{"id":5360,"date":"2020-07-29T23:24:36","date_gmt":"2020-07-29T15:24:36","guid":{"rendered":"http:\/\/39.97.231.10\/?p=5360"},"modified":"2020-07-29T23:24:36","modified_gmt":"2020-07-29T15:24:36","slug":"mysql%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b-%e6%97%b6%e9%97%b4%e5%92%8c%e6%97%a5%e6%9c%9f","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=5360","title":{"rendered":"MySQL\u6570\u636e\u7c7b\u578b-\u65f6\u95f4\u548c\u65e5\u671f"},"content":{"rendered":"<div class=\\\"blog_content\\\">\n<div class=\\\"blog_detail\\\">\n<div>\n\u65f6\u95f4\u548c\u65e5\u671f\u662f\u6570\u636e\u5e93\u7684\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c\u4e5f\u662f\u4f7f\u7528\u8f83\u591a\u7684\u4e00\u7c7b\u6570\u636e\u7c7b\u578b\uff0c\u4e3b\u8981\u5305\u62ec\u65f6\u95f4\u6233\u3001\u65e5\u671f\u3001\u5e74\u7b49\u3002<\/p>\n<h5>\u65e5\u671f\u548c\u65e5\u671f\u7c7b\u578b\uff1a<\/h5>\n<ul>\n<li>DATE<\/li>\n<li>DATETIME<\/li>\n<li>TIME<\/li>\n<li>TIMESTAMP<\/li>\n<li>YEAR<\/li>\n<\/ul>\n<p>\u5176\u4e2dTIME,DATETIME,TIMESTAMP\u53ef\u4ee5\u7cbe\u786e\u5230\u5fae\u79d2\u3002<br \/>\n<strong>DATE\uff1a<\/strong><br \/>\n\u65e5\u671f\u7c7b\u578b\uff0c\u8303\u56f4\u4e3a\\&#8217;1000-01-01\\&#8217;\u00a0\u5230\u00a0\\&#8217;9999-12-31\\&#8217;\u3002<br \/>\n<strong>DATETIME(fsp)\uff1a<\/strong><br \/>\n\u65e5\u671f\u65f6\u95f4\uff0c\u8303\u56f4\u4e3a\\&#8217;1000-01-01 00:00:00.000000\\&#8217;\u00a0\u5230\u00a0\\&#8217;9999-12-31 23:59:59.999999\\&#8217;\u3002fsp\u8868\u793a\u79d2\u4ee5\u4e0b\u7684\u7cbe\u5ea6\uff0cfsp\u53d6\u503c\u4e3a0~6\uff0c\u5373\u6700\u5927\u7cbe\u786e\u5230\u5fae\u79d2\u3002<br \/>\n<strong>TIME(fsp)\uff1a<\/strong><br \/>\n\u65f6\u95f4\uff0c\u8303\u56f4\u4e3a<br \/>\n\\&#8217;-838:59:59.000000\\&#8217;\u00a0\u5230\u00a0\\&#8217;838:59:59.000000\\&#8217;\u3002fsp\u8868\u793a\u79d2\u4ee5\u4e0b\u7684\u7cbe\u5ea6\uff0cfsp\u53d6\u503c\u4e3a0~6\uff0c\u5373\u6700\u5927\u7cbe\u786e\u5230\u5fae\u79d2\u3002<br \/>\nTIME\u7c7b\u578b\u7684\u5c0f\u65f6\u90e8\u5206\u6700\u5927\u503c\u8d85\u8fc7\u4e8624\uff0cMySQL\u8fd9\u6837\u8bbe\u8ba1\u662f\u56e0\u4e3aTIME\u7c7b\u578b\u4e0d\u4ec5\u8868\u793a1\u5929\u7684\u65f6\u95f4\uff0c\u4e5f\u80fd\u8868\u793a\u4e24\u4e2a\u4e8b\u4ef6\u7684\u65f6\u95f4\u95f4\u9694\uff0c\u6240\u4ee5\u53ef\u4ee5\u5927\u4e8e24\uff0c\u4e5f\u53ef\u4ee5\u5c0f\u4e8e24\u3002<br \/>\n<strong>TIMESTAMP(fsp)\uff1a<\/strong><br \/>\n\u65f6\u95f4\u6233\uff0c\u8303\u56f4\u4e3a<br \/>\n\\&#8217;1970-01-01 00:00:01.000000\\&#8217;\u00a0UTC \u5230\u00a0\\&#8217;2038-01-19 03:14:07.999999\\&#8217;\u00a0UTC\u3002fsp\u8868\u793a\u79d2\u4ee5\u4e0b\u7684\u7cbe\u5ea6\uff0cfsp\u53d6\u503c\u4e3a0~6\uff0c\u5373\u6700\u5927\u7cbe\u786e\u5230\u5fae\u79d2\u3002<br \/>\n<strong>YEAR(4)\uff1a<\/strong><br \/>\n\u5e74\uff0c\u8303\u56f4\u4e3a1901\u00a0\u5230\u00a02155\u3002YEAR\u7c7b\u578b\u7b49\u540c\u4e8eYEAR(4)\uff0c\u5176\u4e2d4\u8868\u793a\u663e\u793a\u5bbd\u5ea6\uff0cMySQL 8.0.19 \u7248\u672c\u5c06\u5e9f\u5f03\u663e\u793a\u5bbd\u5ea6\u3002<\/p>\n<h5>\u65f6\u95f4\u65e5\u671f\u7684\u96f6\u503c\uff1a<\/h5>\n<p>\u5728\u975e\u4e25\u683c\u6a21\u5f0f\u4e0b\uff0c\u65e5\u95f4\u548c\u65e5\u671f\u5141\u8bb8\u96f6\u503c\u5b58\u5728\uff0c\u4f46\u8fd9\u662f\u4e0d\u89c4\u8303\u7684\u4f7f\u7528\uff0c\u4e5f\u4e0d\u5efa\u8bae\u4f7f\u7528\u3002\u90e8\u5206\u65f6\u95f4\u65e5\u671f\u96f6\u503c\u5982\u4e0b\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u6570\u636e\u7c7b\u578b<\/th>\n<th>\u96f6\u503c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>DATE<\/td>\n<td>\\&#8217;0000-00-00\\&#8217;<\/td>\n<\/tr>\n<tr>\n<td>TIME<\/td>\n<td>\\&#8217;00:00:00\\&#8217;<\/td>\n<\/tr>\n<tr>\n<td>DATETIME<\/td>\n<td>\\&#8217;0000-00-00 00:00:00\\&#8217;<\/td>\n<\/tr>\n<tr>\n<td>TIMESTAMP<\/td>\n<td>\\&#8217;0000-00-00 00:00:00\\&#8217;<\/td>\n<\/tr>\n<tr>\n<td>YEAR<\/td>\n<td>\\&#8217;0000\\&#8217;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5>\u65f6\u95f4\u65e5\u671f\u51fd\u6570\uff1a<\/h5>\n<ul>\n<li>NOW()\uff0c\u83b7\u53d6\u5f53\u524d\u65e5\u671f\u548c\u65f6\u95f4<\/li>\n<li>CURRENT_TIMESTAMP\uff0c\u83b7\u53d6\u5f53\u524d\u65e5\u671f\u548c\u65f6\u95f4<\/li>\n<li>LOCALTIME\uff0c\u83b7\u53d6\u5f53\u524d\u65e5\u671f\u548c\u65f6\u95f4<\/li>\n<li>LOCALTIME()\uff0c\u83b7\u53d6\u5f53\u524d\u65e5\u671f\u548c\u65f6\u95f4<\/li>\n<li>LOCALTIMESTAMP\uff0c\u83b7\u53d6\u5f53\u524d\u65e5\u671f\u548c\u65f6\u95f4<\/li>\n<li>LOCALTIMESTAMP()\uff0c\u83b7\u53d6\u5f53\u524d\u65e5\u671f\u548c\u65f6\u95f4<\/li>\n<li>YEAR()\uff0c\u83b7\u53d6\u5e74<\/li>\n<li>MONTH()\uff0c\u83b7\u53d6\u6708<\/li>\n<li>DAY()\uff0c\u83b7\u53d6\u5929<\/li>\n<li>HOUR()\uff0c\u83b7\u53d6\u65f6<\/li>\n<li>MINUTE()\uff0c\u83b7\u53d6\u5206<\/li>\n<li>SECOND()\uff0c\u83b7\u53d6\u79d2<\/li>\n<li>TIME()\uff0c\u83b7\u53d6\u65f6\u95f4<\/li>\n<li>DATE()\uff0c\u83b7\u53d6\u65e5\u671f<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u65f6\u95f4\u548c\u65e5\u671f\u662f\u6570\u636e\u5e93\u7684\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c\u4e5f\u662f\u4f7f\u7528\u8f83\u591a\u7684\u4e00\u7c7b\u6570\u636e\u7c7b\u578b\uff0c\u4e3b\u8981\u5305\u62ec\u65f6\u95f4\u6233\u3001\u65e5\u671f\u3001\u5e74\u7b49\u3002 \u65e5\u671f\u548c\u65e5\u671f\u7c7b\u578b\uff1a  &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=5360\"> <span class=\"screen-reader-text\">MySQL\u6570\u636e\u7c7b\u578b-\u65f6\u95f4\u548c\u65e5\u671f<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[90,88],"tags":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"mailpoet_newsletter_max":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false,"shop_catalog":false,"shop_single":false,"shop_thumbnail":false},"uagb_author_info":{"display_name":"weijing","author_link":"http:\/\/www.weijing.co\/?author=4"},"uagb_comment_info":0,"uagb_excerpt":"\u65f6\u95f4\u548c\u65e5\u671f\u662f\u6570\u636e\u5e93\u7684\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c\u4e5f\u662f\u4f7f\u7528\u8f83\u591a\u7684\u4e00\u7c7b\u6570\u636e\u7c7b\u578b\uff0c\u4e3b\u8981\u5305\u62ec\u65f6\u95f4\u6233\u3001\u65e5\u671f\u3001\u5e74\u7b49\u3002 \u65e5\u671f\u548c\u65e5\u671f\u7c7b\u578b\uff1a &hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5360"}],"collection":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5360"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5360\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5360"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}