{"id":5910,"date":"2024-11-14T08:03:57","date_gmt":"2024-11-14T00:03:57","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5910\/"},"modified":"2024-11-14T08:03:57","modified_gmt":"2024-11-14T00:03:57","slug":"sql%e7%aa%97%e5%8f%a3%e6%80%8e%e4%b9%88%e6%9f%a5%e7%9c%8b%e8%a1%a8%e7%bb%93%e6%9e%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5910\/","title":{"rendered":"sql\u7a97\u53e3\u600e\u4e48\u67e5\u770b\u8868\u7ed3\u6784"},"content":{"rendered":"<blockquote><p>\n  \u5728 sql \u7a97\u53e3\u4e2d\u67e5\u770b\u8868\u7ed3\u6784\u7684\u65b9\u6cd5\u5982\u4e0b\uff1a\u6253\u5f00 sql \u7a97\u53e3\u8fd0\u884c describe \u8bed\u53e5\uff08\u9002\u7528\u4e8e mysql \u548c mariadb\uff09\u8fd0\u884c d \u547d\u4ee4\uff08\u9002\u7528\u4e8e postgresql\uff09\u8fd9\u6837\u5c31\u80fd\u663e\u793a\u8868\u7684\u5b57\u6bb5\u540d\u79f0\u3001\u6570\u636e\u7c7b\u578b\u3001\u7ea6\u675f\u3001\u9ed8\u8ba4\u503c\u548c\u6ce8\u91ca\u7b49\u4fe1\u606f\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202406\/03\/2024060322123729131.jpg\" class=\"aligncenter\" title=\"sql\u7a97\u53e3\u600e\u4e48\u67e5\u770b\u8868\u7ed3\u6784\u63d2\u56fe\" alt=\"sql\u7a97\u53e3\u600e\u4e48\u67e5\u770b\u8868\u7ed3\u6784\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 SQL \u7a97\u53e3\u4e2d\u67e5\u770b\u8868\u7ed3\u6784<\/strong><\/p>\n<p>\u5728 SQL \u7a97\u53e3\u4e2d\u67e5\u770b\u8868\u7ed3\u6784\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n<p><strong>1. \u6253\u5f00 SQL \u7a97\u53e3<\/strong><\/p>\n<ul>\n<li>\u5728\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08\u5982 MySQL Workbench \u6216 PostgreSQL\uff09\u4e2d\u6253\u5f00 SQL \u7a97\u53e3\u3002<\/li>\n<\/ul>\n<p><strong>2. \u8fd0\u884c DESCRIBE \u8bed\u53e5<\/strong><\/p>\n<ul>\n<li>\u952e\u5165\u4ee5\u4e0b\u8bed\u53e5\uff0c\u5176\u4e2d table_name \u662f\u60a8\u8981\u68c0\u67e5\u5176\u7ed3\u6784\u7684\u8868\u540d\uff1a<\/li>\n<\/ul>\n<pre>DESCRIBE table_name;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>3. \u8fd0\u884c d \u547d\u4ee4\uff08\u9488\u5bf9 PostgreSQL\uff09<\/strong><\/p>\n<ul>\n<li>\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662f PostgreSQL\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528 d \u547d\u4ee4\u67e5\u770b\u8868\u7ed3\u6784\uff1a<\/li>\n<\/ul>\n<pre>d table_name;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u7ed3\u679c\u89e3\u91ca\uff1a<\/strong><\/p>\n<p>\u6267\u884c\u4e0a\u8ff0\u8bed\u53e5\u540e\uff0cSQL \u7a97\u53e3\u5c06\u663e\u793a\u4e00\u4e2a\u8868\uff0c\u5176\u4e2d\u5305\u542b\u6709\u5173\u8868\u7ed3\u6784\u7684\u4ee5\u4e0b\u4fe1\u606f\uff1a<\/p>\n<ul>\n<li>\u5b57\u6bb5\u540d\u79f0<\/li>\n<li>\u6570\u636e\u7c7b\u578b<\/li>\n<li>\u7ea6\u675f\uff08\u5982\u4e3b\u952e\u3001\u5916\u952e\u3001\u975e\u7a7a\uff09<\/li>\n<li>\u9ed8\u8ba4\u503c<\/li>\n<li>\u6ce8\u91ca\uff08\u5982\u679c\u5b58\u5728\uff09<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u8981\u67e5\u770b\u540d\u4e3a Customers \u7684\u8868\u7ed3\u6784\uff0c\u5219\u53ef\u4ee5\u8fd0\u884c\u4ee5\u4e0b\u8bed\u53e5\uff1a<\/p>\n<pre>DESCRIBE Customers;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8f93\u51fa\u5c06\u7c7b\u4f3c\u4e8e\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<pre>+--------+---------+------+-----+---------+-------+\n| Field   | Type     | Null | Key | Default | Extra |\n+--------+---------+------+-----+---------+-------+\n| id      | int(11)  | NO   | PRI | NULL    | auto_increment |\n| name    | varchar(255) | NO   |     | NULL    |       |\n| email   | varchar(255) | YES  |     | NULL    |       |\n| phone   | varchar(255) | YES  |     | NULL    |       |\n| address | varchar(255) | NO   |     | NULL    |       |\n+--------+---------+------+-----+---------+-------+<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u544a\u8bc9\u6211\u4eec Customers \u8868\u5177\u6709\u4ee5\u4e0b\u7ed3\u6784\uff1a<\/p>\n<ul>\n<li>\u5b57\u6bb5 id \u662f\u4e00\u4e2a\u4e3b\u952e\uff0c\u7c7b\u578b\u4e3a int(11)\uff0c\u4e0d\u5141\u8bb8\u4e3a\u7a7a\uff0c\u5e76\u4e14\u81ea\u52a8\u9012\u589e\u3002<\/li>\n<li>\u5b57\u6bb5 name \u662f\u4e00\u4e2a\u975e\u7a7a varchar(255) \u5b57\u7b26\u4e32\u3002<\/li>\n<li>\u5b57\u6bb5 email \u662f\u4e00\u4e2a\u53ef\u4e3a\u7a7a varchar(255) \u5b57\u7b26\u4e32\u3002<\/li>\n<li>\u5b57\u6bb5 phone \u662f\u4e00\u4e2a\u53ef\u4e3a\u7a7a varchar(255) \u5b57\u7b26\u4e32\u3002<\/li>\n<li>\u5b57\u6bb5 address \u662f\u4e00\u4e2a\u975e\u7a7a varchar(255) \u5b57\u7b26\u4e32\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u7a97\u53e3\u600e\u4e48\u67e5\u770b\u8868\u7ed3\u6784\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>\u5728 sql \u7a97\u53e3\u4e2d\u67e5\u770b\u8868\u7ed3\u6784\u7684\u65b9\u6cd5\u5982\u4e0b\uff1a\u6253\u5f00 sql \u7a97\u53e3\u8fd0\u884c describe \u8bed\u53e5\uff08\u9002\u7528\u4e8e mysql \u548c mariadb\uff09\u8fd0\u884c d \u547d\u4ee4\uff08\u9002\u7528\u4e8e postgresql\uff09\u8fd9\u6837\u5c31\u80fd\u663e\u793a\u8868\u7684\u5b57\u6bb5\u540d\u79f0\u3001\u6570\u636e\u7c7b\u578b\u3001\u7ea6\u675f\u3001\u9ed8\u8ba4\u503c\u548c\u6ce8\u91ca\u7b49\u4fe1\u606f\u3002 \u5982\u4f55\u5728 SQL \u7a97\u53e3\u4e2d\u67e5\u770b\u8868\u7ed3\u6784 \u5728 SQL \u7a97\u53e3\u4e2d\u67e5\u770b\u8868\u7ed3\u6784\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u51e0\u4e2a\u6b65\u9aa4\uff1a 1. \u6253\u5f00 SQL \u7a97\u53e3 \u5728\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08\u5982 MySQL Workbench \u6216 PostgreSQL\uff09\u4e2d\u6253\u5f00 SQL \u7a97\u53e3\u3002 2. \u8fd0\u884c DESCRIBE \u8bed\u53e5 \u952e\u5165\u4ee5\u4e0b\u8bed\u53e5\uff0c\u5176\u4e2d table_name \u662f\u60a8\u8981\u68c0\u67e5\u5176\u7ed3\u6784\u7684\u8868\u540d\uff1a DESCRIBE table_name; \u767b\u5f55\u540e\u590d\u5236 3. \u8fd0\u884c d \u547d\u4ee4\uff08\u9488\u5bf9 PostgreSQL\uff09 \u5982\u679c\u60a8\u4f7f\u7528\u7684\u662f PostgreSQL\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528 d \u547d\u4ee4\u67e5\u770b\u8868\u7ed3\u6784\uff1a d table_name; \u767b\u5f55\u540e\u590d\u5236 \u7ed3\u679c\u89e3\u91ca\uff1a \u6267\u884c\u4e0a\u8ff0\u8bed\u53e5\u540e\uff0cSQL \u7a97\u53e3\u5c06\u663e\u793a\u4e00\u4e2a\u8868\uff0c\u5176\u4e2d\u5305\u542b\u6709\u5173\u8868\u7ed3\u6784\u7684\u4ee5\u4e0b\u4fe1\u606f\uff1a [&hellip;]<\/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-5910","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5910","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=5910"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5910\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5910"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5910"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5910"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}