{"id":110620,"date":"2026-09-29T05:32:45","date_gmt":"2026-09-28T21:32:45","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/110620.html"},"modified":"2026-09-29T05:32:45","modified_gmt":"2026-09-28T21:32:45","slug":"maxcompute%e4%b8%ad%e6%97%a5%e6%9c%9f%e4%b8%8e%e6%97%b6%e9%97%b4%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/110620.html","title":{"rendered":"MaxCompute\u4e2d\u65e5\u671f\u4e0e\u65f6\u95f4\u51fd\u6570"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u4e00\u3001\u5206\u7c7b\u603b\u89c8<\/li>\n<li>\n<ul>\n<li>1\u3001\u51fd\u6570\u5206\u7c7b<\/li>\n<li>2\u3001\u5168\u90e8\u51fd\u6570<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001\u5f53\u524d\u65f6\u95f4 \/ 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DATETIME<\/td>\n<\/tr>\n<tr>\n<td>1\u3001\u5f53\u524d\u65f6\u95f4 \/ \u65f6\u533a\u7c7b<\/td>\n<td>NOW<\/td>\n<td>\u83b7\u53d6\u5f53\u524d\u7cfb\u7edf\u65e5\u671f\u4e0e\u65f6\u95f4&#xff0c;\u8fd4\u56de DATETIME<\/td>\n<\/tr>\n<tr>\n<td>2\u3001\u65e5\u671f\u52a0\u51cf\u7c7b<\/td>\n<td>ADD_MONTHS<\/td>\n<td>\u65e5\u671f\u589e\u52a0\u6216\u51cf\u5c11\u6307\u5b9a\u6708\u6570<\/td>\n<\/tr>\n<tr>\n<td>2\u3001\u65e5\u671f\u52a0\u51cf\u7c7b<\/td>\n<td>DATE_ADD<\/td>\n<td>\u65e5\u671f\u589e\u52a0\u6216\u51cf\u5c11\u6307\u5b9a\u5929\u6570<\/td>\n<\/tr>\n<tr>\n<td>2\u3001\u65e5\u671f\u52a0\u51cf\u7c7b<\/td>\n<td>DATE_SUB<\/td>\n<td>\u65e5\u671f\u51cf\u5c11\u6216\u589e\u52a0\u6307\u5b9a\u5929\u6570<\/td>\n<\/tr>\n<tr>\n<td>2\u3001\u65e5\u671f\u52a0\u51cf\u7c7b<\/td>\n<td>DATEADD<\/td>\n<td>\u6309\u5e74\u3001\u6708\u3001\u65e5\u3001\u65f6\u3001\u5206\u3001\u79d2\u4fee\u6539\u65e5\u671f<\/td>\n<\/tr>\n<tr>\n<td>2\u3001\u65e5\u671f\u52a0\u51cf\u7c7b<\/td>\n<td>TIME_ADD<\/td>\n<td>TIME 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\u5fae\u79d2\u503c\u8f6c\u65f6\u95f4\u5b57\u7b26\u4e32<\/td>\n<\/tr>\n<tr>\n<td>4\u3001\u683c\u5f0f\u8f6c\u6362\u7c7b<\/td>\n<td>TO_CHAR<\/td>\n<td>\u65e5\u671f\u8f6c\u6307\u5b9a\u683c\u5f0f\u5b57\u7b26\u4e32<\/td>\n<\/tr>\n<tr>\n<td>4\u3001\u683c\u5f0f\u8f6c\u6362\u7c7b<\/td>\n<td>TO_DATE<\/td>\n<td>\u6307\u5b9a\u683c\u5f0f\u5b57\u7b26\u4e32\u8f6c\u65e5\u671f<\/td>\n<\/tr>\n<tr>\n<td>5\u3001\u65f6\u95f4\u6233\u8f6c\u6362\u7c7b<\/td>\n<td>FROM_UNIXTIME<\/td>\n<td>UNIX \u79d2\u65f6\u95f4\u6233\u8f6c\u65e5\u671f<\/td>\n<\/tr>\n<tr>\n<td>5\u3001\u65f6\u95f4\u6233\u8f6c\u6362\u7c7b<\/td>\n<td>TO_MILLIS<\/td>\n<td>\u65e5\u671f\u8f6c UNIX \u6beb\u79d2\u65f6\u95f4\u6233<\/td>\n<\/tr>\n<tr>\n<td>5\u3001\u65f6\u95f4\u6233\u8f6c\u6362\u7c7b<\/td>\n<td>TO_TIME<\/td>\n<td>\u6784\u9020\u6216\u8f6c\u6362\u4e3a\u5fae\u79d2\u8868\u793a\u7684 TIME<\/td>\n<\/tr>\n<tr>\n<td>5\u3001\u65f6\u95f4\u6233\u8f6c\u6362\u7c7b<\/td>\n<td>TO_TIMESTAMP_NTZ<\/td>\n<td>\u8f6c\u6362\u4e3a\u65e0\u65f6\u533a TIMESTAMP_NTZ<\/td>\n<\/tr>\n<tr>\n<td>5\u3001\u65f6\u95f4\u6233\u8f6c\u6362\u7c7b<\/td>\n<td>UNIX_TIMESTAMP<\/td>\n<td>\u65e5\u671f\u8f6c UNIX \u79d2\u65f6\u95f4\u6233<\/td>\n<\/tr>\n<tr>\n<td>6\u3001\u65f6\u533a\u8f6c\u6362\u7c7b<\/td>\n<td>FROM_UTC_TIMESTAMP<\/td>\n<td>UTC \u65f6\u95f4\u8f6c\u6362\u5230\u6307\u5b9a\u65f6\u533a<\/td>\n<\/tr>\n<tr>\n<td>6\u3001\u65f6\u533a\u8f6c\u6362\u7c7b<\/td>\n<td>TO_UTC_TIMESTAMP<\/td>\n<td>\u6307\u5b9a\u65f6\u533a\u65f6\u95f4\u8f6c\u6362\u4e3a UTC<\/td>\n<\/tr>\n<tr>\n<td>7\u3001\u65e5\u671f \/ \u65f6\u95f4\u622a\u65ad\u7c7b<\/td>\n<td>DATETRUNC<\/td>\n<td>\u65e5\u671f\u6309\u5e74\u3001\u6708\u3001\u65e5\u7b49\u7c92\u5ea6\u622a\u65ad<\/td>\n<\/tr>\n<tr>\n<td>7\u3001\u65e5\u671f \/ \u65f6\u95f4\u622a\u65ad\u7c7b<\/td>\n<td>TIME_TRUNC<\/td>\n<td>TIME \u6309\u5c0f\u65f6\u3001\u5206\u949f\u3001\u79d2\u7b49\u7c92\u5ea6\u622a\u65ad<\/td>\n<\/tr>\n<tr>\n<td>7\u3001\u65e5\u671f \/ \u65f6\u95f4\u622a\u65ad\u7c7b<\/td>\n<td>TRUNC_TIME<\/td>\n<td>\u65e5\u671f\u6216\u65f6\u95f4\u6309\u7c92\u5ea6\u622a\u65ad\u540e\u8fd4\u56de\u5b57\u7b26\u4e32<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>DATEPART<\/td>\n<td>\u6309\u6307\u5b9a\u5355\u4f4d\u63d0\u53d6\u65e5\u671f\u5b57\u6bb5<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>DAY<\/td>\n<td>\u63d0\u53d6\u65e5\u671f\u4e2d\u7684\u65e5<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>DAYOFMONTH<\/td>\n<td>\u63d0\u53d6\u6708\u4e2d\u7684\u7b2c\u51e0\u5929<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>DAYOFWEEK<\/td>\n<td>\u63d0\u53d6\u661f\u671f\u503c<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>DAYOFYEAR<\/td>\n<td>\u63d0\u53d6\u5e74\u4e2d\u7684\u7b2c\u51e0\u5929<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>EXTRACT<\/td>\n<td>\u4ece\u65e5\u671f \/ \u65f6\u95f4\u6233\u63d0\u53d6\u6307\u5b9a\u90e8\u5206<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>HOUR<\/td>\n<td>\u63d0\u53d6\u5c0f\u65f6<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>ISOYEAR<\/td>\n<td>\u63d0\u53d6 ISO 8601 \u5e74\u4efd<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>MINUTE<\/td>\n<td>\u63d0\u53d6\u5206\u949f<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>MONTH<\/td>\n<td>\u63d0\u53d6\u6708\u4efd<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>QUARTER<\/td>\n<td>\u63d0\u53d6\u5b63\u5ea6<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>SECOND<\/td>\n<td>\u63d0\u53d6\u79d2<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>WEEKDAY<\/td>\n<td>\u63d0\u53d6\u5f53\u524d\u5468\u7b2c\u51e0\u5929<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>WEEKOFYEAR<\/td>\n<td>\u63d0\u53d6\u5f53\u5e74\u7b2c\u51e0\u5468<\/td>\n<\/tr>\n<tr>\n<td>8\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/td>\n<td>YEAR<\/td>\n<td>\u63d0\u53d6\u5e74\u4efd<\/td>\n<\/tr>\n<tr>\n<td>9\u3001\u6708\u672b \/ \u661f\u671f\u8ba1\u7b97\u7c7b<\/td>\n<td>LAST_DAY<\/td>\n<td>\u83b7\u53d6\u6240\u5728\u6708\u6700\u540e\u4e00\u5929&#xff0c;\u8fd4\u56de\u5b57\u7b26\u4e32<\/td>\n<\/tr>\n<tr>\n<td>9\u3001\u6708\u672b \/ \u661f\u671f\u8ba1\u7b97\u7c7b<\/td>\n<td>LASTDAY<\/td>\n<td>\u83b7\u53d6\u6240\u5728\u6708\u6700\u540e\u4e00\u5929&#xff0c;\u8fd4\u56de DATETIME<\/td>\n<\/tr>\n<tr>\n<td>9\u3001\u6708\u672b \/ \u661f\u671f\u8ba1\u7b97\u7c7b<\/td>\n<td>NEXT_DAY<\/td>\n<td>\u83b7\u53d6\u6307\u5b9a\u65e5\u671f\u4e4b\u540e\u7684\u4e0b\u4e00\u4e2a\u661f\u671f\u51e0<\/td>\n<\/tr>\n<tr>\n<td>10\u3001\u65e5\u671f\u6821\u9a8c\u7c7b<\/td>\n<td>ISDATE<\/td>\n<td>\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u80fd\u6309\u6307\u5b9a\u683c\u5f0f\u8f6c\u6210\u65e5\u671f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>\u4e8c\u3001\u5f53\u524d\u65f6\u95f4 \/ \u65f6\u533a\u7c7b<\/h2>\n<table>\n<tr>\u51fd\u6570\u529f\u80fd<\/tr>\n<tbody>\n<tr>\n<td>CURRENT_TIMESTAMP<\/td>\n<td>\u5f53\u524d TIMESTAMP<\/td>\n<\/tr>\n<tr>\n<td>CURRENT_TIMEZONE<\/td>\n<td>\u5f53\u524d\u7cfb\u7edf\u65f6\u533a<\/td>\n<\/tr>\n<tr>\n<td>GETDATE<\/td>\n<td>\u5f53\u524d DATETIME<\/td>\n<\/tr>\n<tr>\n<td>NOW<\/td>\n<td>\u5f53\u524d DATETIME<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1\u3001\u5b9a\u4e49<\/h3>\n<ul>\n<li>CURRENT_TIMESTAMP&#xff1a;\u8fd4\u56de\u5f53\u524d TIMESTAMP \u7c7b\u578b\u65f6\u95f4\u6233\u3002<\/li>\n<li>CURRENT_TIMEZONE&#xff1a;\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u7684\u65f6\u533a\u4fe1\u606f\u3002<\/li>\n<li>GETDATE&#xff1a;\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4&#xff0c;\u7c7b\u578b\u4e3a DATETIME\u3002<\/li>\n<li>NOW&#xff1a;\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u65e5\u671f\u4e0e\u65f6\u95f4&#xff0c;\u7c7b\u578b\u4e3a DATETIME\u3002<\/li>\n<\/ul>\n<h3>2\u3001\u533a\u522b<\/h3>\n<table>\n<tr>\u5bf9\u6bd4\u533a\u522b<\/tr>\n<tbody>\n<tr>\n<td>CURRENT_TIMESTAMP<\/td>\n<td>\u8fd4\u56de TIMESTAMP<\/td>\n<\/tr>\n<tr>\n<td>GETDATE \/ NOW<\/td>\n<td>\u8fd4\u56de DATETIME<\/td>\n<\/tr>\n<tr>\n<td>CURRENT_TIMEZONE<\/td>\n<td>\u8fd4\u56de\u65f6\u533a\u5b57\u7b26\u4e32&#xff0c;\u4e0d\u8fd4\u56de\u65e5\u671f<\/td>\n<\/tr>\n<tr>\n<td>GETDATE vs NOW<\/td>\n<td>\u90fd\u83b7\u53d6\u5f53\u524d\u65f6\u95f4&#xff1b;NOW \u8fd4\u56de\u683c\u5f0f\u5e26\u6beb\u79d2\u90e8\u5206<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>MaxCompute \u4e2d GETDATE() \u5728\u540c\u4e00\u4e2a SQL \u6267\u884c\u671f\u95f4\u8fd4\u56de\u56fa\u5b9a\u503c\u3002<\/p>\n<h3>3\u3001\u7b80\u5355\u8bb0\u5fc6<\/h3>\n<p>CURRENT_TIMESTAMP &#061; \u5f53\u524d\u65f6\u95f4\u6233\u3002 CURRENT_TIMEZONE &#061; \u5f53\u524d\u65f6\u533a\u3002 GETDATE \/ NOW &#061; \u5f53\u524d\u65e5\u671f\u65f6\u95f4\u3002<\/p>\n<h3>4\u3001\u6848\u4f8b<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;\u5f53\u524d TIMESTAMP&#xff0c;\u4f8b\u5982 2026-09-27 16:30:00.123<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> <span class=\"token keyword\">CURRENT_TIMESTAMP<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;Asia\/Shanghai<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> CURRENT_TIMEZONE<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;\u5f53\u524d\u7cfb\u7edf DATETIME<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> GETDATE<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;\u5f53\u524d\u7cfb\u7edf DATETIME&#xff0c;\u5e26\u6beb\u79d2<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> <span class=\"token function\">NOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h2>\u4e09\u3001\u65e5\u671f\u52a0\u51cf\u7c7b<\/h2>\n<table>\n<tr>\u51fd\u6570\u529f\u80fd<\/tr>\n<tbody>\n<tr>\n<td>ADD_MONTHS<\/td>\n<td>\u52a0\u51cf\u6708<\/td>\n<\/tr>\n<tr>\n<td>DATE_ADD<\/td>\n<td>\u52a0\u51cf\u5929<\/td>\n<\/tr>\n<tr>\n<td>DATE_SUB<\/td>\n<td>\u51cf\u5929<\/td>\n<\/tr>\n<tr>\n<td>DATEADD<\/td>\n<td>\u6309\u6307\u5b9a\u5355\u4f4d\u52a0\u51cf<\/td>\n<\/tr>\n<tr>\n<td>TIME_ADD<\/td>\n<td>TIME \u589e\u52a0<\/td>\n<\/tr>\n<tr>\n<td>TIME_SUB<\/td>\n<td>TIME \u51cf\u5c11<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1\u3001\u5b9a\u4e49<\/h3>\n<ul>\n<li>ADD_MONTHS&#xff1a;\u4e13\u95e8\u5904\u7406\u6708\u4efd\u52a0\u51cf\u3002<\/li>\n<li>DATE_ADD&#xff1a;\u4e13\u95e8\u5904\u7406\u5929\u6570\u52a0\u51cf\u3002<\/li>\n<li>DATE_SUB&#xff1a;\u4e0e DATE_ADD \u589e\u51cf\u903b\u8f91\u76f8\u53cd\u3002<\/li>\n<li>DATEADD&#xff1a;\u53ef\u4ee5\u6309\u5e74\u3001\u6708\u3001\u65e5\u3001\u65f6\u3001\u5206\u3001\u79d2\u4fee\u6539\u65e5\u671f\u3002<\/li>\n<li>TIME_ADD&#xff1a;\u5bf9 TIME \u65f6\u95f4\u589e\u52a0\u6307\u5b9a\u5e45\u5ea6\u3002<\/li>\n<li>TIME_SUB&#xff1a;\u5bf9 TIME \u65f6\u95f4\u51cf\u5c11\u6307\u5b9a\u5e45\u5ea6\u3002<\/li>\n<\/ul>\n<h3>2\u3001\u533a\u522b<\/h3>\n<table>\n<tr>\u5bf9\u6bd4\u533a\u522b<\/tr>\n<tbody>\n<tr>\n<td>ADD_MONTHS<\/td>\n<td>\u4e13\u95e8\u5904\u7406\u6708<\/td>\n<\/tr>\n<tr>\n<td>DATE_ADD \/ DATE_SUB<\/td>\n<td>\u53ea\u5904\u7406\u5929<\/td>\n<\/tr>\n<tr>\n<td>DATEADD<\/td>\n<td>\u652f\u6301\u5e74\u3001\u6708\u3001\u65e5\u3001\u65f6\u3001\u5206\u3001\u79d2<\/td>\n<\/tr>\n<tr>\n<td>TIME_ADD \/ TIME_SUB<\/td>\n<td>\u9488\u5bf9\u4e00\u5929\u5185\u7684 TIME&#xff0c;\u800c\u4e0d\u662f\u5b8c\u6574\u65e5\u671f<\/td>\n<\/tr>\n<tr>\n<td>DATE_ADD vs DATE_SUB<\/td>\n<td>\u6b63\u6570\u53c2\u6570\u65f6&#xff0c;\u4e00\u4e2a\u52a0\u5929&#xff0c;\u4e00\u4e2a\u51cf\u5929<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>3\u3001\u7b80\u5355\u8bb0\u5fc6<\/h3>\n<p>\u6708&#xff1a;ADD_MONTHS\u3002 \u5929&#xff1a;DATE_ADD \/ DATE_SUB\u3002 \u5e74\u6708\u65e5\u65f6\u5206\u79d2&#xff1a;DATEADD\u3002 \u7eaf\u65f6\u95f4&#xff1a;TIME_ADD \/ TIME_SUB\u3002<\/p>\n<h3>4\u3001\u6848\u4f8b<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2017-05-14<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> ADD_MONTHS<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;2017-02-14&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2005-03-01<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> DATE_ADD<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATE<\/span> <span class=\"token string\">&#039;2005-02-28&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2005-02-28<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> DATE_SUB<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATE<\/span> <span class=\"token string\">&#039;2005-03-01&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2005-03-30 02:24:00<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> DATEADD<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2005-03-30 05:24:00&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;hh&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;15:44:40<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> FORMAT_TIME<span class=\"token punctuation\">(<\/span>TIME_ADD<span class=\"token punctuation\">(<\/span>TO_TIME<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;15:39:40&#039;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">&#039;%H:%M:%S&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;mi&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;%H:%M:%S&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;15:39:35<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> FORMAT_TIME<span class=\"token punctuation\">(<\/span>TIME_SUB<span class=\"token punctuation\">(<\/span>TO_TIME<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;15:39:40&#039;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">&#039;%H:%M:%S&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;second&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;%H:%M:%S&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h2>\u56db\u3001\u65e5\u671f\u5dee\u503c\u7c7b<\/h2>\n<table>\n<tr>\u51fd\u6570\u529f\u80fd<\/tr>\n<tbody>\n<tr>\n<td>DATEDIFF<\/td>\n<td>\u901a\u7528\u65e5\u671f\u5dee<\/td>\n<\/tr>\n<tr>\n<td>MONTHS_BETWEEN<\/td>\n<td>\u6708\u4efd\u5dee<\/td>\n<\/tr>\n<tr>\n<td>TIME_DIFF<\/td>\n<td>TIME \u65f6\u95f4\u5dee<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1\u3001\u5b9a\u4e49<\/h3>\n<ul>\n<li>DATEDIFF&#xff1a;\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5dee\u503c&#xff0c;\u5e76\u6309\u6307\u5b9a\u5355\u4f4d\u8fd4\u56de\u3002<\/li>\n<li>MONTHS_BETWEEN&#xff1a;\u4e13\u95e8\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u76f8\u5dee\u591a\u5c11\u4e2a\u6708\u3002<\/li>\n<li>TIME_DIFF&#xff1a;\u8ba1\u7b97\u4e24\u4e2a TIME \u65f6\u95f4\u4e4b\u95f4\u7684\u5dee\u503c\u3002<\/li>\n<\/ul>\n<h3>2\u3001\u533a\u522b<\/h3>\n<table>\n<tr>\u5bf9\u6bd4\u533a\u522b<\/tr>\n<tbody>\n<tr>\n<td>DATEDIFF<\/td>\n<td>\u901a\u7528&#xff0c;\u652f\u6301\u65e5\u3001\u65f6\u3001\u5206\u3001\u79d2\u7b49\u5355\u4f4d<\/td>\n<\/tr>\n<tr>\n<td>MONTHS_BETWEEN<\/td>\n<td>\u4e13\u95e8\u8ba1\u7b97\u6708\u6570&#xff0c;\u53ef\u8fd4\u56de\u5c0f\u6570<\/td>\n<\/tr>\n<tr>\n<td>TIME_DIFF<\/td>\n<td>\u4e13\u95e8\u9488\u5bf9 TIME<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>3\u3001\u7b80\u5355\u8bb0\u5fc6<\/h3>\n<p>\u65e5\u671f\u5dee&#xff1a;DATEDIFF\u3002 \u6708\u4efd\u5dee&#xff1a;MONTHS_BETWEEN\u3002 TIME \u5dee&#xff1a;TIME_DIFF\u3002<\/p>\n<h3>4\u3001\u6848\u4f8b<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;11<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> DATEDIFF<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATE<\/span> <span class=\"token string\">&#039;2013-05-21&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">DATE<\/span> <span class=\"token string\">&#039;2013-05-10&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;dd&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;-3.0<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> MONTHS_BETWEEN<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;1996-09-30&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;1996-12-31&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;10<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> TIME_DIFF<span class=\"token punctuation\">(<\/span>TO_TIME<span class=\"token punctuation\">(<\/span><span class=\"token number\">15<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">39<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">40<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> TO_TIME<span class=\"token punctuation\">(<\/span><span class=\"token number\">15<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">39<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">30<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;second&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h2>\u4e94\u3001\u683c\u5f0f\u8f6c\u6362\u7c7b<\/h2>\n<table>\n<tr>\u51fd\u6570\u529f\u80fd<\/tr>\n<tbody>\n<tr>\n<td>DATE_FORMAT<\/td>\n<td>\u65e5\u671f\u8f6c\u5b57\u7b26\u4e32<\/td>\n<\/tr>\n<tr>\n<td>TO_CHAR<\/td>\n<td>\u65e5\u671f\u8f6c\u5b57\u7b26\u4e32<\/td>\n<\/tr>\n<tr>\n<td>TO_DATE<\/td>\n<td>\u5b57\u7b26\u4e32\u8f6c\u65e5\u671f<\/td>\n<\/tr>\n<tr>\n<td>FORMAT_TIME<\/td>\n<td>TIME \u8f6c\u5b57\u7b26\u4e32<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1\u3001\u5b9a\u4e49<\/h3>\n<ul>\n<li>DATE_FORMAT&#xff1a;\u6309\u7167\u683c\u5f0f\u6a21\u677f\u5c06\u65e5\u671f\u8f6c\u6362\u6210\u5b57\u7b26\u4e32\u3002<\/li>\n<li>TO_CHAR&#xff1a;\u6309\u7167\u6307\u5b9a\u683c\u5f0f\u5c06\u65e5\u671f\u8f6c\u6362\u6210\u5b57\u7b26\u4e32\u3002<\/li>\n<li>TO_DATE&#xff1a;\u628a\u6307\u5b9a\u683c\u5f0f\u7684\u5b57\u7b26\u4e32\u8f6c\u6362\u6210\u65e5\u671f\u3002<\/li>\n<li>FORMAT_TIME&#xff1a;\u5c06\u5fae\u79d2\u8868\u793a\u7684 TIME \u683c\u5f0f\u5316\u6210\u5b57\u7b26\u4e32\u3002<\/li>\n<\/ul>\n<h3>2\u3001\u533a\u522b<\/h3>\n<table>\n<tr>\u5bf9\u6bd4\u533a\u522b<\/tr>\n<tbody>\n<tr>\n<td>DATE_FORMAT vs TO_CHAR<\/td>\n<td>\u90fd\u662f\u65e5\u671f\u2192\u5b57\u7b26\u4e32&#xff0c;\u4f46\u652f\u6301\u7c7b\u578b\u548c\u683c\u5f0f\u89c4\u5219\u4e0d\u540c<\/td>\n<\/tr>\n<tr>\n<td>TO_DATE<\/td>\n<td>\u5b57\u7b26\u4e32\u2192\u65e5\u671f&#xff0c;\u65b9\u5411\u76f8\u53cd<\/td>\n<\/tr>\n<tr>\n<td>FORMAT_TIME<\/td>\n<td>\u4e13\u95e8\u5904\u7406 TIME \u5fae\u79d2\u503c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>3\u3001\u7b80\u5355\u8bb0\u5fc6<\/h3>\n<p>\u65e5\u671f\u53d8\u5b57\u7b26\u4e32&#xff1a;DATE_FORMAT \/ TO_CHAR\u3002 \u5b57\u7b26\u4e32\u53d8\u65e5\u671f&#xff1a;TO_DATE\u3002 TIME \u53d8\u5b57\u7b26\u4e32&#xff1a;FORMAT_TIME\u3002<\/p>\n<h3>4\u3001\u6848\u4f8b<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2022-04-24<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> DATE_FORMAT<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;2022-04-24&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;yyyy-MM-dd&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;20080718<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> TO_CHAR<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2008-07-18 00:00:00&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;yyyymmdd&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2008-07-18 00:00:00<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> TO_DATE<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;20080718&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;yyyymmdd&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;15:39:40<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> FORMAT_TIME<span class=\"token punctuation\">(<\/span>TO_TIME<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;15:39:40&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;%H:%M:%S&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;%H:%M:%S&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h2>\u516d\u3001\u65f6\u95f4\u6233\u8f6c\u6362\u7c7b<\/h2>\n<table>\n<tr>\u51fd\u6570\u529f\u80fd<\/tr>\n<tbody>\n<tr>\n<td>FROM_UNIXTIME<\/td>\n<td>UNIX \u79d2 \u2192 \u65e5\u671f<\/td>\n<\/tr>\n<tr>\n<td>UNIX_TIMESTAMP<\/td>\n<td>\u65e5\u671f \u2192 UNIX \u79d2<\/td>\n<\/tr>\n<tr>\n<td>TO_MILLIS<\/td>\n<td>\u65e5\u671f \u2192 UNIX \u6beb\u79d2<\/td>\n<\/tr>\n<tr>\n<td>TO_TIME<\/td>\n<td>\u8f6c TIME \u5fae\u79d2\u503c<\/td>\n<\/tr>\n<tr>\n<td>TO_TIMESTAMP_NTZ<\/td>\n<td>\u8f6c\u65e0\u65f6\u533a\u65f6\u95f4\u6233<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1\u3001\u5b9a\u4e49<\/h3>\n<ul>\n<li>FROM_UNIXTIME&#xff1a;\u628a UNIX \u79d2\u65f6\u95f4\u6233\u8f6c\u6362\u6210\u65e5\u671f\u3002<\/li>\n<li>UNIX_TIMESTAMP&#xff1a;\u628a\u65e5\u671f\u8f6c\u6362\u6210 UNIX \u79d2\u65f6\u95f4\u6233\u3002<\/li>\n<li>TO_MILLIS&#xff1a;\u628a\u65e5\u671f\u8f6c\u6362\u6210 UNIX \u6beb\u79d2\u65f6\u95f4\u6233\u3002<\/li>\n<li>TO_TIME&#xff1a;\u628a\u65f6\u95f4\u6784\u9020\u6210\u4ece\u5f53\u5929 00:00:00 \u5f00\u59cb\u7d2f\u8ba1\u7684\u5fae\u79d2\u503c\u3002<\/li>\n<li>TO_TIMESTAMP_NTZ&#xff1a;\u628a\u65e5\u671f\u65f6\u95f4\u8f6c\u6362\u6210\u65e0\u65f6\u533a TIMESTAMP_NTZ\u3002<\/li>\n<\/ul>\n<h3>2\u3001\u533a\u522b<\/h3>\n<table>\n<tr>\u5bf9\u6bd4\u533a\u522b<\/tr>\n<tbody>\n<tr>\n<td>FROM_UNIXTIME<\/td>\n<td>\u79d2\u65f6\u95f4\u6233 \u2192 \u65e5\u671f<\/td>\n<\/tr>\n<tr>\n<td>UNIX_TIMESTAMP<\/td>\n<td>\u65e5\u671f \u2192 \u79d2\u65f6\u95f4\u6233<\/td>\n<\/tr>\n<tr>\n<td>TO_MILLIS<\/td>\n<td>\u65e5\u671f \u2192 \u6beb\u79d2\u65f6\u95f4\u6233<\/td>\n<\/tr>\n<tr>\n<td>TO_TIME<\/td>\n<td>\u8868\u793a\u4e00\u5929\u4e2d\u7684\u65f6\u95f4&#xff0c;\u5355\u4f4d\u4e3a\u5fae\u79d2<\/td>\n<\/tr>\n<tr>\n<td>TO_TIMESTAMP_NTZ<\/td>\n<td>\u5f97\u5230\u65e0\u65f6\u533a\u65f6\u95f4\u6233<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>3\u3001\u7b80\u5355\u8bb0\u5fc6<\/h3>\n<p>FROM_UNIXTIME &#061; \u65f6\u95f4\u6233\u56de\u6765\u3002 UNIX_TIMESTAMP &#061; \u65e5\u671f\u53d8\u79d2\u3002 TO_MILLIS &#061; \u65e5\u671f\u53d8\u6beb\u79d2\u3002 TO_TIME &#061; \u53d8 TIME\u3002 TO_TIMESTAMP_NTZ &#061; \u53d8\u65e0\u65f6\u533a\u65f6\u95f4\u6233\u3002<\/p>\n<h3>4\u3001\u6848\u4f8b<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;1973-11-30 05:33:09<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> FROM_UNIXTIME<span class=\"token punctuation\">(<\/span><span class=\"token number\">123456789<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;1699585860<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> UNIX_TIMESTAMP<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2023-11-10 11:11:00&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;1617174900000<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> TO_MILLIS<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2021-03-31 15:15:00&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;48273000000<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> TO_TIME<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;13:24:33&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;%H:%M:%S&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2025-05-18 15:30:00<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> TO_TIMESTAMP_NTZ<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;2025-05-18 15:30:00&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;%F %T&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h2>\u4e03\u3001\u65f6\u533a\u8f6c\u6362\u7c7b<\/h2>\n<table>\n<tr>\u51fd\u6570\u529f\u80fd<\/tr>\n<tbody>\n<tr>\n<td>FROM_UTC_TIMESTAMP<\/td>\n<td>UTC \u2192 \u6307\u5b9a\u65f6\u533a<\/td>\n<\/tr>\n<tr>\n<td>TO_UTC_TIMESTAMP<\/td>\n<td>\u6307\u5b9a\u65f6\u533a \u2192 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1\u3001\u5b9a\u4e49<\/h3>\n<ul>\n<li>FROM_UTC_TIMESTAMP&#xff1a;\u628a UTC \u65f6\u95f4\u8f6c\u6362\u6210\u6307\u5b9a\u65f6\u533a\u65f6\u95f4\u3002<\/li>\n<li>TO_UTC_TIMESTAMP&#xff1a;\u628a\u6307\u5b9a\u65f6\u533a\u65f6\u95f4\u8f6c\u6362\u6210 UTC\u3002<\/li>\n<\/ul>\n<h3>2\u3001\u533a\u522b<\/h3>\n<table>\n<tr>\u51fd\u6570\u65b9\u5411<\/tr>\n<tbody>\n<tr>\n<td>FROM_UTC_TIMESTAMP<\/td>\n<td>UTC \u2192 \u6307\u5b9a\u65f6\u533a<\/td>\n<\/tr>\n<tr>\n<td>TO_UTC_TIMESTAMP<\/td>\n<td>\u6307\u5b9a\u65f6\u533a \u2192 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>3\u3001\u7b80\u5355\u8bb0\u5fc6<\/h3>\n<p>FROM UTC &#061; \u4ece UTC \u51fa\u6765\u3002 TO UTC &#061; \u8f6c\u5230 UTC\u3002<\/p>\n<h3>4\u3001\u6848\u4f8b<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;\u628a UTC \u65f6\u95f4\u8f6c\u6362\u4e3a PST<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> FROM_UTC_TIMESTAMP<span class=\"token punctuation\">(<\/span><span class=\"token number\">1501557840000<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;PST&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;\u628a Asia\/Shanghai \u65f6\u95f4\u8f6c\u6362\u4e3a UTC<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> TO_UTC_TIMESTAMP<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">TIMESTAMP<\/span> <span class=\"token string\">&#039;2021-11-29 08:00:00&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;Asia\/Shanghai&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h2>\u516b\u3001\u65e5\u671f \/ \u65f6\u95f4\u622a\u65ad\u7c7b<\/h2>\n<table>\n<tr>\u51fd\u6570\u529f\u80fd<\/tr>\n<tbody>\n<tr>\n<td>DATETRUNC<\/td>\n<td>\u65e5\u671f\u622a\u65ad<\/td>\n<\/tr>\n<tr>\n<td>TIME_TRUNC<\/td>\n<td>TIME \u622a\u65ad<\/td>\n<\/tr>\n<tr>\n<td>TRUNC_TIME<\/td>\n<td>\u622a\u65ad\u540e\u8fd4\u56de STRING<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1\u3001\u5b9a\u4e49<\/h3>\n<ul>\n<li>DATETRUNC&#xff1a;\u628a\u65e5\u671f\u5411\u4e0b\u622a\u65ad\u5230\u6307\u5b9a\u65e5\u671f\u7c92\u5ea6\u3002<\/li>\n<li>TIME_TRUNC&#xff1a;\u628a TIME \u5411\u4e0b\u622a\u65ad\u5230\u6307\u5b9a\u65f6\u95f4\u7c92\u5ea6\u3002<\/li>\n<li>TRUNC_TIME&#xff1a;\u622a\u65ad\u65e5\u671f\u6216\u65f6\u95f4\u540e&#xff0c;\u4ee5\u5b57\u7b26\u4e32\u8fd4\u56de\u3002<\/li>\n<\/ul>\n<h3>2\u3001\u533a\u522b<\/h3>\n<table>\n<tr>\u5bf9\u6bd4\u533a\u522b<\/tr>\n<tbody>\n<tr>\n<td>DATETRUNC<\/td>\n<td>\u5904\u7406\u65e5\u671f \/ \u65f6\u95f4\u6233<\/td>\n<\/tr>\n<tr>\n<td>TIME_TRUNC<\/td>\n<td>\u5904\u7406 TIME \u5fae\u79d2\u503c<\/td>\n<\/tr>\n<tr>\n<td>TRUNC_TIME<\/td>\n<td>\u622a\u65ad\u540e\u8fd4\u56de STRING&#xff0c;\u66f4\u504f\u5c55\u793a\u6216\u7ef4\u5ea6\u5b57\u6bb5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>3\u3001\u7b80\u5355\u8bb0\u5fc6<\/h3>\n<p>\u65e5\u671f\u622a\u65ad&#xff1a;DATETRUNC\u3002 TIME \u622a\u65ad&#xff1a;TIME_TRUNC\u3002 \u622a\u5b8c\u53d8\u5b57\u7b26\u4e32&#xff1a;TRUNC_TIME\u3002<\/p>\n<h3>4\u3001\u6848\u4f8b<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2011-12-01 00:00:00<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> DATETRUNC<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2011-12-07 16:28:46&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;month&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;15:31:00<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> FORMAT_TIME<span class=\"token punctuation\">(<\/span>TIME_TRUNC<span class=\"token punctuation\">(<\/span>TO_TIME<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;15:31:38.776&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;HH:MI:SS.ff3&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;MINUTE&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;%H:%M:%S&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2025-06<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> TRUNC_TIME<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATE<\/span> <span class=\"token string\">&#039;2025-06-10&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;month&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h2>\u4e5d\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b<\/h2>\n<table>\n<tr>\u51fd\u6570\u529f\u80fd<\/tr>\n<tbody>\n<tr>\n<td>DATEPART<\/td>\n<td>\u901a\u7528\u65e5\u671f\u90e8\u5206\u63d0\u53d6<\/td>\n<\/tr>\n<tr>\n<td>EXTRACT<\/td>\n<td>\u6807\u51c6\u8bed\u6cd5\u63d0\u53d6\u65e5\u671f\u90e8\u5206<\/td>\n<\/tr>\n<tr>\n<td>YEAR<\/td>\n<td>\u5e74<\/td>\n<\/tr>\n<tr>\n<td>MONTH<\/td>\n<td>\u6708<\/td>\n<\/tr>\n<tr>\n<td>DAY<\/td>\n<td>\u65e5<\/td>\n<\/tr>\n<tr>\n<td>DAYOFMONTH<\/td>\n<td>\u6708\u4e2d\u7684\u7b2c\u51e0\u5929<\/td>\n<\/tr>\n<tr>\n<td>DAYOFWEEK<\/td>\n<td>\u661f\u671f<\/td>\n<\/tr>\n<tr>\n<td>DAYOFYEAR<\/td>\n<td>\u5e74\u4e2d\u7684\u7b2c\u51e0\u5929<\/td>\n<\/tr>\n<tr>\n<td>HOUR<\/td>\n<td>\u65f6<\/td>\n<\/tr>\n<tr>\n<td>MINUTE<\/td>\n<td>\u5206<\/td>\n<\/tr>\n<tr>\n<td>SECOND<\/td>\n<td>\u79d2<\/td>\n<\/tr>\n<tr>\n<td>QUARTER<\/td>\n<td>\u5b63\u5ea6<\/td>\n<\/tr>\n<tr>\n<td>ISOYEAR<\/td>\n<td>ISO \u5e74<\/td>\n<\/tr>\n<tr>\n<td>WEEKDAY<\/td>\n<td>\u5468\u4e2d\u7684\u7b2c\u51e0\u5929<\/td>\n<\/tr>\n<tr>\n<td>WEEKOFYEAR<\/td>\n<td>\u5e74\u4e2d\u7684\u7b2c\u51e0\u5468<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1\u3001\u5b9a\u4e49<\/h3>\n<p>\u8fd9\u4e00\u7c7b\u51fd\u6570\u672c\u8d28\u4e0a\u90fd\u662f&#xff1a;<\/p>\n<p>\u4ece\u4e00\u4e2a\u5b8c\u6574\u65e5\u671f\u4e2d\u63d0\u53d6\u67d0\u4e00\u4e2a\u65e5\u671f\u90e8\u5206\u3002<\/p>\n<p>DATEPART \u548c EXTRACT \u662f\u901a\u7528\u51fd\u6570&#xff0c;\u5176\u4f59\u51fd\u6570\u662f\u56fa\u5b9a\u5b57\u6bb5\u7684\u5feb\u6377\u5199\u6cd5\u3002<\/p>\n<h3>2\u3001\u533a\u522b<\/h3>\n<table>\n<tr>\u5bf9\u6bd4\u533a\u522b<\/tr>\n<tbody>\n<tr>\n<td>DATEPART<\/td>\n<td>\u65f6\u95f4\u5355\u4f4d\u4ee5\u5b57\u7b26\u4e32\u53c2\u6570\u4f20\u5165<\/td>\n<\/tr>\n<tr>\n<td>EXTRACT<\/td>\n<td>\u4f7f\u7528 EXTRACT(YEAR FROM date) \u8bed\u6cd5<\/td>\n<\/tr>\n<tr>\n<td>YEAR \/ MONTH \/ DAY&#8230;<\/td>\n<td>\u56fa\u5b9a\u63d0\u53d6\u67d0\u4e00\u90e8\u5206&#xff0c;\u6700\u76f4\u63a5<\/td>\n<\/tr>\n<tr>\n<td>DAY vs DAYOFMONTH<\/td>\n<td>\u90fd\u8868\u793a\u6708\u4e2d\u7684\u201c\u65e5\u201d<\/td>\n<\/tr>\n<tr>\n<td>DAYOFWEEK vs WEEKDAY<\/td>\n<td>\u90fd\u8868\u793a\u661f\u671f&#xff0c;\u4f46\u7f16\u53f7\u4f53\u7cfb\u4e0d\u540c<\/td>\n<\/tr>\n<tr>\n<td>ISOYEAR vs YEAR<\/td>\n<td>ISO \u5468\u5386\u5e74\u4efd vs \u666e\u901a\u65e5\u5386\u5e74\u4efd<\/td>\n<\/tr>\n<tr>\n<td>WEEKOFYEAR<\/td>\n<td>\u8fd4\u56de\u5f53\u5e74\u7b2c\u51e0\u5468<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>3\u3001\u7b80\u5355\u8bb0\u5fc6<\/h3>\n<p>\u901a\u7528\u63d0\u53d6&#xff1a;DATEPART \/ EXTRACT\u3002 \u660e\u786e\u5b57\u6bb5&#xff1a;\u76f4\u63a5 YEAR \/ MONTH \/ DAY \/ HOUR&#8230;\u3002 \u5468\u76f8\u5173&#xff1a;DAYOFWEEK \/ WEEKDAY \/ WEEKOFYEAR \/ ISOYEAR\u3002<\/p>\n<h3>4\u3001\u6848\u4f8b<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2013<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> DATEPART<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2013-06-08 01:10:00&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;yyyy&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2019<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> EXTRACT<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">YEAR<\/span> <span class=\"token keyword\">FROM<\/span> <span class=\"token keyword\">TIMESTAMP<\/span> <span class=\"token string\">&#039;2019-05-01 11:21:00&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2026<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> <span class=\"token keyword\">YEAR<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2026-09-27 15:30:45&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;9<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> <span class=\"token keyword\">MONTH<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2026-09-27 15:30:45&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;27<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> <span class=\"token keyword\">DAY<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2026-09-27 15:30:45&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;27<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> DAYOFMONTH<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;2026-09-27&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;5<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> DAYOFWEEK<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;2009-07-30&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;270<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> DAYOFYEAR<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;2026-09-27&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;15<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> <span class=\"token keyword\">HOUR<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2026-09-27 15:30:45&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;30<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> <span class=\"token keyword\">MINUTE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2026-09-27 15:30:45&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;45<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> <span class=\"token keyword\">SECOND<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2026-09-27 15:30:45&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;3<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> QUARTER<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;2026-09-27&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2026<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> ISOYEAR<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATE<\/span> <span class=\"token string\">&#039;2026-09-27&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;4<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> WEEKDAY<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2009-03-20 11:11:00&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;39<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> WEEKOFYEAR<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;2026-09-27&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h2>\u5341\u3001\u6708\u672b \/ \u661f\u671f\u8ba1\u7b97\u7c7b<\/h2>\n<table>\n<tr>\u51fd\u6570\u529f\u80fd<\/tr>\n<tbody>\n<tr>\n<td>LAST_DAY<\/td>\n<td>\u6708\u672b&#xff0c;\u8fd4\u56de STRING<\/td>\n<\/tr>\n<tr>\n<td>LASTDAY<\/td>\n<td>\u6708\u672b&#xff0c;\u8fd4\u56de DATETIME<\/td>\n<\/tr>\n<tr>\n<td>NEXT_DAY<\/td>\n<td>\u4e0b\u4e00\u4e2a\u6307\u5b9a\u661f\u671f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1\u3001\u5b9a\u4e49<\/h3>\n<ul>\n<li>LAST_DAY&#xff1a;\u83b7\u53d6\u6307\u5b9a\u65e5\u671f\u6240\u5728\u6708\u6700\u540e\u4e00\u5929\u3002<\/li>\n<li>LASTDAY&#xff1a;\u540c\u6837\u83b7\u53d6\u6708\u672b&#xff0c;\u4f46\u8fd4\u56de DATETIME\u3002<\/li>\n<li>NEXT_DAY&#xff1a;\u83b7\u53d6\u5927\u4e8e\u6307\u5b9a\u65e5\u671f\u4e14\u5339\u914d\u76ee\u6807\u661f\u671f\u7684\u7b2c\u4e00\u4e2a\u65e5\u671f\u3002<\/li>\n<\/ul>\n<h3>2\u3001\u533a\u522b<\/h3>\n<table>\n<tr>\u5bf9\u6bd4\u533a\u522b<\/tr>\n<tbody>\n<tr>\n<td>LAST_DAY<\/td>\n<td>\u8fd4\u56de STRING&#xff0c;\u901a\u5e38\u662f yyyy-mm-dd<\/td>\n<\/tr>\n<tr>\n<td>LASTDAY<\/td>\n<td>\u8fd4\u56de DATETIME&#xff0c;\u65f6\u95f4\u90e8\u5206\u4e3a 00:00:00<\/td>\n<\/tr>\n<tr>\n<td>NEXT_DAY<\/td>\n<td>\u4e0d\u662f\u6708\u672b\u8ba1\u7b97&#xff0c;\u800c\u662f\u5411\u540e\u627e\u76ee\u6807\u661f\u671f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>3\u3001\u7b80\u5355\u8bb0\u5fc6<\/h3>\n<p>\u6708\u672b\u5b57\u7b26\u4e32&#xff1a;LAST_DAY\u3002 \u6708\u672b DATETIME&#xff1a;LASTDAY\u3002 \u4e0b\u4e00\u4e2a\u661f\u671f\u51e0&#xff1a;NEXT_DAY\u3002<\/p>\n<h3>4\u3001\u6848\u4f8b<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2017-03-31<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> LAST_DAY<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;2017-03-04&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2013-06-30 00:00:00<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> LASTDAY<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2013-06-08 01:10:00&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2017-08-08<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> NEXT_DAY<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;2017-08-01&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;TU&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h2>\u5341\u4e00\u3001\u65e5\u671f\u6821\u9a8c\u7c7b<\/h2>\n<table>\n<tr>\u51fd\u6570\u529f\u80fd<\/tr>\n<tbody>\n<tr>\n<td>ISDATE<\/td>\n<td>\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u7b26\u5408\u6307\u5b9a\u65e5\u671f\u683c\u5f0f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1\u3001\u5b9a\u4e49<\/h3>\n<p>ISDATE \u7528\u4e8e\u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u80fd\u591f\u6309\u7167\u6307\u5b9a\u683c\u5f0f\u8f6c\u6362\u6210\u65e5\u671f\u503c\u3002<\/p>\n<h3>2\u3001\u533a\u522b<\/h3>\n<p>ISDATE \u53ea\u8d1f\u8d23\u5224\u65ad&#xff0c;\u4e0d\u4f1a\u771f\u6b63\u6267\u884c\u65e5\u671f\u8f6c\u6362\u3002<\/p>\n<p>\u5e38\u89c1\u7ec4\u5408&#xff1a;<\/p>\n<p>\u5148\u7528 ISDATE \u5224\u65ad&#xff0c;\u518d\u7528 TO_DATE \u8f6c\u6362\u3002<\/p>\n<h3>3\u3001\u7b80\u5355\u8bb0\u5fc6<\/h3>\n<p>ISDATE &#061; \u201c\u662f\u4e0d\u662f\u5408\u6cd5\u65e5\u671f\u201d\u3002<\/p>\n<h3>4\u3001\u6848\u4f8b<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;true<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> ISDATE<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;2021-10-11&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;yyyy-mm-dd&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h2>\u5341\u4e8c\u3001\u6700\u5bb9\u6613\u6df7\u6dc6\u7684\u51fd\u6570\u5bf9\u6bd4<\/h2>\n<table>\n<tr>\u51fd\u6570\u7ec4\u5408\u6700\u6838\u5fc3\u533a\u522b<\/tr>\n<tbody>\n<tr>\n<td>GETDATE vs NOW<\/td>\n<td>\u90fd\u8fd4\u56de DATETIME&#xff1b;NOW \u5c55\u793a\u6beb\u79d2\u66f4\u76f4\u89c2<\/td>\n<\/tr>\n<tr>\n<td>CURRENT_TIMESTAMP vs GETDATE<\/td>\n<td>TIMESTAMP vs DATETIME<\/td>\n<\/tr>\n<tr>\n<td>DATE_ADD vs DATE_SUB<\/td>\n<td>\u6b63\u6570\u53c2\u6570\u65f6&#xff0c;\u52a0\u5929 vs \u51cf\u5929<\/td>\n<\/tr>\n<tr>\n<td>DATE_ADD vs DATEADD<\/td>\n<td>\u53ea\u6309\u5929 vs \u652f\u6301\u5e74\u6708\u65e5\u65f6\u5206\u79d2<\/td>\n<\/tr>\n<tr>\n<td>ADD_MONTHS vs DATEADD<\/td>\n<td>\u4e13\u95e8\u6309\u6708 vs \u591a\u5355\u4f4d<\/td>\n<\/tr>\n<tr>\n<td>DATEDIFF vs MONTHS_BETWEEN<\/td>\n<td>\u901a\u7528\u65e5\u671f\u5dee vs \u4e13\u95e8\u8ba1\u7b97\u6708\u4efd\u5dee<\/td>\n<\/tr>\n<tr>\n<td>DATE_FORMAT vs TO_CHAR<\/td>\n<td>\u90fd\u662f\u65e5\u671f\u8f6c\u5b57\u7b26\u4e32&#xff0c;\u4f46\u652f\u6301\u7c7b\u578b \/ \u683c\u5f0f\u89c4\u5219\u4e0d\u540c<\/td>\n<\/tr>\n<tr>\n<td>TO_CHAR vs TO_DATE<\/td>\n<td>\u65e5\u671f\u2192\u5b57\u7b26\u4e32 vs \u5b57\u7b26\u4e32\u2192\u65e5\u671f<\/td>\n<\/tr>\n<tr>\n<td>FROM_UNIXTIME vs UNIX_TIMESTAMP<\/td>\n<td>UNIX \u79d2\u2192\u65e5\u671f vs \u65e5\u671f\u2192UNIX \u79d2<\/td>\n<\/tr>\n<tr>\n<td>UNIX_TIMESTAMP vs TO_MILLIS<\/td>\n<td>\u79d2\u65f6\u95f4\u6233 vs \u6beb\u79d2\u65f6\u95f4\u6233<\/td>\n<\/tr>\n<tr>\n<td>DATETRUNC vs TRUNC_TIME<\/td>\n<td>\u8fd4\u56de\u65e5\u671f\u7c7b\u578b vs \u8fd4\u56de STRING<\/td>\n<\/tr>\n<tr>\n<td>DATETRUNC vs TIME_TRUNC<\/td>\n<td>\u5b8c\u6574\u65e5\u671f\u622a\u65ad vs TIME \u622a\u65ad<\/td>\n<\/tr>\n<tr>\n<td>DATEPART vs EXTRACT<\/td>\n<td>\u5b57\u7b26\u4e32\u5355\u4f4d\u53c2\u6570 vs\u6807\u51c6 EXTRACT \u8bed\u6cd5<\/td>\n<\/tr>\n<tr>\n<td>DAY vs DAYOFMONTH<\/td>\n<td>\u90fd\u8868\u793a\u6708\u4e2d\u7684\u65e5<\/td>\n<\/tr>\n<tr>\n<td>DAYOFWEEK vs WEEKDAY<\/td>\n<td>\u90fd\u8868\u793a\u661f\u671f&#xff0c;\u4f46\u7f16\u53f7\u89c4\u5219\u4e0d\u540c<\/td>\n<\/tr>\n<tr>\n<td>YEAR vs ISOYEAR<\/td>\n<td>\u666e\u901a\u65e5\u5386\u5e74 vs ISO \u5468\u5386\u5e74<\/td>\n<\/tr>\n<tr>\n<td>LAST_DAY vs LASTDAY<\/td>\n<td>\u8fd4\u56de STRING vs \u8fd4\u56de DATETIME<\/td>\n<\/tr>\n<tr>\n<td>FROM_UTC_TIMESTAMP vs TO_UTC_TIMESTAMP<\/td>\n<td>UTC\u2192\u6307\u5b9a\u65f6\u533a vs \u6307\u5b9a\u65f6\u533a\u2192UTC<\/td>\n<\/tr>\n<tr>\n<td>TIME_ADD vs DATEADD<\/td>\n<td>TIME \u8fd0\u7b97 vs \u5b8c\u6574\u65e5\u671f\u65f6\u95f4\u8fd0\u7b97<\/td>\n<\/tr>\n<tr>\n<td>ISDATE vs TO_DATE<\/td>\n<td>\u5224\u65ad\u662f\u5426\u5408\u6cd5 vs \u771f\u6b63\u6267\u884c\u8f6c\u6362<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>\u5341\u4e09\u3001\u5e38\u7528\u6848\u4f8b<\/h2>\n<h3>1\u3001\u83b7\u53d6\u6628\u5929\u65e5\u671f<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;\u5f53\u524d\u65e5\u671f\u7684\u524d\u4e00\u5929<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> DATEADD<span class=\"token punctuation\">(<\/span>GETDATE<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;dd&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">AS<\/span> yesterday<span class=\"token punctuation\">;<\/span><\/p>\n<h3>2\u3001\u83b7\u53d6\u4e1a\u52a1\u65e5\u671f yyyyMMdd<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;\u4f8b\u5982 20260927<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> TO_CHAR<span class=\"token punctuation\">(<\/span>GETDATE<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;yyyymmdd&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">AS<\/span> biz_date<span class=\"token punctuation\">;<\/span><\/p>\n<h3>3\u3001\u83b7\u53d6\u6708\u4efd yyyyMM<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;\u4f8b\u5982 202609<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> TO_CHAR<span class=\"token punctuation\">(<\/span>GETDATE<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;yyyymm&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">AS<\/span> month_id<span class=\"token punctuation\">;<\/span><\/p>\n<h3>4\u3001\u8ba1\u7b97\u4e24\u4e2a\u65f6\u95f4\u76f8\u5dee\u5206\u949f\u6570<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;30<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> DATEDIFF<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2026-09-27 11:30:00&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2026-09-27 11:00:00&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;mi&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">AS<\/span> diff_min<span class=\"token punctuation\">;<\/span><\/p>\n<h3>5\u300113 \u4f4d\u6beb\u79d2\u65f6\u95f4\u6233\u8f6c\u65e5\u671f<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;\u5148\u5c06\u6beb\u79d2\u9664\u4ee5 1000&#xff0c;\u518d\u8f6c DATETIME<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> FROM_UNIXTIME<span class=\"token punctuation\">(<\/span>CAST<span class=\"token punctuation\">(<\/span><span class=\"token number\">1784822400000<\/span> <span class=\"token operator\">\/<\/span> <span class=\"token number\">1000<\/span> <span class=\"token keyword\">AS<\/span> <span class=\"token keyword\">BIGINT<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">AS<\/span> datetime_value<span class=\"token punctuation\">;<\/span><\/p>\n<h3>6\u3001\u83b7\u53d6\u6708\u672b\u65e5\u671f<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2026-09-30<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> LAST_DAY<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;2026-09-27&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">AS<\/span> month_end<span class=\"token punctuation\">;<\/span><\/p>\n<h3>7\u3001\u6309\u6708\u622a\u65ad\u65e5\u671f<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2026-09-01 00:00:00<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> DATETRUNC<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">DATETIME<\/span> <span class=\"token string\">&#039;2026-09-27 15:30:45&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;month&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">AS<\/span> month_start<span class=\"token punctuation\">;<\/span><\/p>\n<h3>8\u3001\u5b57\u7b26\u4e32\u65e5\u671f\u8f6c\u6362<\/h3>\n<p><span class=\"token comment\">&#8212; \u7ed3\u679c&#xff1a;2026-09-27 00:00:00<\/span><br \/>\n<span class=\"token keyword\">SELECT<\/span> TO_DATE<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;20260927&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;yyyymmdd&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">AS<\/span> biz_date<span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h2>\u5341\u56db\u3001\u53c2\u8003\u8d44\u6599<\/h2>\n<p>\u963f\u91cc\u4e91 MaxCompute \u5b98\u65b9\u6587\u6863&#xff1a;<\/p>\n<p>https:\/\/help.aliyun.com\/zh\/maxcompute\/date-functions<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u76ee\u5f55\u4e00\u3001\u5206\u7c7b\u603b\u89c81\u3001\u51fd\u6570\u5206\u7c7b2\u3001\u5168\u90e8\u51fd\u6570\u4e8c\u3001\u5f53\u524d\u65f6\u95f4 \/ \u65f6\u533a\u7c7b1\u3001\u5b9a\u4e492\u3001\u533a\u522b3\u3001\u7b80\u5355\u8bb0\u5fc64\u3001\u6848\u4f8b\u4e09\u3001\u65e5\u671f\u52a0\u51cf\u7c7b1\u3001\u5b9a\u4e492\u3001\u533a\u522b3\u3001\u7b80\u5355\u8bb0\u5fc64\u3001\u6848\u4f8b\u56db\u3001\u65e5\u671f\u5dee\u503c\u7c7b1\u3001\u5b9a\u4e492\u3001\u533a\u522b3\u3001\u7b80\u5355\u8bb0\u5fc64\u3001\u6848\u4f8b\u4e94\u3001\u683c\u5f0f\u8f6c\u6362\u7c7b1\u3001\u5b9a\u4e492\u3001\u533a\u522b3\u3001\u7b80\u5355\u8bb0\u5fc64\u3001\u6848\u4f8b\u516d\u3001\u65f6\u95f4\u6233\u8f6c\u6362\u7c7b1\u3001\u5b9a\u4e492\u3001\u533a\u522b3\u3001\u7b80\u5355\u8bb0\u5fc64\u3001\u6848\u4f8b\u4e03\u3001\u65f6\u533a\u8f6c\u6362\u7c7b1\u3001\u5b9a\u4e492\u3001\u533a\u522b3\u3001\u7b80\u5355\u8bb0\u5fc64\u3001\u6848\u4f8b\u516b\u3001\u65e5\u671f \/ \u65f6\u95f4\u622a\u65ad\u7c7b1\u3001\u5b9a\u4e492\u3001\u533a\u522b3\u3001\u7b80\u5355\u8bb0\u5fc64\u3001\u6848\u4f8b\u4e5d\u3001\u65e5\u671f\u90e8\u5206\u63d0\u53d6\u7c7b1\u3001\u5b9a\u4e492\u3001\u533a\u522b3\u3001\u7b80\u5355\u8bb0\u5fc64\u3001\u6848\u4f8b\u5341\u3001\u6708\u672b <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[12609,12610,12608,323,100],"topic":[],"class_list":["post-110620","post","type-post","status-publish","format-standard","hentry","category-server","tag-dataworks","tag-maxcompute","tag-odps","tag-323","tag-100"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>MaxCompute\u4e2d\u65e5\u671f\u4e0e\u65f6\u95f4\u51fd\u6570 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, 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