{"id":5209,"date":"2024-11-14T11:44:58","date_gmt":"2024-11-14T03:44:58","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5209\/"},"modified":"2024-11-14T11:44:58","modified_gmt":"2024-11-14T03:44:58","slug":"sql%e6%95%b0%e6%8d%ae%e5%ba%93%e6%80%8e%e4%b9%88%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5209\/","title":{"rendered":"sql\u6570\u636e\u5e93\u600e\u4e48\u7528"},"content":{"rendered":"<blockquote><p>\n  sql\u662f\u4e00\u79cd\u7528\u4e8e\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\u7684\u8bed\u8a00\uff0c\u5141\u8bb8\u7528\u6237\u521b\u5efa\u3001\u66f4\u65b0\u3001\u68c0\u7d22\u548c\u5220\u9664\u6570\u636e\u3002\u5982\u4f55\u4f7f\u7528sql\uff1a1.\u8fde\u63a5\u5230\u6570\u636e\u5e93\uff1b2.\u521b\u5efa\u6570\u636e\u5e93\u548c\u8868\uff1b3.\u63d2\u5165\u6570\u636e\uff1b4.\u68c0\u7d22\u6570\u636e\uff1b5.\u66f4\u65b0\u6570\u636e\uff1b6.\u5220\u9664\u6570\u636e\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/24\/2024052420512538414.jpg\" class=\"aligncenter\" title=\"sql\u6570\u636e\u5e93\u600e\u4e48\u7528\u63d2\u56fe\" alt=\"sql\u6570\u636e\u5e93\u600e\u4e48\u7528\u63d2\u56fe\" \/><\/p>\n<p><strong>SQL \u6570\u636e\u5e93\u5165\u95e8\u6307\u5357<\/strong><\/p>\n<p><strong>\u4ec0\u4e48\u662f SQL\uff1f<\/strong><\/p>\n<p>SQL\uff08\u7ed3\u6784\u5316\u67e5\u8be2\u8bed\u8a00\uff09\u662f\u4e00\u79cd\u7528\u4e8e\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\u7684\u8bed\u8a00\u3002\u5b83\u5141\u8bb8\u7528\u6237\u521b\u5efa\u3001\u66f4\u65b0\u3001\u68c0\u7d22\u548c\u5220\u9664\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002<\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 SQL\uff1f<\/strong><\/p>\n<p><strong>1. \u8fde\u63a5\u5230\u6570\u636e\u5e93<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08\u5982 MySQL\u3001PostgreSQL\uff09\u8fde\u63a5\u5230\u6570\u636e\u5e93\u3002<\/li>\n<li>\u5efa\u7acb\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\uff0c\u63d0\u4f9b\u6570\u636e\u5e93\u540d\u79f0\u3001\u7528\u6237\u540d\u548c\u5bc6\u7801\u3002<\/li>\n<\/ul>\n<p><strong>2. \u521b\u5efa\u6570\u636e\u5e93\u548c\u8868<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 CREATE DATABASE \u8bed\u53e5\u521b\u5efa\u6570\u636e\u5e93\u3002<\/li>\n<li>\u4f7f\u7528 CREATE TABLE \u8bed\u53e5\u521b\u5efa\u8868\uff0c\u6307\u5b9a\u8868\u540d\u3001\u5217\u540d\u548c\u6570\u636e\u7c7b\u578b\u3002<\/li>\n<\/ul>\n<p><strong>3. \u63d2\u5165\u6570\u636e<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 INSERT INTO \u8bed\u53e5\u5c06\u6570\u636e\u63d2\u5165\u8868\u4e2d\u3002<\/li>\n<li>\u6307\u5b9a\u8868\u540d\u3001\u5217\u540d\u548c\u8981\u63d2\u5165\u7684\u5b9e\u9645\u503c\u3002<\/li>\n<\/ul>\n<p><strong>4. \u68c0\u7d22\u6570\u636e<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 SELECT \u8bed\u53e5\u4ece\u8868\u4e2d\u68c0\u7d22\u6570\u636e\u3002<\/li>\n<li>\u6307\u5b9a\u8981\u68c0\u7d22\u7684\u5217\uff0c\u4ee5\u53ca\u4efb\u4f55\u8fc7\u6ee4\u6216\u6392\u5e8f\u6761\u4ef6\u3002<\/li>\n<\/ul>\n<p><strong>5. \u66f4\u65b0\u6570\u636e<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 UPDATE \u8bed\u53e5\u66f4\u65b0\u8868\u4e2d\u7684\u6570\u636e\u3002<\/li>\n<li>\u6307\u5b9a\u8981\u66f4\u65b0\u7684\u5217\u3001\u65b0\u7684\u503c\u4ee5\u53ca\u66f4\u65b0\u6761\u4ef6\u3002<\/li>\n<\/ul>\n<p><strong>6. \u5220\u9664\u6570\u636e<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 DELETE \u8bed\u53e5\u4ece\u8868\u4e2d\u5220\u9664\u6570\u636e\u3002<\/li>\n<li>\u6307\u5b9a\u5220\u9664\u6761\u4ef6\uff0c\u4ee5\u786e\u5b9a\u8981\u5220\u9664\u54ea\u4e9b\u884c\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\u67e5\u8be2<\/strong><\/p>\n<pre>-- \u521b\u5efa\u6570\u636e\u5e93\nCREATE DATABASE my_database;\n\n-- \u521b\u5efa\u8868\nCREATE TABLE users (\n  id INT NOT NULL,\n  name VARCHAR(255),\n  email VARCHAR(255)\n);\n\n-- \u63d2\u5165\u6570\u636e\nINSERT INTO users (id, name, email) VALUES (1, 'John Doe', 'john.doe@example.com');\n\n-- \u68c0\u7d22\u6570\u636e\nSELECT * FROM users WHERE name LIKE '%John%';\n\n-- \u66f4\u65b0\u6570\u636e\nUPDATE users SET email = 'new_email@example.com' WHERE id = 1;\n\n-- \u5220\u9664\u6570\u636e\nDELETE FROM users WHERE id = 2;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u63d0\u793a<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528\u6570\u636e\u7c7b\u578b\u5f3a\u5236\u6765\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li>\u4f7f\u7528\u5916\u952e\u6765\u5efa\u7acb\u8868\u4e4b\u95f4\u7684\u5173\u7cfb\u3002<\/li>\n<li>\u5bf9\u67e5\u8be2\u4f7f\u7528\u7d22\u5f15\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li>\u5b9a\u671f\u5907\u4efd\u6570\u636e\u5e93\u4ee5\u9632\u6b62\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u6570\u636e\u5e93\u600e\u4e48\u7528\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\u662f\u4e00\u79cd\u7528\u4e8e\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\u7684\u8bed\u8a00\uff0c\u5141\u8bb8\u7528\u6237\u521b\u5efa\u3001\u66f4\u65b0\u3001\u68c0\u7d22\u548c\u5220\u9664\u6570\u636e\u3002\u5982\u4f55\u4f7f\u7528sql\uff1a1.\u8fde\u63a5\u5230\u6570\u636e\u5e93\uff1b2.\u521b\u5efa\u6570\u636e\u5e93\u548c\u8868\uff1b3.\u63d2\u5165\u6570\u636e\uff1b4.\u68c0\u7d22\u6570\u636e\uff1b5.\u66f4\u65b0\u6570\u636e\uff1b6.\u5220\u9664\u6570\u636e\u3002 SQL \u6570\u636e\u5e93\u5165\u95e8\u6307\u5357 \u4ec0\u4e48\u662f SQL\uff1f SQL\uff08\u7ed3\u6784\u5316\u67e5\u8be2\u8bed\u8a00\uff09\u662f\u4e00\u79cd\u7528\u4e8e\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\u7684\u8bed\u8a00\u3002\u5b83\u5141\u8bb8\u7528\u6237\u521b\u5efa\u3001\u66f4\u65b0\u3001\u68c0\u7d22\u548c\u5220\u9664\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002 \u5982\u4f55\u4f7f\u7528 SQL\uff1f 1. \u8fde\u63a5\u5230\u6570\u636e\u5e93 \u4f7f\u7528\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08\u5982 MySQL\u3001PostgreSQL\uff09\u8fde\u63a5\u5230\u6570\u636e\u5e93\u3002 \u5efa\u7acb\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\uff0c\u63d0\u4f9b\u6570\u636e\u5e93\u540d\u79f0\u3001\u7528\u6237\u540d\u548c\u5bc6\u7801\u3002 2. \u521b\u5efa\u6570\u636e\u5e93\u548c\u8868 \u4f7f\u7528 CREATE DATABASE \u8bed\u53e5\u521b\u5efa\u6570\u636e\u5e93\u3002 \u4f7f\u7528 CREATE TABLE \u8bed\u53e5\u521b\u5efa\u8868\uff0c\u6307\u5b9a\u8868\u540d\u3001\u5217\u540d\u548c\u6570\u636e\u7c7b\u578b\u3002 3. \u63d2\u5165\u6570\u636e \u4f7f\u7528 INSERT INTO \u8bed\u53e5\u5c06\u6570\u636e\u63d2\u5165\u8868\u4e2d\u3002 \u6307\u5b9a\u8868\u540d\u3001\u5217\u540d\u548c\u8981\u63d2\u5165\u7684\u5b9e\u9645\u503c\u3002 4. \u68c0\u7d22\u6570\u636e \u4f7f\u7528 SELECT \u8bed\u53e5\u4ece\u8868\u4e2d\u68c0\u7d22\u6570\u636e\u3002 \u6307\u5b9a\u8981\u68c0\u7d22\u7684\u5217\uff0c\u4ee5\u53ca\u4efb\u4f55\u8fc7\u6ee4\u6216\u6392\u5e8f\u6761\u4ef6\u3002 5. \u66f4\u65b0\u6570\u636e \u4f7f\u7528 UPDATE \u8bed\u53e5\u66f4\u65b0\u8868\u4e2d\u7684\u6570\u636e\u3002 \u6307\u5b9a\u8981\u66f4\u65b0\u7684\u5217\u3001\u65b0\u7684\u503c\u4ee5\u53ca\u66f4\u65b0\u6761\u4ef6\u3002 6. \u5220\u9664\u6570\u636e \u4f7f\u7528 DELETE \u8bed\u53e5\u4ece\u8868\u4e2d\u5220\u9664\u6570\u636e\u3002 \u6307\u5b9a\u5220\u9664\u6761\u4ef6\uff0c\u4ee5\u786e\u5b9a\u8981\u5220\u9664\u54ea\u4e9b\u884c\u3002 \u793a\u4f8b\u67e5\u8be2 &#8212; \u521b\u5efa\u6570\u636e\u5e93 CREATE DATABASE my_database; &#8212; [&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-5209","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5209","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=5209"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5209\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5209"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5209"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5209"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}