聽
聽聽聽 涓轟簡鐞嗚В榪欎簺渚嬪瓙錛屾垜浠厛澶嶄範涓€涓婦ATEDIFF鍜孌ATEADD鍑芥暟銆侱ATEDIFF鍑芥暟璁＄畻涓や釜鏃ユ湡涔嬮棿鐨勫皬鏃躲€佸ぉ銆佸懆銆佹湀銆佸勾絳夋椂闂撮棿闅旀€繪暟銆侱ATEADD鍑芥暟璁＄畻涓€涓棩鏈熼€氳繃緇欐椂闂撮棿闅斿姞鍑忔潵鑾峰緱涓€涓柊鐨勬棩鏈熴€傝浜嗚В鏇村鐨凞ATEDIFF鍜孌ATEADD鍑芥暟浠ュ強鏃墮棿闂撮殧鍙互闃呰寰蔣鑱旀満甯姪銆偮?
聽
聽聽聽 浣跨敤DATEDIFF鍜孌ATEADD鍑芥暟鏉ヨ綆楁棩鏈燂紝鍜屾湰鏉ヤ粠褰撳墠鏃ユ湡杞崲鍒頒綘闇€瑕佺殑鏃ユ湡鐨勮€冭檻鏂規硶鏈夌偣涓嶅悓銆備綘蹇呴』浠庢椂闂撮棿闅旇繖涓柟闈㈡潵鑰冭檻銆傛瘮濡傦紝浠庡綋鍓嶆棩鏈熷埌浣犺寰楀埌鐨勬棩鏈熶箣闂存湁澶氬皯鏃墮棿闂撮殧錛屾垨鑰咃紝浠庝粖澶╁埌鏌愪竴澶╋紙姣斿1900-1-1錛変箣闂存湁澶氬皯鏃墮棿闂撮殧錛岀瓑絳夈€傜悊瑙ｆ€庢牱鐫€鐪間簬鏃墮棿闂撮殧鏈夊姪浜庝綘杞繪澗鐨勭悊瑙ｆ垜鐨勪笉鍚岀殑鏃ユ湡璁＄畻渚嬪瓙銆偮?
聽
涓€涓湀鐨勭涓€澶┞?
聽
聽聽聽 絎竴涓緥瀛愶紝鎴戝皢鍛婅瘔浣犲浣曚粠褰撳墠鏃ユ湡鍘昏繖涓湀鐨勬渶鍚庝竴澶┿€傝娉ㄦ剰錛氳繖涓緥瀛愪互鍙婅繖綃囨枃绔犱腑鐨勫叾浠栦緥瀛愰兘灝嗗彧浣跨敤DATEDIFF鍜孌ATEADD鍑芥暟鏉ヨ綆楁垜浠兂瑕佺殑鏃ユ湡銆傛瘡涓€涓緥瀛愰兘灝嗛€氳繃璁＄畻浣嗗墠鐨勬椂闂撮棿闅旓紝鐒跺悗榪涜鍔犲噺鏉ュ緱鍒版兂瑕佽綆楃殑鏃ユ湡銆偮?
聽
聽聽聽 榪欐槸璁＄畻涓€涓湀絎竴澶╃殑SQL聽 鑴氭湰錛毬?
聽聽聽 SELECT聽 DATEADD(mm,聽 DATEDIFF(mm,0,getdate()),聽 0)聽
聽
聽聽聽 鎴戜滑鎶婅繖涓鍙ュ垎寮€鏉ョ湅鐪嬪畠鏄浣曞伐浣滅殑銆傛渶鏍稿績鐨勫嚱鏁版槸getdate()錛屽ぇ閮ㄥ垎浜洪兘鐭ラ亾榪欎釜鏄繑鍥炲綋鍓嶇殑鏃ユ湡鍜屾椂闂寸殑鍑芥暟銆備笅涓€涓墽琛岀殑鍑芥暟DATEDIFF(mm,0,getdate())鏄綆楀綋鍓嶆棩鏈熷拰鈥?900-01-01聽 00:00:00.000鈥濊繖涓棩鏈熶箣闂寸殑鏈堟暟銆傝浣忥細鏃舵湡鍜屾椂闂村彉閲忓拰姣涓€鏍鋒槸浠庘€?900-01-01聽 00:00:00.000鈥濆紑濮嬭綆楃殑銆傝繖灝辨槸涓轟粈涔堜綘鍙互鍦―ATEDIFF鍑芥暟涓寚瀹氱涓€涓椂闂磋〃杈懼紡涓衡€?鈥濄€備笅涓€涓嚱鏁版槸DATEADD錛屽鍔犲綋鍓嶆棩鏈熷埌鈥?900-01-01鈥濈殑鏈堟暟銆傞€氳繃澧炲姞棰勫畾涔夌殑鏃ユ湡鈥?900-01-01鈥濆拰褰撳墠鏃ユ湡鐨勬湀鏁幫紝鎴戜滑鍙互鑾峰緱榪欎釜鏈堢殑絎竴澶┿€傚彟澶栵紝璁＄畻鍑烘潵鐨勬棩鏈熺殑鏃墮棿閮ㄥ垎灝嗕細鏄€?0:00:00.000鈥濄€偮?
聽
聽聽聽 榪欎釜璁＄畻鐨勬妧宸ф槸鍏堣綆楀綋鍓嶆棩鏈熷埌鈥?900-01-01鈥濈殑鏃墮棿闂撮殧鏁幫紝鐒跺悗鎶婂畠鍔犲埌鈥?900-01-01鈥濅笂鏉ヨ幏寰楃壒孌婄殑鏃ユ湡錛岃繖涓妧宸у彲浠ョ敤鏉ヨ綆楀緢澶氫笉鍚岀殑鏃ユ湡銆備笅涓€涓緥瀛愪篃鏄敤榪欎釜鎶€宸т粠褰撳墠鏃ユ湡鏉ヤ駭鐢熶笉鍚岀殑鏃ユ湡銆偮?
聽
聽聽
鏈懆鐨勬槦鏈熶竴聽
聽
聽聽聽聽 榪欓噷鎴戞槸鐢ㄥ懆(wk)鐨勬椂闂撮棿闅旀潵璁＄畻鍝竴澶╂槸鏈懆鐨勬槦鏈熶竴銆偮?
聽
聽聽聽聽 SELECT聽 DATEADD(wk,聽 DATEDIFF(wk,0,getdate()),聽 0)聽
聽
涓€騫寸殑絎竴澶┞?
聽
聽聽聽聽 鐜板湪鐢ㄥ勾(yy)鐨勬椂闂撮棿闅旀潵鏄劇ず榪欎竴騫寸殑絎竴澶┿€偮?
聽
聽聽聽聽 SELECT聽 DATEADD(yy,聽 DATEDIFF(yy,0,getdate()),聽 0)聽
聽
瀛ｅ害鐨勭涓€澶┞?
聽
聽聽聽聽 鍋囧浣犺璁＄畻榪欎釜瀛ｅ害鐨勭涓€澶╋紝榪欎釜渚嬪瓙鍛婅瘔浣犺濡備綍鍋氥€偮?
聽
聽聽聽聽 SELECT聽 DATEADD(qq,聽 DATEDIFF(qq,0,getdate()),聽 0)聽
聽
褰撳ぉ鐨勫崐澶溌?
聽
聽聽聽聽 鏇劇粡闇€瑕侀€氳繃getdate()鍑芥暟涓轟簡榪斿洖鏃墮棿鍊兼埅鎺夋椂闂撮儴鍒嗭紝灝變細鑰冭檻鍒板綋鍓嶆棩鏈熸槸涓嶆槸鍦ㄥ崐澶溿€傚亣濡傝繖鏍鳳紝榪欎釜渚嬪瓙浣跨敤DATEDIFF鍜孌ATEADD鍑芥暟鏉ヨ幏寰楀崐澶滅殑鏃墮棿鐐廣€偮?
聽
聽聽聽聽 SELECT聽 DATEADD(dd,聽 DATEDIFF(dd,0,getdate()),聽 0)聽
聽
娣卞叆DATEDIFF鍜孌ATEADD鍑芥暟璁＄畻聽
聽
聽聽聽聽 浣犲彲浠ユ槑鐧斤紝閫氳繃浣跨敤綆€鍗曠殑DATEDIFF鍜孌ATEADD鍑芥暟璁＄畻錛屼綘鍙互鍙戠幇寰堝涓嶅悓鐨勫彲鑳芥湁鎰忎箟鐨勬棩鏈熴€偮?
聽
聽聽聽聽 鐩墠涓烘鐨勬墍鏈変緥瀛愬彧鏄粎浠呰綆楀綋鍓嶇殑鏃墮棿鍜屸€?900-01-01鈥濅箣闂寸殑鏃墮棿闂撮殧鏁伴噺錛岀劧鍚庢妸瀹冨姞鍒扳€?900-01-01鈥濈殑鏃墮棿闂撮殧涓婃潵璁＄畻鍑烘棩鏈熴€傚亣瀹氫綘淇敼鏃墮棿闂撮殧鐨勬暟閲忥紝鎴栬€呬嬌鐢ㄤ笉鍚岀殑鏃墮棿闂撮殧鏉ヨ皟鐢―ATEADD鍑芥暟錛屾垨鑰呭噺鍘繪椂闂撮棿闅旇€屼笉鏄鍔狅紝閭ｄ箞閫氳繃榪欎簺灝忕殑璋冩暣浣犲彲浠ュ彂鐜板拰澶氫笉鍚岀殑鏃ユ湡銆偮?
聽
聽聽聽聽 榪欓噷鏈夊洓涓緥瀛愪嬌鐢ㄥ彟澶栦竴涓狣ATEADD鍑芥暟鏉ヨ綆楁渶鍚庝竴澶╂潵鍒嗗埆鏇挎崲DATEADD鍑芥暟鍓嶅悗涓や釜鏃墮棿闂撮殧銆偮?
聽
涓婁釜鏈堢殑鏈€鍚庝竴澶┞?
聽
聽聽聽聽 榪欐槸涓€涓綆椾笂涓湀鏈€鍚庝竴澶╃殑渚嬪瓙銆傚畠閫氳繃浠庝竴涓湀鐨勬渶鍚庝竴澶╄繖涓緥瀛愪笂鍑忓幓3姣鏉ヨ幏寰椼€傛湁涓€鐐硅璁頒綇錛屽湪Sql聽 Server涓椂闂存槸綺劇‘鍒?姣銆傝繖灝辨槸涓轟粈涔堟垜闇€瑕佸噺鍘?姣鏉ヨ幏寰楁垜瑕佺殑鏃ユ湡鍜屾椂闂淬€偮?
聽
聽聽聽聽 SELECT聽 dateadd(ms,-3,DATEADD(mm,聽 DATEDIFF(mm,0,getdate()),聽 0))聽
聽
聽聽聽聽 璁＄畻鍑烘潵鐨勬棩鏈熺殑鏃墮棿閮ㄥ垎鍖呭惈浜嗕竴涓猄ql聽 Server鍙互璁板綍鐨勪竴澶╃殑鏈€鍚庢椂鍒?鈥?3:59:59:997鈥?鐨勬椂闂淬€偮?
聽
鍘誨勾鐨勬渶鍚庝竴澶┞?
聽
聽聽聽聽 榪炴帴涓婇潰鐨勪緥瀛愶紝涓轟簡瑕佸緱鍒板幓騫寸殑鏈€鍚庝竴澶╋紝浣犻渶瑕佸湪浠婂勾鐨勭涓€澶╀笂鍑忓幓3姣銆偮?
聽
聽聽聽聽 SELECT聽 dateadd(ms,-3,DATEADD(yy,聽 DATEDIFF(yy,0,getdate()),聽 0))聽
聽
鏈湀鐨勬渶鍚庝竴澶┞?
聽
聽聽聽聽 鐜板湪錛屼負浜嗚幏寰楁湰鏈堢殑鏈€鍚庝竴澶╋紝鎴戦渶瑕佺◢寰慨鏀逛竴涓嬭幏寰椾笂涓湀鐨勬渶鍚庝竴澶╃殑璇彞銆備慨鏀歸渶瑕佺粰鐢―ATEDIFF姣旇緝褰撳墠鏃ユ湡鍜屸€?900-01-01鈥濊繑鍥炵殑鏃墮棿闂撮殧涓婂姞1銆傞€氳繃鍔?涓湀錛屾垜璁＄畻鍑轟笅涓湀鐨勭涓€澶╋紝鐒跺悗鍑忓幓3姣錛岃繖鏍峰氨璁＄畻鍑轟簡榪欎釜鏈堢殑鏈€鍚庝竴澶┿€傝繖鏄綆楁湰鏈堟渶鍚庝竴澶╃殑SQL鑴氭湰銆偮?
聽
聽聽聽聽 SELECT聽 dateadd(ms,-3,DATEADD(mm,聽 DATEDIFF(m,0,getdate())+1,聽 0))聽
聽
鏈勾鐨勬渶鍚庝竴澶┞?
聽
聽聽聽聽 浣犵幇鍦ㄥ簲璇ユ帉鎻¤繖涓殑鍋氭硶錛岃繖鏄綆楁湰騫存渶鍚庝竴澶╄剼鏈?
聽
聽聽聽聽 SELECT聽 dateadd(ms,-3,DATEADD(yy,聽 DATEDIFF(yy,0,getdate())+1,聽 0))
聽
鏈湀鐨勭涓€涓槦鏈熶竴聽
聽
聽聽聽聽 濂戒簡錛岀幇鍦ㄦ槸鏈€鍚庝竴涓緥瀛愩€傝繖閲屾垜瑕佽綆楄繖涓湀鐨勭涓€涓槦鏈熶竴銆傝繖鏄綆楃殑鑴氭湰銆偮?
聽
聽聽聽聽 select聽 DATEADD(wk,聽 DATEDIFF(wk,0,聽
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 dateadd(dd,6-datepart(day,getdate()),getdate())),聽 0)聽
聽
聽聽聽聽 鍦ㄨ繖涓緥瀛愰噷錛屾垜浣跨敤浜嗏€滄湰鍛ㄧ殑鏄熸湡涓€鈥濈殑鑴氭湰錛屽茍浣滀簡涓€鐐圭偣淇敼銆備慨鏀圭殑閮ㄥ垎鏄妸鍘熸潵鑴氭湰涓€済etdate()鈥濋儴鍒嗘浛鎹㈡垚璁＄畻鏈湀鐨勭6澶╋紝鍦ㄨ綆椾腑鐢ㄦ湰鏈堢殑絎?澶╂潵鏇挎崲褰撳墠鏃ユ湡浣垮緱璁＄畻鍙互鑾峰緱榪欎釜鏈堢殑絎竴涓槦鏈熶竴銆偮?
聽
鎬葷粨聽
聽
聽聽聽聽 鎴戝笇鏈涜繖浜涗緥瀛愬彲浠ュ湪浣犵敤DATEADD鍜孌ATEDIFF鍑芥暟璁＄畻鏃ユ湡鏃剁粰浣犱竴鐐瑰惎鍙戙€傞€氳繃浣跨敤榪欎釜璁＄畻鏃ユ湡鐨勬椂闂撮棿闅旂殑鏁板鏂規硶錛屾垜鍙戠幇涓轟簡鏄劇ず涓や釜鏃ユ湡涔嬮棿闂撮殧鐨勬湁鐢ㄥ巻娉曟槸鏈変環鍊肩殑銆傛敞鎰忥紝榪欏彧鏄綆楀嚭榪欎簺鏃ユ湡鐨勪竴縐嶆柟娉曘€傝鐗㈣錛岃繕鏈夊緢澶氭柟娉曞彲浠ュ緱鍒扮浉鍚岀殑璁＄畻緇撴灉銆傚亣濡備綘鏈夊叾浠栫殑鏂規硶錛岄偅寰堜笉閿欙紝瑕佹槸浣犳病鏈夛紝鎴戝笇鏈涜繖浜涗緥瀛愬彲浠ョ粰浣犱竴浜涘惎鍙戯紝褰撲綘瑕佺敤DATEADD鍜孌ATEDIFF鍑芥暟璁＄畻浣犵▼搴忓彲鑳借鐢ㄥ埌鐨勬棩鏈熸椂銆偮?
聽
---------------------------------------------------------------聽
闄勫綍錛屽叾浠栨棩鏈熷鐞嗘柟娉暵?
聽
1)鍘繪帀鏃跺垎縐捖?
declare聽 @聽 datetime聽
set聽 @聽 =聽 getdate()聽 --'2003-7-1聽 10:00:00'聽
SELECT聽 @,DATEADD(day,聽 DATEDIFF(day,0,@),聽 0)聽
聽
2錛夋樉紺烘槦鏈熷嚑聽
select聽 datename(weekday,getdate())聽聽聽
聽
3錛夊浣曞彇寰楁煇涓湀鐨勫ぉ鏁奧?
declare聽 @m聽 int聽
set聽 @m=2聽 --鏈堜喚聽
select聽聽聽 datediff(day,'2003-'+cast(@m聽 as聽 varchar)+'-15'聽 ,'2003-'+cast(@m+1聽聽聽 as聽 varchar)+'-15')聽
鍙﹀錛屽彇寰楁湰鏈堝ぉ鏁奧?
select聽聽聽 datediff(day,cast(month(GetDate())聽 as聽 varchar)+'-'+cast(month(GetDate())聽 as聽 varchar)+'-15'聽 ,cast(month(GetDate())聽 as聽 varchar)+'-'+cast(month(GetDate())+1聽聽聽 as聽 varchar)+'-15')聽
鎴栬€呬嬌鐢ㄨ綆楁湰鏈堢殑鏈€鍚庝竴澶╃殑鑴氭湰錛岀劧鍚庣敤DAY鍑芥暟鍖烘渶鍚庝竴澶┞?
SELECT聽 Day(dateadd(ms,-3,DATEADD(mm,聽 DATEDIFF(m,0,getdate())+1,聽 0)))聽
聽
4錛夊垽鏂槸鍚﹂棸騫達細聽
SELECT聽 case聽 day(dateadd(mm,聽 2,聽 dateadd(ms,-3,DATEADD(yy,聽 DATEDIFF(yy,0,getdate()),聽 0))))聽 when聽 28聽 then聽 '騫沖勾'聽 else聽 '闂板勾'聽 end聽
鎴栬€吢?
select聽 case聽 datediff(day,datename(year,getdate())+'-02-01',dateadd(mm,1,datename(year,getdate())+'-02-01'))聽
when聽 28聽 then聽 '騫沖勾'聽 else聽 '闂板勾'聽 end聽
聽
5錛変竴涓搴﹀灝戝ぉ聽
declare聽 @m聽 tinyint,@time聽 smalldatetime聽
select聽 @m=month(getdate())聽
select聽 @m=case聽 when聽 @m聽 between聽 1聽 and聽 3聽 then聽 1聽
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 when聽 @m聽 between聽 4聽 and聽 6聽 then聽 4聽
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 when聽 @m聽 between聽 7聽 and聽 9聽 then聽 7聽
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 else聽 10聽 end聽
select聽 @time=datename(year,getdate())+'-'+convert(varchar(10),@m)+'-01'聽
select聽 datediff(day,@time,dateadd(mm,3,@time))
zhaofei1394 2006-03-31 11:48 鍙戣〃璇勮
]]>