mysql中timestamp和date如何转换为字符串我是要用日期做模糊查询的. 关于SQL模糊查询日期时间的方法
mysql \u4e2d timestamp \u548cdate\u7c7b\u578b\u80fd\u4e0d\u80fd\u6bd4\u8f83datetime
1. \u5360\u75288\u4e2a\u5b57\u8282
2. \u5141\u8bb8\u4e3a\u7a7a\u503c\uff0c\u53ef\u4ee5\u81ea\u5b9a\u4e49\u503c\uff0c\u7cfb\u7edf\u4e0d\u4f1a\u81ea\u52a8\u4fee\u6539\u5176\u503c\u3002
3. \u5b9e\u9645\u683c\u5f0f\u50a8\u5b58\uff08Just stores what you have stored and retrieves the same thing which you have stored.\uff09
4. \u4e0e\u65f6\u533a\u65e0\u5173\uff08It has nothing to deal with the TIMEZONE and Conversion.\uff09
5. \u4e0d\u53ef\u4ee5\u8bbe\u5b9a\u9ed8\u8ba4\u503c\uff0c\u6240\u4ee5\u5728\u4e0d\u5141\u8bb8\u4e3a\u7a7a\u503c\u7684\u60c5\u51b5\u4e0b\uff0c\u5fc5\u987b\u624b\u52a8\u6307\u5b9adatetime\u5b57\u6bb5\u7684\u503c\u624d\u53ef\u4ee5\u6210\u529f\u63d2\u5165\u6570\u636e\u3002
6. \u53ef\u4ee5\u5728\u6307\u5b9adatetime\u5b57\u6bb5\u7684\u503c\u7684\u65f6\u5019\u4f7f\u7528now()\u53d8\u91cf\u6765\u81ea\u52a8\u63d2\u5165\u7cfb\u7edf\u7684\u5f53\u524d\u65f6\u95f4\u3002
\u7ed3\u8bba\uff1adatetime\u7c7b\u578b\u9002\u5408\u7528\u6765\u8bb0\u5f55\u6570\u636e\u7684\u539f\u59cb\u7684\u521b\u5efa\u65f6\u95f4\uff0c\u56e0\u4e3a\u65e0\u8bba\u4f60\u600e\u4e48\u66f4\u6539\u8bb0\u5f55\u4e2d\u5176\u4ed6\u5b57\u6bb5\u7684\u503c\uff0cdatetime\u5b57\u6bb5\u7684\u503c\u90fd\u4e0d\u4f1a\u6539\u53d8\uff0c\u9664\u975e\u4f60\u624b\u52a8\u66f4\u6539\u5b83\u3002
timestamp
1. \u5360\u75284\u4e2a\u5b57\u8282
2. \u5141\u8bb8\u4e3a\u7a7a\u503c\uff0c\u4f46\u662f\u4e0d\u53ef\u4ee5\u81ea\u5b9a\u4e49\u503c\uff0c\u6240\u4ee5\u4e3a\u7a7a\u503c\u65f6\u6ca1\u6709\u4efb\u4f55\u610f\u4e49\u3002
3. TIMESTAMP\u503c\u4e0d\u80fd\u65e9\u4e8e1970\u6216\u665a\u4e8e2037\u3002\u8fd9\u8bf4\u660e\u4e00\u4e2a\u65e5\u671f\uff0c\u4f8b\u5982'1968-01-01'\uff0c\u867d\u7136\u5bf9\u4e8eDATETIME\u6216DATE\u503c\u662f\u6709\u6548\u7684\uff0c\u4f46\u5bf9\u4e8eTIMESTAMP\u503c\u5374\u65e0\u6548\uff0c\u5982\u679c\u5206\u914d\u7ed9\u8fd9\u6837\u4e00\u4e2a\u5bf9\u8c61\u5c06\u88ab\u8f6c\u6362\u4e3a0\u3002
4.\u503c\u4ee5UTC\u683c\u5f0f\u4fdd\u5b58\uff08 it stores the number of milliseconds\uff09
5.\u65f6\u533a\u8f6c\u5316 \uff0c\u5b58\u50a8\u65f6\u5bf9\u5f53\u524d\u7684\u65f6\u533a\u8fdb\u884c\u8f6c\u6362\uff0c\u68c0\u7d22\u65f6\u518d\u8f6c\u6362\u56de\u5f53\u524d\u7684\u65f6\u533a\u3002
6. \u9ed8\u8ba4\u503c\u4e3aCURRENT_TIMESTAMP()\uff0c\u5176\u5b9e\u4e5f\u5c31\u662f\u5f53\u524d\u7684\u7cfb\u7edf\u65f6\u95f4\u3002
7. \u6570\u636e\u5e93\u4f1a\u81ea\u52a8\u4fee\u6539\u5176\u503c\uff0c\u6240\u4ee5\u5728\u63d2\u5165\u8bb0\u5f55\u65f6\u4e0d\u9700\u8981\u6307\u5b9atimestamp\u5b57\u6bb5\u7684\u540d\u79f0\u548ctimestamp\u5b57\u6bb5\u7684\u503c\uff0c\u4f60\u53ea\u9700\u8981\u5728\u8bbe\u8ba1\u8868\u7684\u65f6\u5019\u6dfb\u52a0\u4e00\u4e2atimestamp\u5b57\u6bb5\u5373\u53ef\uff0c\u63d2\u5165\u540e\u8be5\u5b57\u6bb5\u7684\u503c\u4f1a\u81ea\u52a8\u53d8\u4e3a\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4\u3002
8. \u4ee5\u540e\u4efb\u4f55\u65f6\u95f4\u4fee\u6539\u8868\u4e2d\u7684\u8bb0\u5f55\u65f6\uff0c\u5bf9\u5e94\u8bb0\u5f55\u7684timestamp\u503c\u4f1a\u81ea\u52a8\u88ab\u66f4\u65b0\u4e3a\u5f53\u524d\u7684\u7cfb\u7edf\u65f6\u95f4\u3002
\u7ed3\u8bba\uff1atimestamp\u7c7b\u578b\u9002\u5408\u7528\u6765\u8bb0\u5f55\u6570\u636e\u7684\u6700\u540e\u4fee\u6539\u65f6\u95f4\uff0c\u56e0\u4e3a\u53ea\u8981\u4f60\u66f4\u6539\u4e86\u8bb0\u5f55\u4e2d\u5176\u4ed6\u5b57\u6bb5\u7684\u503c\uff0ctimestamp\u5b57\u6bb5\u7684\u503c\u90fd\u4f1a\u88ab\u81ea\u52a8\u66f4\u65b0\u3002
\u770b\u5b8c\u8fd9\u4e2a\u6bd4\u8f83\u4f60\u5c31\u77e5\u9053\u7528\u54ea\u4e2a\u597d\u5566
\u6211\u4eec\u516c\u53f8\u4e00\u822c\u7528datatime,\u53ef\u63a7\u6027\u6bd4\u8f83\u5f3a
\u6709\u4ee5\u4e0b\u4e09\u79cd\u65b9\u6cd5\uff1a
1\u3001Convert\u8f6c\u6210String\uff0c\u5728\u7528Like\u67e5\u8be2
select * from table1 where convert(varchar,yourtime,120) like '2017-06-30%'
2\u3001Between
select * from table1 where yourtime between '2017-06-30 0:00:00' and '2017-06-30 24:59:59'";
3\u3001datediff()\u51fd\u6570
select * from table1 where datediff(day,yourtime,'2017-06-30')=0
\u6269\u5c55\u8d44\u6599\uff1a\u6eda\u4e0e\u4e0a\u8ff0\u65e5\u671f\u683c\u5f0f\u7684like\u6a21\u7cca\u67e5\u8be2\u7684\u6ce8\u610f\u4e8b\u9879
1\u3001select * from T where sendTime like '%2007_12_%' \u53ef\u4ee5\u67e5\u8be22007\u5e7412\u6708\u7684\u6240\u6709\u8bb0\u5f55
\u5982\u679clike\u6761\u4ef6\u6539\u4e3a'%2007-12-%' ,'%2007_12_3%' ,\u6216'%2007_12_30%' \u90fd\u67e5\u4e0d\u51fa\u6570\u636e\u3002
2\u3001select * from T where sendTime like '%12_30%' \u53ef\u4ee5\u67e5\u8be212\u670830\u65e5\u7684\u6240\u6709\u8bb0\u5f55
\u5982\u679clike\u6761\u4ef6\u6539\u4e3a'%07_12_30%' \u4e5f\u67e5\u4e0d\u51fa\u6570\u636e\u3002
select * from tb where date_format(ct,'%Y-%m-%d') like '2016-08%';
FROM_UNIXTIME(time,"%Y%m%d")
绛旓細TIMESTAMP鍒楃敤浜嶪NSERT鎴朥PDATE鎿嶄綔鏃惰褰曟棩鏈熷拰鏃堕棿銆傚鏋滀綘涓嶅垎閰嶄竴涓硷紝琛ㄤ腑鐨勭涓涓猅IMESTAMP鍒楄嚜鍔ㄨ缃负鏈杩戞搷浣滅殑鏃ユ湡鍜屾椂闂淬備篃鍙互閫氳繃鍒嗛厤涓涓狽ULL鍊硷紝灏員IMESTAMP鍒楄缃负褰撳墠鐨勬棩鏈熷拰鏃堕棿銆俆IMESTAMP鍊艰繑鍥炲悗鏄剧ず涓衡橸YYY-MM-DD HH:MM:SS鈥欐牸寮忕殑瀛楃涓诧紝鏄剧ず瀹藉害鍥哄畾涓19涓瓧绗︺傚鏋滄兂瑕佽幏...
绛旓細鍒涘缓涓や釜 TIMESTAMP 瀛楁鏃跺叾涓竴涓け璐ョ殑鍘熷洜鍙兘鏄敱浜 TIMESTAMP 瀛楁鐨勯粯璁ら暱搴︿笉澶熼暱瀵艰嚧鐨勩傚湪 MySQL 涓锛孴IMESTAMP 绫诲瀷榛樿鍗犵敤 4 瀛楄妭锛岃寖鍥存槸浠 '1970-01-01 00:00:01' 鍒 '2038-01-19 03:14:07'锛屽鏋滀袱涓 TIMESTAMP 瀛楁鐨勫肩浉宸秴杩囪繖涓寖鍥达紝灏变細鍑虹幇鍒涘缓澶辫触鐨勬儏鍐点傚浜庤繖绉嶆儏...
绛旓細鍦MySQL涓锛屽鏋滀綘甯屾湜鏃堕棿鎴鑳界簿纭埌姣锛屽彲浠ヤ娇鐢╜DATETIME`绫诲瀷骞舵寚瀹氬叾绮惧害銆傚湪MySQL 5.6.4鍙婁互鍚庣殑鐗堟湰涓紝`DATETIME`銆乣TIMESTAMP`鍜宍TIME`绫诲瀷閮藉彲浠ュ寘鍚竴涓彲閫夌殑灏忔暟绉掗儴鍒嗭紝瀹冪殑绮惧害鍙互绮剧‘鍒板井绉掞紙鐧句竾鍒嗕箣涓绉掞級銆備緥濡傦紝濡傛灉浣犲笇鏈涘皢鏌愪釜瀛楁鐨勭簿搴﹁缃负姣锛堝崈鍒嗕箣涓绉掞級锛屽彲浠ュ儚涓...
绛旓細DATE 绫诲瀷鍙敤浜庨渶瑕佷竴涓棩鏈熷艰屼笉闇瑕佹椂闂撮儴鍒嗘椂銆MySQL 浠 'YYYY-MM-DD' 鏍煎紡妫绱笌鏄剧ず DATE 鍊笺傛敮鎸佺殑鑼冨洿鏄 '1000-01-01' 鍒 '9999-12-31'銆TIMESTAMP 鍒楃被鍨嬫彁渚涗簡涓绉嶇被鍨嬶紝閫氳繃瀹冧綘鍙互浠ュ綋鍓嶆搷浣滅殑鏃ユ湡鍜屾椂闂磋嚜鍔ㄥ湴鏍囪 Insert 鎴朥pdate 鎿嶄綔銆傚鏋滀竴寮犺〃涓湁澶氫釜 TIMESTAMP 鍒楋紝鍙...
绛旓細DATETIME銆丏ATE鍜TIMESTAMP锛岄櫎浜咲ATE鐢ㄦ潵琛ㄧず涓涓笉甯︽椂鍒嗙鐨勬槸鏃ユ湡锛屽彟澶栦袱涓兘甯︽椂鍒嗙銆俆IMESTAMP杩樺彲浠ョ簿纭埌姣銆1銆乀IMESTAMP鍒楀繀椤绘湁榛樿鍊硷紝榛樿鍊煎彲浠ヤ负鈥0000-00-00 00:00:00鈥濓紝浣嗕笉鑳戒负null銆2銆乀IMESTAMP鍒椾笉鍙互璁剧疆鍊硷紝鍙兘鐢辨暟鎹簱鑷姩鍘讳慨鏀广3銆佷竴涓〃鍙互瀛樺湪澶氫釜TIMESTAMP鍒楋紝...
绛旓細datetime鍖呭惈姣锛岃鏍煎紡鍖栬緭鍑猴紝鐢╢ffDateTime t = DateTime.Now;Console.WriteLine(t.ToString("yyyy-MM-dd hh:mm:ss fff"));娉細mysql閲岄潰鐨刣atetime绫诲瀷鐨勭簿纭害鏄彲浠ュ埌1/ 10 ^ 6 绉掔殑锛屾煇浜涘鎴风锛堝navicat for mysql锛夌殑鏄剧ず缁忓父鍙兘鐪嬪埌绮剧‘鍒扮锛屽叾瀹炴槸璁捐琛ㄧ殑鏃跺欑殑閰嶇疆闂銆
绛旓細mysql涓甯哥敤鐨勬椂闂存牸寮忚浆鎹㈠嚱鏁版湁锛1銆乫rom_unixtime锛timestamp锛宖ormat锛夛紱2銆乽nix_timestamp锛坉ate锛夛紱3銆乨ate_format锛坉ate锛宖ormat锛夈傚弬鑰冧粙缁嶏細1銆乫rom_unixtime(timestamp, format)鍏朵腑timestamp涓篿nt鍨嬫椂闂达紝姣斿14290450779锛沠ormat涓鸿浆鎹㈢殑鏍煎紡锛屾墍鍖呭惈鐨勬牸寮忎粙缁嶅涓嬶細M 鏈堝悕瀛(January鈥︹...
绛旓細鍦mysql涓璽imestamp鏁版嵁绫诲瀷鏄竴涓瘮杈冪壒娈婄殑鏁版嵁绫诲瀷锛屼粬鍙互鑷姩鍦ㄤ綘涓嶄娇鐢ㄧ▼搴忔洿鏂版儏鍐典笅鍙浣犳洿鏂颁簡璁板綍timestamp浼氳嚜鍔ㄦ洿鏂版椂闂 閫氬父琛ㄤ腑浼氭湁涓涓狢reate date 鍒涘缓鏃ユ湡鐨勫瓧娈碉紝鍏跺畠鏁版嵁搴撳潎鏈夐粯璁ゅ肩殑閫夐」銆侻ySQL涔熸湁榛樿鍊紅imestamp锛屼絾鍦∕ySQL涓紝涓嶄粎鏄彃鍏ュ氨绠楁槸淇敼涔熶細鏇存柊timestamp鐨勫硷紒杩欐牱涓...
绛旓細Mysql涓缁忓父鐢ㄦ潵瀛樺偍鏃ユ湡鐨勬暟鎹被鍨嬫湁涓夌锛欴ate銆丏atetime銆Timestamp銆傘1銆慏ate鏁版嵁绫诲瀷锛氱敤鏉ュ瓨鍌ㄦ病鏈夋椂闂寸殑鏃ユ湡銆侻ysql鑾峰彇鍜屾樉绀鸿繖涓被鍨嬬殑鏍煎紡涓衡淵YYY-MM-DD鈥濄傛敮鎸佺殑鏃堕棿鑼冨洿涓衡1000-00-00鈥濆埌鈥9999-12-31鈥濄傘2銆慏atetime绫诲瀷锛氬瓨鍌ㄦ棦鏈夋棩鏈熷張鏈夋椂闂寸殑鏁版嵁銆傚瓨鍌ㄥ拰鏄剧ず鐨勬牸寮忎负 鈥淵YYY-MM...
绛旓細TIMESTAMP鍒椾笉鍙互璁剧疆鍊硷紝鍙兘鐢辨暟鎹簱鑷姩鍘讳慨鏀广備竴涓〃鍙互瀛樺湪澶氫釜TIMESTAMP鍒楋紝浣嗗彧鏈変竴涓垪浼氭牴鎹暟鎹洿鏂拌屾敼鍙樹负鏁版嵁搴撶郴缁熷綋鍓嶅笺傚洜姝わ紝涓涓〃涓湁澶氫釜TIMESTAMP鍒楁槸娌℃湁鎰忎箟锛屽疄闄呬笂涓涓〃鍙瀹氫竴涓猅IMESTAMP鍒椼MySQL鏄竴涓叧绯诲瀷鏁版嵁搴撶鐞嗙郴缁燂紝鐢辩憺鍏窶ySQL AB 鍏徃寮鍙戯紝鐩墠灞炰簬 Oracle...
