽獎鍝嶅ぇ閲忚鐨?INSERT銆乁PDATE 鎴栬?DELETE 璇彞涓鏍鳳紝榪欎竴綾?ALTER TABLE 璇彞涔熷簲灝忓績浣跨敤銆?BR>銆銆 銆銆濡傛灉榪囩▼楂橀熺紦瀛樹腑瀛樺湪寮曠敤璇ヨ〃鐨勬墽琛岃鍒掞紝ALTER TABLE 浼氬皢榪欎簺鎵ц璁″垝鏍囪涓轟笅嬈℃墽琛屾椂閲嶆柊緙栬瘧銆?BR>銆銆 銆銆濡傛灉 ALTER TABLE 璇彞鎸囧畾鏇存敼鍏跺畠琛ㄦ墍寮曠敤鐨勫垪鍊鹼紝閭d箞鏍規嵁寮曠敤琛ㄤ腑 ON UPDATE 鎴栬?ON DELETE 鎵鎸囧畾鐨勬搷浣滐紝灝嗗彂鐢熶互涓嬩袱涓簨浠朵箣涓銆? 銆銆 銆銆濡傛灉鍦ㄥ紩鐢ㄨ〃涓病鏈夋寚瀹氬兼垨鎸囧畾浜?NO ACTION錛堥粯璁ゅ鹼級錛岄偅涔?ALTER TABLE 璇彞瀵艱嚧鐨勬洿鏀圭埗琛ㄤ腑琚紩鐢ㄥ垪鐨勬搷浣滃皢鍥炴粴錛屽茍涓?SQL Server 灝嗗紩鍙戜竴涓敊璇?BR>銆銆 銆銆 銆銆濡傛灉鍦ㄥ紩鐢ㄨ〃涓寚瀹氫簡 CASCADE錛岄偅涔堢敱 ALTER TABLE 璇彞瀵艱嚧鐨勫鐖惰〃鐨勬洿鏀瑰皢搴旂敤浜庣埗琛ㄥ強鍏剁浉鍏寵〃銆? 銆銆娣誨姞 sql_variant 鍒楃殑 ALTER TABLE 璇彞浼氱敓鎴愪笅鍒楄鍛婏細 銆銆 銆銆The total row size (xx) for table 'yy' exceeds the maximum number of bytes per row (8060). Rows that exceed the maximum number of bytes will not be added. 銆銆鍥犱負 sql_variant 鐨勬渶澶ч暱搴︿負 8016 涓瓧鑺傦紝鎵浠ヤ駭鐢熻璀﹀憡銆傚綋鏌?sql_variant 鍒楁墍鍚兼帴榪戞渶澶ч暱搴︽椂錛屽嵆浼氳秴榪囪闀垮害鐨勬渶澶у瓧鑺傞檺鍒躲?BR>銆銆 銆銆ALTER TABLE 璇彞瀵瑰叿鏈夋灦鏋勭粦瀹氳鍥劇殑琛ㄦ墽琛屾椂錛屾墍鍙楅檺鍒朵笌褰撳墠鍦ㄦ洿鏀瑰叿鏈夌畝鍗曠儲寮曠殑琛ㄦ椂鎵鍙楃殑闄愬埗鐩稿悓銆傛坊鍔犲垪鏄厑璁哥殑銆備絾鏄紝涓嶅厑璁稿垹闄ゆ垨鏇存敼鍙備笌鏋舵瀯緇戝畾瑙嗗浘鐨勮〃涓殑鍒椼傚鏋?ALTER TABLE 璇彞瑕佹眰鏇存敼鐢ㄥ湪鏋舵瀯緇戝畾瑙嗗浘涓殑鍒楋紝鏇存敼鎿嶄綔灝嗗け璐ワ紝騫朵笖 SQL Server 灝嗗紩鍙戜竴鏉¢敊璇俊鎭傛湁鍏?SCHEMABINDING 鍜岀儲寮曡鍥劇殑鏇村淇℃伅錛岃鍙傝 CREATE VIEW銆?BR>銆銆 銆銆鍒涘緩寮曠敤琛ㄧ殑鏋舵瀯緇戝畾瑙嗗浘涓嶄細褰卞搷鍦ㄥ熀琛ㄤ笂娣誨姞鎴栧垹闄よЕ鍙戝櫒銆?BR>銆銆 銆銆褰撻櫎鍘葷害鏉熸椂錛屼綔涓虹害鏉熺殑涓閮ㄥ垎鑰屽垱寤虹殑绱㈠紩涔熷皢闄ゅ幓銆傝岄氳繃 CREATE INDEX 鍒涘緩鐨勭儲寮曞繀欏諱嬌鐢?DROP INDEX 璇彞鏉ラ櫎鍘匯侱BCC DBREINDEX 璇彞鍙敤鏉ラ噸寤虹害鏉熷畾涔夌殑绱㈠紩閮ㄥ垎錛涜屼笉蹇呬嬌鐢?ALTER TABLE 鍏堥櫎鍘誨啀閲嶆柊娣誨姞綰︽潫銆?BR>銆銆 銆銆蹇呴』鍒犻櫎鎵鏈夊熀浜庡垪鐨勭儲寮曞拰綰︽潫鍚庯紝鎵嶈兘鍒犻櫎鍒椼?BR>銆銆 銆銆娣誨姞綰︽潫鏃訛紝鎵鏈夌幇鏈夋暟鎹兘瑕佽繘琛岀害鏉熻繚瑙勯獙璇併傚鏋滃彂鐢熻繚瑙勶紝ALTER TABLE 璇彞灝嗗け璐ュ茍榪斿洖涓涓敊璇?BR>銆銆 銆銆褰撳湪鐜版湁鍒椾笂娣誨姞鏂?PRIMARY KEY 鎴?UNIQUE 綰︽潫鏃訛紝璇ュ垪涓殑鏁版嵁蹇呴』鍞竴銆傚鏋滃瓨鍦ㄩ噸澶嶅鹼紝ALTER TABLE 璇彞灝嗗け璐ャ傚綋娣誨姞 PRIMARY KEY 鎴?UNIQUE 綰︽潫鏃訛紝WITH NOCHECK 閫夐」涓嶈搗浣滅敤銆?BR>銆銆 銆銆姣忎釜 PRIMARY KEY 鍜?UNIQUE 綰︽潫閮藉皢鐢熸垚涓涓儲寮曘俇NIQUE 鍜?PRIMARY KEY 綰︽潫鐨勬暟鐩笉鑳藉鑷磋〃涓婇潪鑱氶泦绱㈠紩鐨勬暟鐩ぇ浜?249錛岃仛闆嗙儲寮曠殑鏁扮洰澶т簬 1銆?BR>銆銆 銆銆濡傛灉瑕佹坊鍔犵殑鍒楃殑鏁版嵁綾誨瀷涓?uniqueidentifier錛岄偅涔堣鍒楀彲浠ヤ嬌鐢?NEWID() 鍑芥暟浣滀負榛樿鍊鹼紝浠ュ悜琛ㄤ腑鐜版湁琛岀殑鏂板垪鎻愪緵鍞竴鏍囪瘑絎﹀箋?BR>銆銆 銆銆SQL Server 鍦ㄥ垪瀹氫箟涓茍涓嶅己鍒朵互鐗瑰畾鐨勯『搴忔寚瀹?DEFAULT銆両DENTITY銆丷OWGUIDCOL 鎴栧垪綰︽潫銆?BR>銆銆 銆銆ALTER TABLE 鐨?ALTER COLUMN 瀛愬彞騫朵笉浼氬湪鍒椾笂緇戝畾鎴栧彇娑堢粦瀹氫換浣曡鍒欍傚繀欏誨垎鍒嬌鐢?sp_bindrule 鎴?sp_unbindrule 鏉ョ粦瀹氭垨鍙栨秷緇戝畾瑙勫垯銆?BR>銆銆 銆銆鍙皢瑙勫垯緇戝畾鍒扮敤鎴峰畾涔夋暟鎹被鍨嬨傜劧鍚?CREATE TABLE 灝嗚嚜鍔ㄥ湪浠ヨ鐢ㄦ埛瀹氫箟鏁版嵁綾誨瀷瀹氫箟鐨勫垪涓婄粦瀹氳瑙勫垯銆傚綋鐢?ALTER COLUMN 鏇存敼鍒楁暟鎹被鍨嬫椂錛屽茍涓嶄細鍙栨秷緇戝畾榪欎簺瑙勫垯銆傚師鐢ㄦ埛瀹氫箟鏁版嵁綾誨瀷涓婄殑瑙勫垯浠嶇劧緇戝畾鍦ㄨ鍒椾笂銆傚湪 ALTER COLUMN 鏇存敼浜嗗垪鐨勬暟鎹被鍨嬩箣鍚庯紝闅忓悗鎵ц鐨勪換浣曚粠璇ョ敤鎴峰畾涔夋暟鎹被鍨嬩笂鍙栨秷緇戝畾瑙勫垯鐨?sp_unbindrule 閮戒笉浼氬鑷翠粠鏇存敼浜嗘暟鎹被鍨嬬殑鍒椾笂鍙栨秷緇戝畾璇ヨ鍒欍傚鏋?ALTER COLUMN 灝嗗垪鐨勬暟鎹被鍨嬫洿鏀逛負緇戝畾浜嗚鍒欑殑鐢ㄦ埛瀹氫箟鏁版嵁綾誨瀷錛岄偅涔堢粦瀹氬埌鏂版暟鎹被鍨嬬殑瑙勫垯涓嶄細緇戝畾鍒拌鍒椼?BR>銆銆 銆銆鏉冮檺 銆銆ALTER TABLE 鏉冮檺榛樿鎺堜簣琛ㄧ殑鎵鏈夎呫乻ysadmin 鍥哄畾鏈嶅姟鍣ㄨ鑹叉垚鍛樸乨b_owner 鍜?db_ddladmin 鍥哄畾鏁版嵁搴撹鑹叉垚鍛樹笖涓嶅彲杞銆?BR>銆銆 銆銆紺轟緥 銆銆A. 鏇存敼琛ㄤ互娣誨姞鏂板垪 銆銆涓嬩緥娣誨姞涓涓厑璁哥┖鍊肩殑鍒楋紝鑰屼笖娌℃湁閫氳繃 DEFAULT 瀹氫箟鎻愪緵鍊箋傚悇琛岀殑鏂板垪涓殑鍊煎皢涓?NULL銆?BR>銆銆 銆銆CREATE TABLE doc_exa ( column_a INT) 銆銆GO 銆銆ALTER TABLE doc_exa ADD column_b VARCHAR(20) NULL 銆銆GO 銆銆EXEC sp_help doc_exa 銆銆GO 銆銆DROP TABLE doc_exa 銆銆GO 銆銆 銆銆B. 鏇存敼琛ㄤ互闄ゅ幓鍒?BR>銆銆涓嬩緥淇敼琛ㄤ互鍒犻櫎涓鍒椼?BR>銆銆 銆銆CREATE TABLE doc_exb ( column_a INT, column_b VARCHAR(20) NULL) 銆銆GO 銆銆ALTER TABLE doc_exb DROP COLUMN column_b 銆銆GO 銆銆EXEC sp_help doc_exb 銆銆GO 銆銆DROP TABLE doc_exb 銆銆GO 銆銆 銆銆C. 鏇存敼琛ㄤ互娣誨姞鍏鋒湁綰︽潫鐨勫垪 銆銆涓嬩緥鍚戣〃涓坊鍔犲叿鏈?UNIQUE 綰︽潫鐨勬柊鍒椼? 銆銆 銆銆CREATE TABLE doc_exc ( column_a INT) 銆銆GO 銆銆ALTER TABLE doc_exc ADD column_b VARCHAR(20) NULL 銆銆 CONSTRAINT exb_unique UNIQUE 銆銆GO 銆銆EXEC sp_help doc_exc 銆銆GO 銆銆DROP TABLE doc_exc 銆銆GO 銆銆 銆銆D. 鏇存敼琛ㄤ互娣誨姞鏈獙璇佺殑綰︽潫 銆銆涓嬩緥鍚戣〃涓殑鐜版湁鍒椾笂娣誨姞綰︽潫銆傝鍒椾腑瀛樺湪涓涓繚鍙嶇害鏉熺殑鍊鹼紱鍥犳錛屽埄鐢?WITH NOCHECK 鏉ラ槻姝㈠鐜版湁琛岄獙璇佺害鏉燂紝浠庤屽厑璁歌綰︽潫鐨勬坊鍔犮?BR>銆銆 銆銆CREATE TABLE doc_exd ( column_a INT) 銆銆GO 銆銆INSERT INTO doc_exd VALUES (-1) 銆銆GO 銆銆ALTER TABLE doc_exd WITH NOCHECK 銆銆ADD CONSTRAINT exd_check CHECK (column_a > 1) 銆銆GO 銆銆EXEC sp_help doc_exd 銆銆GO 銆銆DROP TABLE doc_exd 銆銆GO 銆銆 銆銆E. 鏇存敼琛ㄤ互娣誨姞澶氫釜甯︽湁綰︽潫鐨勫垪 銆銆涓嬩緥鍚戣〃涓坊鍔犲涓甫鏈夌害鏉熺殑鏂板垪銆傜涓涓柊鍒楀叿鏈?IDENTITY 灞炴э紱琛ㄤ腑姣忎竴琛岀殑鏍囪瘑鍒楅兘灝嗗叿鏈夐掑鐨勬柊鍊箋?BR>銆銆 銆銆CREATE TABLE doc_exe ( column_a INT CONSTRAINT column_a_un UNIQUE) 銆銆GO 銆銆ALTER TABLE doc_exe ADD 銆銆 銆銆/* Add a PRIMARY KEY identity column. */ 銆銆column_b INT IDENTITY 銆銆CONSTRAINT column_b_pk PRIMARY KEY, 銆銆 銆銆/* Add a column referencing another column in the same table. */ 銆銆column_c INT NULL 銆銆CONSTRAINT column_c_fk 銆銆REFERENCES doc_exe(column_a), 銆銆 銆銆/* Add a column with a constraint to enforce that */ 銆銆/* nonnull data is in a valid phone number format. */ 銆銆column_d VARCHAR(16) NULL 銆銆CONSTRAINT column_d_chk 銆銆CHECK 銆銆(column_d IS NULL OR 銆銆column_d LIKE "[0-9][0-9][0-9]-[0-9][0-9][0-9][0-9]" OR 銆銆column_d LIKE 銆銆"([0-9][0-9][0-9]) [0-9][0-9][0-9]-[0-9][0-9][0-9][0-9]"), 銆銆 銆銆/* Add a nonnull column with a default. */ 銆銆column_e DECIMAL(3,3) 銆銆CONSTRAINT column_e_default 銆銆DEFAULT .081 銆銆GO 銆銆EXEC sp_help doc_exe 銆銆GO 銆銆DROP TABLE doc_exe 銆銆GO 銆銆 銆銆F. 娣誨姞鍏鋒湁榛樿鍊肩殑鍙負絀虹殑鍒?BR>銆銆涓嬩緥娣誨姞鍙負絀虹殑銆佸叿鏈?DEFAULT 瀹氫箟鐨勫垪錛屽茍浣跨敤 WITH VALUES 涓鴻〃涓殑鍚勭幇鏈夎鎻愪緵鍊箋傚鏋滄病鏈変嬌鐢?WITH VALUES錛岄偅涔堟瘡涓琛岀殑鏂板垪涓兘灝嗗叿鏈?NULL 鍊箋?BR>銆銆 銆銆ALTER TABLE MyTable 銆銆ADD AddDate smalldatetime NULL 銆銆CONSTRAINT AddDateDflt 銆銆DEFAULT getdate() WITH VALUES 銆銆 銆銆G. 紱佺敤騫墮噸鏂板惎鐢ㄤ竴涓害鏉?BR>銆銆涓嬩緥紱佺敤鐢ㄤ簬闄愬埗鍙帴鍙楃殑钖按鏁版嵁鐨勭害鏉熴俉ITH NOCHECK CONSTRAINT 涓?ALTER TABLE 涓璧蜂嬌鐢紝浠ョ鐢ㄨ綰︽潫騫朵嬌姝e父鎯呭喌涓嬩細寮曡搗綰︽潫榪濊鐨勬彃鍏ユ搷浣滃緱浠ユ墽琛屻俉ITH CHECK CONSTRAINT 閲嶆柊鍚敤璇ョ害鏉熴?BR>銆銆 銆銆CREATE TABLE cnst_example 銆銆(id INT NOT NULL, 銆銆 name VARCHAR(10) NOT NULL, 銆銆 salary MONEY NOT NULL 銆銆 CONSTRAINT salary_cap CHECK (salary < 100000) 銆銆) 銆銆 銆銆-- Valid inserts 銆銆INSERT INTO cnst_example VALUES (1,"Joe Brown",65000) 銆銆INSERT INTO cnst_example VALUES (2,"Mary Smith",75000) 銆銆 銆銆-- This insert violates the constraint. 銆銆INSERT INTO cnst_example VALUES (3,"Pat Jones",105000) 銆銆 銆銆-- Disable the constraint and try again. 銆銆ALTER TABLE cnst_example NOCHECK CONSTRAINT salary_cap 銆銆INSERT INTO cnst_example VALUES (3,"Pat Jones",105000) 銆銆 銆銆-- Reenable the constraint and try another insert, will fail. 銆銆ALTER TABLE cnst_example CHECK CONSTRAINT salary_cap 銆銆INSERT INTO cnst_example VALUES (4,"Eric James",110000) 銆銆 銆銆H. 紱佺敤騫墮噸鏂板惎鐢ㄨЕ鍙戝櫒 銆銆涓嬩緥浣跨敤 ALTER TABLE 鐨?DISABLE TRIGGER 閫夐」鏉ョ鐢ㄨЕ鍙戝櫒錛屼互浣挎甯告儏鍐典笅浼氳繚鍙嶈Е鍙戝櫒鏉′歡鐨勬彃鍏ユ搷浣滃緱浠ユ墽琛屻傜劧鍚庝笅渚嬩嬌鐢?ENABLE TRIGGER 閲嶆柊鍚敤瑙﹀彂鍣ㄣ?BR>銆銆 銆銆CREATE TABLE trig_example 銆銆(id INT, 銆銆name VARCHAR(10), 銆銆salary MONEY) 銆銆go 銆銆-- Create the trigger. 銆銆CREATE TRIGGER trig1 ON trig_example FOR INSERT 銆銆as 銆銆IF (SELECT COUNT(*) FROM INSERTED 銆銆WHERE salary > 100000) > 0 銆銆BEGIN 銆銆print "TRIG1 Error: you attempted to insert a salary > $100,000" 銆銆ROLLBACK TRANSACTION 銆銆END 銆銆GO 銆銆-- Attempt an insert that violates the trigger. 銆銆INSERT INTO trig_example VALUES (1,"Pat Smith",100001) 銆銆GO 銆銆-- Disable the trigger. 銆銆ALTER TABLE trig_example DISABLE TRIGGER trig1 銆銆GO 銆銆-- Attempt an insert that would normally violate the trigger 銆銆INSERT INTO trig_example VALUES (2,"Chuck Jones",100001) 銆銆GO 銆銆-- Re-enable the trigger. 銆銆ALTER TABLE trig_example ENABLE TRIGGER trig1 銆銆GO 銆銆-- Attempt an insert that violates the trigger. 銆銆INSERT INTO trig_example VALUES (3,"Mary Booth",100001) 銆銆GO 銆銆 |
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鍒涘緩琛ㄧ殑璇彞涓紝鏈鍚庢繪潵涓鍙n[primary]錛岃繖鏄粈涔堟剰鎬濓紵
緲葷炕鑱旀満涓涗功銆傚湪CREATE TABLE鐨勮娉曚笅浼間箮娌℃湁鎵懼埌銆傜‖鐫澶寸毊鐪嬩笅鍘伙紝緇堜簬鏄庣櫧浜嗕竴浜涖?/P>
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鍦–REATE TABLE鐨勮娉曚腑鏈夎繖鏍蜂竴鍙ュ彲閫夎娉曢」鐩細
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濡傛灉鎸囧畾 filegroup錛屽垯琛ㄥ皢瀛樺偍鍦ㄦ寚瀹氱殑鏂囦歡緇勪腑銆傛暟鎹簱涓繀欏誨瓨鍦ㄨ鏂囦歡緇勩傚鏋滄寚瀹?DEFAULT錛屾垨鑰呮牴鏈湭鎸囧畾 ON 鍙傛暟錛屽垯琛ㄥ瓨鍌ㄥ湪榛樿鏂囦歡緇勪腑銆?/P>
錛圖EFAULT 騫朵笉鏄叧閿瓧銆侱EFAULT 鏄粯璁ゆ枃浠剁粍鐨勬爣璇嗙騫墮渶瀵瑰叾榪涜瀹氱晫錛屽 ON "DEFAULT"銆丱N [DEFAULT]銆傦級
ON [PRIMARY]鏄〃紺鴻〃鏄緩绔嬪湪涓繪枃浠剁粍涓娿侾RIMARY琛ㄧず涓繪枃浠剁粍銆傚鏋滄病鏈夋寚瀹氶粯璁ゆ枃浠剁粍錛屽垯涓繪枃浠剁粍鏄粯璁ゆ枃浠剁粍錛孫N [PRIMARY]涔熷彲浠ョ渷鐣ユ帀浜嗐?/P>
鐢辨暟鎹簱璇村紑鏉ャ侻icrosoft廬 SQL Server鈩?2000 浣跨敤涓緇勬搷浣滅郴緇熸枃浠舵槧灝勬暟鎹簱錛屼篃鍙互璇村皢鏁版嵁搴撴槧灝勫埌涓緇勬搷浣滅郴緇熸枃浠朵笂錛堢湅浣犳庝箞鐞嗚В浜嗭級銆傛暟鎹簱涓殑鎵鏈夋暟鎹拰瀵硅薄錛堝琛ㄣ佸瓨鍌ㄨ繃紼嬨佽Е鍙戝櫒鍜岃鍥撅級閮藉瓨鍌ㄥ湪鎿嶄綔緋葷粺鏂囦歡錛堟暟鎹簱鏂囦歡錛夛細涓昏鏁版嵁鏂囦歡 銆佹瑕佹暟鎹枃浠?鍜屼簨鍔℃棩蹇?鏂囦歡涓?/P>
1.涓昏鏁版嵁鏂囦歡
璇ユ枃浠跺寘鍚暟鎹簱鐨勫惎鍔ㄤ俊鎭紝騫剁敤浜庡瓨鍌ㄦ暟鎹傛槸鏁版嵁搴撶殑璧風偣錛屾寚鍚戞暟鎹簱涓枃浠剁殑鍏跺畠閮ㄥ垎銆傛瘡涓暟鎹簱閮芥湁涓涓富瑕佹暟鎹枃浠躲備富瑕佹暟鎹枃浠剁殑鎺ㄨ崘鏂囦歡鎵╁睍鍚嶆槸 .mdf銆?/P>
2.嬈¤鏁版嵁鏂囦歡
榪欎簺鏂囦歡鍚湁涓嶈兘緗簬涓昏鏁版嵁鏂囦歡涓殑鎵鏈夋暟鎹嵆鍖呭惈闄や富瑕佹暟鎹枃浠跺鐨勬墍鏈夋暟鎹枃浠躲傛湁浜涙暟鎹簱鍙兘娌℃湁嬈¤鏁版嵁鏂囦歡錛岃屾湁浜涙暟鎹簱鍒欐湁澶氫釜嬈¤鏁版嵁鏂囦歡銆傦紙濡傛灉涓繪枃浠跺彲浠ュ寘鍚暟鎹簱涓殑鎵鏈夋暟鎹紝閭d箞鏁版嵁搴撳氨涓嶉渶瑕佹瑕佹暟鎹枃浠躲傛湁浜涙暟鎹簱鍙兘瓚沖澶ф晠闇瑕佸涓瑕佹暟鎹枃浠訛紝鎴栦嬌鐢ㄤ綅浜庝笉鍚岀鐩橀┍鍔ㄥ櫒涓婄殑杈呭姪鏂囦歡灝嗘暟鎹墿灞曞埌澶氫釜紓佺洏銆傦級嬈¤鏁版嵁鏂囦歡鐨勬帹鑽愭枃浠舵墿灞曞悕鏄?.ndf銆?/P>
3.浜嬪姟鏃ュ織鏂囦歡
璇ユ暟鎹簱鐨勬棩蹇椾俊鎭傛瘡涓暟鎹簱閮藉繀欏昏嚦灝戞湁涓涓棩蹇楁枃浠躲傛棩蹇楁枃浠剁殑鎺ㄨ崘鏂囦歡鎵╁睍鍚嶆槸 .ldf銆?/P>
鏂囦歡緇?/P>
鍑轟簬鍒嗛厤鍜岀鐞嗙洰鐨勶紝鍙互灝嗘暟鎹簱鏂囦歡鍒嗘垚涓嶅悓鐨勬枃浠剁粍銆傛枃浠剁粍鏄疭QL Server 2000鏁版嵁鏂囦歡鐨勪竴縐嶉昏緫綆$悊鍗曚綅銆係QL Server涓竴涓垨澶氫釜鏂囦歡鐨勫懡鍚嶉泦鍚堬紝瀹冩瀯鎴愬垎閰嶆垨鐢ㄤ簬鏁版嵁搴撶鐞嗙殑鍗曚釜鍗曞厓銆傚湪棣栨寤烘暟鎹簱錛屾垨鑰呬互鍚庡皢鏇村鏂囦歡娣誨姞鍒版暟鎹簱鏃訛紝鍙互鍒涘緩鏂囦歡緇勩傛枃浠剁粍涓嶈兘鐙珛浜庢暟鎹簱鏂囦歡鍒涘緩銆傛枃浠剁粍鏄湪鏁版嵁搴撲腑瀵規枃浠惰繘琛屽垎緇勭殑涓縐嶇鐞嗘満鍒躲?/P>
鏈変袱縐嶇被鍨嬬殑鏂囦歡緇勶細涓昏鏂囦歡緇勫拰鐢ㄦ埛瀹氫箟鏂囦歡緇勩傦紙鍙互璇達紝鏁版嵁搴撶敱涓涓富鏂囦歡緇勫拰浠繪剰鐢ㄦ埛瀹氫箟鐨勬枃浠剁粍緇勬垚銆傦級
1.涓繪枃浠剁粍 錛圥RIMARY錛?/P>
鐢ㄦ埛瀹氫箟鏂囦歡緇?榛樿鏂囦歡緇?鍚屼負鏂囦歡緇勭殑涓縐嶇被鍨嬨?/P>
鍏跺寘鍚富瑕佹暟鎹枃浠跺拰浠諱綍娌℃湁鏄庣‘鎸囨淳緇欏叾瀹冩枃浠剁粍鐨勫叾瀹冩枃浠躲傜郴緇熻〃鐨勬墍鏈夐〉鍧囧垎閰嶅湪涓繪枃浠剁粍.
2.鐢ㄦ埛瀹氫箟鏂囦歡緇?/P>
鐢ㄦ埛瀹氫箟鏂囦歡緇勬槸鍦?CREATE DATABASE 鎴?ALTER DATABASE 璇彞涓紝浣跨敤 FILEGROUP 鍏抽敭瀛楁垨鍦?SQL Server 浼佷笟綆$悊鍣ㄥ唴鐨?灞炴?瀵硅瘽妗嗘寚瀹氱殑鏂囦歡緇勩?/P>
鍙︼細榛樿鏂囦歡緇?錛圖EFAULT 鏂囦歡緇勶級
鏂囦歡緇勭殑涓縐嶇被鍨嬶紝鍏跺寘鍚湪鍒涘緩鏃舵病鏈夋寚瀹氭枃浠剁粍鐨勬墍鏈夎〃鍜岀儲寮曠殑欏點傚湪姣忎釜鏁版嵁搴撲腑錛屾瘡嬈″彧鑳芥湁涓涓枃浠剁粍鏄粯璁ゆ枃浠剁粍銆傚鏋滄病鏈夋寚瀹氶粯璁ゆ枃浠剁粍錛屽垯榛樿鏂囦歡緇勬槸涓繪枃浠剁粍銆?鍙敤 ALTER DATABASE 璇彞鏇存敼榛樿鏂囦歡緇勩傞氳繃鏇存敼榛樿鏂囦歡緇勶紝鍒涘緩鏃舵病鏈夋寚瀹氭枃浠剁粍鐨勪換浣曞璞¢兘琚垎閰嶅埌鏂伴粯璁ゆ枃浠剁粍涓殑鏁版嵁鏂囦歡銆傜劧鑰岋紝緋葷粺瀵硅薄鍜岃〃浠嶇劧淇濈暀鍦?PRIMARY 鏂囦歡緇勫唴錛岃屼笉鏄柊榛樿鏂囦歡緇勩傦紙姣忎釜鏁版嵁搴撲腑閮芥湁涓涓枃浠剁粍浣滀負榛樿鏂囦歡緇勮繍琛屻傚綋 SQL Server 緇欏垱寤烘椂娌℃湁涓哄叾鎸囧畾鏂囦歡緇勭殑琛ㄦ垨绱㈠紩鍒嗛厤欏墊椂錛屽皢浠庨粯璁ゆ枃浠剁粍涓繘琛屽垎閰嶃備竴嬈″彧鑳芥湁涓涓枃浠剁粍浣滀負榛樿鏂囦歡緇勩俤b_owner 鍥哄畾鏁版嵁搴撹鑹叉垚鍛樺彲浠ュ皢榛樿鏂囦歡緇勪粠涓涓枃浠剁粍鍒囨崲鍒板彟涓涓傚鏋滄病鏈夋寚瀹氶粯璁ゆ枃浠剁粍錛屽垯涓繪枃浠剁粍鏄粯璁ゆ枃浠剁粍銆傦級
娉?SQL Server 2000 鍦ㄦ病鏈夋枃浠剁粍鏃朵篃鑳芥湁鏁堝湴宸ヤ綔錛屽洜姝よ澶氱郴緇熶笉闇瑕佹寚瀹氱敤鎴峰畾涔夋枃浠剁粍銆傚湪榪欑鎯呭喌涓嬶紝鎵鏈夋枃浠墮兘鍖呭惈鍦ㄤ富鏂囦歡緇勪腑錛岃屼笖 SQL Server 2000 鍙互鍦ㄦ暟鎹簱鍐呯殑浠諱綍浣嶇疆鍒嗛厤鏁版嵁銆傛枃浠剁粍涓嶆槸鍦ㄥ涓┍鍔ㄥ櫒涔嬮棿鍒嗛厤 I/O 鐨勫敮涓鏂規硶銆?/P>
闄勶細
. 涓轟粈涔堣寤虹珛鏂囦歡緇?/P>
寤虹珛鏂囦歡緇勬湁涓や釜鐩殑銆?/P>
q 涓鏄彲浠ユ洿濂藉湴鍒嗛厤鍜岀鐞嗗瓨鍌ㄧ┖闂達紝閫氳繃鎺у埗鍦ㄧ壒瀹氱鐩橀┍鍔ㄥ櫒涓婃斁緗暟鎹拰绱㈠紩鏉ユ彁楂樻暟鎹簱鐨勬ц兘銆?/P>
q 浜屾槸鐢變簬鎿嶄綔緋葷粺瀵圭墿鐞嗘枃浠剁殑澶у皬榪涜浜嗛檺鍒訛紝鎵浠ュ綋鏌愪釜紓佺洏涓婄殑鏁版嵁鏂囦歡瓚呰繃鍗曚釜鏂囦歡鍏佽鐨勬渶澶у兼椂錛屽彲浠ヤ嬌鐢ㄦ枃浠剁粍涓瓨
璐湪鍏朵粬椹卞姩鍣ㄤ笂鐨勬暟鎹枃浠剁戶緇墿鍏呭瓨鍌ㄧ┖闂淬?/P>
. 鏁版嵁鏂囦歡鍜屾枃浠剁粍鐨勪嬌鐢ㄨ鍒?/P>
SQL Server 2000涓殑鏁版嵁鏂囦歡鍜屾枃浠剁粍鐨勪嬌鐢ㄨ鍒欏寘鎷細
q 鏁版嵁鏂囦歡鎴栨枃浠剁粍涓嶈兘鐢變竴涓互涓婄殑鏁版嵁搴撲嬌鐢ㄣ?/P>
q 鏁版嵁鏂囦歡鍙兘鏄竴涓枃浠剁粍鐨勬垚鍛樸?/P>
q 鏁版嵁鏂囦歡鍜屾棩蹇楁枃浠朵笉鑳藉睘浜庡悓涓鏂囦歡鎴栨枃浠剁粍銆?/P>
q 鏃ュ織鏂囦歡涓嶈兘灞炰簬浠諱綍鏂囦歡緇勩?/P>
q 鍙湁鏂囦歡緇勪腑鐨勬墍鏈夋暟鎹枃浠墮兘娌℃湁絀洪棿浜嗭紝鏂囦歡緇勭殑鏂囦歡鎵嶄細鑷姩澧為暱銆?/P>
. 鏂囦歡緇勭殑宸ヤ綔鍘熺悊
鏂囦歡緇勫緇勫唴鐨勬墍鏈夋枃浠墮兘浣跨敤鎸夋瘮渚嬪~鍏呯瓥鐣ャ傚綋灝嗘暟鎹啓鍏ユ枃浠剁粍鏃訛紝SQL Server 2000鏍規嵁鏂囦歡涓殑鍙敤絀洪棿閲忓皢涓瀹氭瘮渚嬬殑鏁版嵁鍐欏叆鏂?/P>
浠剁粍鐨勬瘡涓枃浠訛紝鑰屼笉鏄皢鎵鏈夌殑鏁版嵁鍏堝啓婊$涓涓枃浠訛紝鎺ョ潃鍐嶅啓鍏ヤ笅涓涓枃浠躲備緥濡傦紝濡傛灉鏂囦歡1鏈?00MB鐨勫彲鐢ㄧ┖闂達紝鏂囦歡2鏈?00MB鐨勫彲
鐢ㄧ┖闂達紝鍒欎粠鏂囦歡1涓垎閰嶄竴涓洏鍖猴紝浠庢枃浠?涓垎閰嶄袱涓洏鍖猴紝渚濇綾繪帹銆傝繖鏍鳳紝涓や釜鏂囦歡鍑犱箮鍚屾椂濉弧銆?/P>
涓鏃︽枃浠剁粍鍐呯殑鎵鏈夋枃浠跺凡婊★紝SQL Server 2000灝辮嚜鍔ㄥ湴閲囩敤寰幆鏂瑰紡涓嬈℃墿灞曚竴涓枃浠訛紝浠ュ綰蟲洿澶氱殑鏁版嵁錛堝亣瀹氭暟鎹簱璁劇疆涓鴻嚜鍔ㄥ闀匡級
銆備緥濡傦紝鏌愪釜鏂囦歡緇勭敱3涓枃浠剁粍鎴愶紝瀹冧滑閮借緗負鑷姩澧為暱銆傚綋鏂囦歡緇勪腑鐨勬墍鏈夋枃浠剁殑絀洪棿鐢ㄥ畬鏃訛紝鍙墿灞曠涓涓枃浠躲傚綋絎竴涓枃浠跺凡婊★紝
涓嶈兘灝嗘洿澶氱殑鏁版嵁鍐欏叆璇ユ枃浠剁粍鏃訛紝鎵╁睍絎簩涓枃浠躲傚綋絎簩涓枃浠跺凡婊★紝涓嶈兘灝嗘洿澶氱殑鏁版嵁鍐欏叆璇ユ枃浠剁粍鏃訛紝鎵╁睍絎?涓枃浠躲傚鏋滅3涓枃
浠跺凡婊★紝涓嶈兘灝嗘洿澶氱殑鏁版嵁鍐欏叆璇ユ枃浠剁粍錛岄偅涔堝啀嬈℃墿灞曠涓涓枃浠訛紝浠ユ綾繪帹銆?/P>
姝f椂鐢變簬鏂囦歡緇勭殑榪欑鐗規э紝鍏佽璺ㄥ涓鐩樸佸涓鐩樻帶鍒跺櫒鎴?RAID錛堝粔浠風鐩樺啑浣欓樀鍒楋級緋葷粺鍒涘緩鏁版嵁搴擄紝鍙彁楂樻暟鎹簱鎬ц兘銆備緥濡傦紝濡?/P>
鏋滆綆楁満涓湁4涓鐩橈紝閭d箞鍙互鍒涘緩涓涓敱3涓暟鎹枃浠跺拰涓涓棩蹇楁枃浠剁粍鎴愮殑鏁版嵁搴擄紝姣忎釜紓佺洏涓婃斁緗竴涓枃浠躲傚湪瀵規暟鎹繘琛岃闂椂錛屽洓
涓/鍐欑澶村彲浠ュ悓鏃跺茍琛屽湴璁塊棶鏁版嵁錛屼粠鑰屽姞閫熸暟鎹簱鎿嶄綔銆?/P>
鍙﹀錛屾枃浠跺拰鏂囦歡緇勫厑璁告暟鎹竷灞錛屽彲浠ュ湪鐗瑰畾鐨勬枃浠剁粍涓垱寤鴻〃銆傚洜涓虹壒瀹氳〃鐨勬墍鏈夎緭鍏?杈撳嚭閮藉彲浠ュ畾鍚戝埌鐗瑰畾鐨勭鐩橈紝鎵浠ユц兘寰椾互鏀瑰杽
銆備緥濡傦紝鍙互灝嗘渶甯哥敤鐨勮〃鏀懼湪涓涓枃浠剁粍涓殑涓涓枃浠朵腑錛岃鏂囦歡緇勪綅浜庝竴涓鐩樹笂錛涜屽皢鏁版嵁搴撲腑鍏跺畠鐨勪笉甯歌闂殑琛ㄦ斁鍦ㄥ彟涓涓枃浠剁粍
涓殑鍏跺畠鏂囦歡涓紝璇ユ枃浠剁粍浣嶄簬絎簩涓鐩樹笂銆?/P>
. 濡備綍浣跨敤鏂囦歡緇勭殑寤鴻
q 澶у鏁版暟鎹簱鍦ㄥ彧鏈夊崟涓暟鎹枃浠跺拰鍗曚釜浜嬪姟鏃ュ織鏂囦歡鐨勬儏鍐典笅鍙互寰堝ソ鍦拌繍琛屻?/P>
q 濡傛灉浣跨敤澶氫釜鏂囦歡錛岃涓洪檮鍔犳枃浠跺垱寤虹浜屼釜鏂囦歡緇勶紝騫跺皢鍏惰緗負榛樿鏂囦歡緇勩傝繖鏍鳳紝涓繪枃浠跺皢浠呭寘鍚郴緇熻〃鍜屽璞°?/P>
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