{"id":5652,"date":"2024-11-14T13:45:49","date_gmt":"2024-11-14T05:45:49","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5652\/"},"modified":"2024-11-14T13:45:49","modified_gmt":"2024-11-14T05:45:49","slug":"sql%e8%bd%ac%e4%b9%89%e5%ad%97%e7%ac%a6%e6%80%8e%e4%b9%88%e6%89%93","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5652\/","title":{"rendered":"sql\u8f6c\u4e49\u5b57\u7b26\u600e\u4e48\u6253"},"content":{"rendered":"<blockquote><p>\n  sql \u8f6c\u4e49\u5b57\u7b26\u7684\u8f93\u5165\u6b65\u9aa4\uff1a\u8f93\u5165\u53cd\u659c\u6760\uff08\uff09\uff1b\u8f93\u5165\u8f6c\u4e49\u5b57\u7b26\u4ee3\u7801\uff0c\u5982 &#8221; &#8221; \u8868\u793a\u6362\u884c\uff1b\u6309\u4e0b\u56de\u8f66\u952e\u6216\u5206\u53f7\u952e\u6267\u884c\u8bed\u53e5\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/30\/2024053019513982884.jpg\" class=\"aligncenter\" title=\"sql\u8f6c\u4e49\u5b57\u7b26\u600e\u4e48\u6253\u63d2\u56fe\" alt=\"sql\u8f6c\u4e49\u5b57\u7b26\u600e\u4e48\u6253\u63d2\u56fe\" \/><\/p>\n<p><strong>SQL \u8f6c\u4e49\u5b57\u7b26\u5982\u4f55\u8f93\u5165<\/strong><\/p>\n<p>\u5728 SQL \u8bed\u53e5\u4e2d\uff0c\u8f6c\u4e49\u5b57\u7b26\u662f\u7528\u4e8e\u6307\u793a\u7279\u6b8a\u5b57\u7b26\u6216\u63a7\u5236\u7b26\u7684\u5b57\u7b26\u3002\u8f93\u5165\u8f6c\u4e49\u5b57\u7b26\u65f6\uff0c\u9700\u8981\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<p><strong>1. \u8f93\u5165\u53cd\u659c\u6760\uff08\uff09<\/strong><\/p>\n<p>\u53cd\u659c\u6760\u662f\u6240\u6709\u8f6c\u4e49\u5b57\u7b26\u7684\u901a\u7528\u524d\u7f00\u3002\u5b83\u544a\u8bc9 SQL \u89e3\u91ca\u5668\u63a5\u4e0b\u6765\u51fa\u73b0\u7684\u5b57\u7b26\u662f\u4e00\u4e2a\u8f6c\u4e49\u5b57\u7b26\u3002<\/p>\n<p><strong>2. \u8f93\u5165\u8f6c\u4e49\u5b57\u7b26\u4ee3\u7801<\/strong><\/p>\n<p>\u5728\u53cd\u659c\u6760\u540e\uff0c\u8f93\u5165\u8f6c\u4e49\u5b57\u7b26\u7684\u4ee3\u7801\u3002\u5e38\u89c1\u7684\u8f6c\u4e49\u5b57\u7b26\u4ee3\u7801\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>n\uff1a\u6362\u884c\u7b26<\/li>\n<li>r\uff1a\u56de\u8f66\u7b26<\/li>\n<li>t\uff1a\u5236\u8868\u7b26<\/li>\n<li>&#8220;\uff1a\u53cc\u5f15\u53f7<\/li>\n<li>&#8216;\uff1a\u5355\u5f15\u53f7<\/li>\n<li>\uff1a\u53cd\u659c\u6760<\/li>\n<\/ul>\n<p><strong>3. \u6309\u4e0b\u56de\u8f66\u952e\u6216\u5206\u53f7\u952e<\/strong><\/p>\n<p>\u8f93\u5165\u8f6c\u4e49\u5b57\u7b26\u4ee3\u7801\u540e\uff0c\u6309\u56de\u8f66\u952e\u6216\u5206\u53f7\u952e\u6765\u6267\u884c SQL \u8bed\u53e5\u3002<\/p>\n<p><strong>4. \u4ee5\u4e0b\u793a\u4f8b\u8bf4\u660e\u4e86\u5982\u4f55\u8f93\u5165\u8f6c\u4e49\u5b57\u7b26\uff1a<\/strong><\/p>\n<ul>\n<li> \uff1a\u63d2\u5165\u6362\u884c\u7b26<\/li>\n<li> \uff1a\u63d2\u5165\u56de\u8f66\u7b26<\/li>\n<li>SELECT &#8216; Hello, world!&#8217;\uff1a\u8fd4\u56de\u6587\u672c\u5b57\u7b26\u4e32 &#8220;Hello, world!&#8221;\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u6362\u884c\u7b26<\/li>\n<li>UPDATE table SET column = &#8216; New value&#8217;\uff1a\u66f4\u65b0\u8868\u4e2d\u4e00\u5217\u7684\u503c\uff0c\u5e76\u5728\u503c\u4e2d\u5305\u542b\u56de\u8f66\u7b26\u548c\u6362\u884c\u7b26<\/li>\n<\/ul>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>\u8f6c\u4e49\u5b57\u7b26\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u3002<\/li>\n<li>\u53cd\u659c\u6760\u672c\u8eab\u4e5f\u53ef\u4ee5\u901a\u8fc7\u8f93\u5165\u4e24\u4e2a\u53cd\u659c\u6760\uff08\uff09\u6765\u8f6c\u4e49\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u8f6c\u4e49\u5b57\u7b26\u600e\u4e48\u6253\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>sql \u8f6c\u4e49\u5b57\u7b26\u7684\u8f93\u5165\u6b65\u9aa4\uff1a\u8f93\u5165\u53cd\u659c\u6760\uff08\uff09\uff1b\u8f93\u5165\u8f6c\u4e49\u5b57\u7b26\u4ee3\u7801\uff0c\u5982 &#8221; &#8221; \u8868\u793a\u6362\u884c\uff1b\u6309\u4e0b\u56de\u8f66\u952e\u6216\u5206\u53f7\u952e\u6267\u884c\u8bed\u53e5\u3002 SQL \u8f6c\u4e49\u5b57\u7b26\u5982\u4f55\u8f93\u5165 \u5728 SQL \u8bed\u53e5\u4e2d\uff0c\u8f6c\u4e49\u5b57\u7b26\u662f\u7528\u4e8e\u6307\u793a\u7279\u6b8a\u5b57\u7b26\u6216\u63a7\u5236\u7b26\u7684\u5b57\u7b26\u3002\u8f93\u5165\u8f6c\u4e49\u5b57\u7b26\u65f6\uff0c\u9700\u8981\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a 1. \u8f93\u5165\u53cd\u659c\u6760\uff08\uff09 \u53cd\u659c\u6760\u662f\u6240\u6709\u8f6c\u4e49\u5b57\u7b26\u7684\u901a\u7528\u524d\u7f00\u3002\u5b83\u544a\u8bc9 SQL \u89e3\u91ca\u5668\u63a5\u4e0b\u6765\u51fa\u73b0\u7684\u5b57\u7b26\u662f\u4e00\u4e2a\u8f6c\u4e49\u5b57\u7b26\u3002 2. \u8f93\u5165\u8f6c\u4e49\u5b57\u7b26\u4ee3\u7801 \u5728\u53cd\u659c\u6760\u540e\uff0c\u8f93\u5165\u8f6c\u4e49\u5b57\u7b26\u7684\u4ee3\u7801\u3002\u5e38\u89c1\u7684\u8f6c\u4e49\u5b57\u7b26\u4ee3\u7801\u5305\u62ec\uff1a n\uff1a\u6362\u884c\u7b26 r\uff1a\u56de\u8f66\u7b26 t\uff1a\u5236\u8868\u7b26 &#8220;\uff1a\u53cc\u5f15\u53f7 &#8216;\uff1a\u5355\u5f15\u53f7 \uff1a\u53cd\u659c\u6760 3. \u6309\u4e0b\u56de\u8f66\u952e\u6216\u5206\u53f7\u952e \u8f93\u5165\u8f6c\u4e49\u5b57\u7b26\u4ee3\u7801\u540e\uff0c\u6309\u56de\u8f66\u952e\u6216\u5206\u53f7\u952e\u6765\u6267\u884c SQL \u8bed\u53e5\u3002 4. \u4ee5\u4e0b\u793a\u4f8b\u8bf4\u660e\u4e86\u5982\u4f55\u8f93\u5165\u8f6c\u4e49\u5b57\u7b26\uff1a \uff1a\u63d2\u5165\u6362\u884c\u7b26 \uff1a\u63d2\u5165\u56de\u8f66\u7b26 SELECT &#8216; Hello, world!&#8217;\uff1a\u8fd4\u56de\u6587\u672c\u5b57\u7b26\u4e32 &#8220;Hello, world!&#8221;\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u6362\u884c\u7b26 UPDATE table SET column = &#8216; New value&#8217;\uff1a\u66f4\u65b0\u8868\u4e2d\u4e00\u5217\u7684\u503c\uff0c\u5e76\u5728\u503c\u4e2d\u5305\u542b\u56de\u8f66\u7b26\u548c\u6362\u884c\u7b26 \u6ce8\u610f\uff1a \u8f6c\u4e49\u5b57\u7b26\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u3002 \u53cd\u659c\u6760\u672c\u8eab\u4e5f\u53ef\u4ee5\u901a\u8fc7\u8f93\u5165\u4e24\u4e2a\u53cd\u659c\u6760\uff08\uff09\u6765\u8f6c\u4e49\u3002 \u4ee5\u4e0a\u5c31\u662fsql\u8f6c\u4e49\u5b57\u7b26\u600e\u4e48\u6253\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5652","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5652","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5652"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5652\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5652"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5652"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}