{"id":196147,"date":"2024-11-13T20:52:20","date_gmt":"2024-11-13T12:52:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/196147\/"},"modified":"2024-11-13T20:52:21","modified_gmt":"2024-11-13T12:52:21","slug":"%e6%8e%8c%e6%8f%a1sql%e5%9b%9b%e6%a2%9d%e6%9c%80%e5%9f%ba%e6%9c%ac%e7%9a%84%e6%95%b8%e6%93%9a%e6%93%8d%e4%bd%9c%e8%aa%9e%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/196147\/","title":{"rendered":"\u638c\u63e1SQL\u56db\u689d\u6700\u57fa\u672c\u7684\u6578\u64da\u64cd\u4f5c\u8a9e\u53e5"},"content":{"rendered":"

\u638c\u63e1SQL\u56db\u689d\u6700\u57fa\u672c\u7684\u6578\u64da\u64cd\u4f5c\u8a9e\u53e5<\/h1>\n

\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u7684\u4e3b\u8981\u5de5\u5177\u3002\u7121\u8ad6\u662f\u958b\u767c\u8005\u3001\u6578\u64da\u5206\u6790\u5e2b\u9084\u662f\u7cfb\u7d71\u7ba1\u7406\u54e1\uff0c\u638c\u63e1SQL\u7684\u57fa\u672c\u64cd\u4f5c\u8a9e\u53e5\u90fd\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u56db\u689d\u6700\u57fa\u672c\u7684SQL\u6578\u64da\u64cd\u4f5c\u8a9e\u53e5\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528SQL\u3002<\/p>\n

1. SELECT \u8a9e\u53e5<\/h2>\n

SELECT \u8a9e\u53e5\u662f\u7528\u65bc\u5f9e\u6578\u64da\u5eab\u4e2d\u67e5\u8a62\u6578\u64da\u7684\u57fa\u672c\u8a9e\u53e5\u3002\u5b83\u53ef\u4ee5\u9078\u64c7\u7279\u5b9a\u7684\u5217\u6216\u6574\u500b\u8868\u4e2d\u7684\u6578\u64da\u3002\u4ee5\u4e0b\u662fSELECT\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n

SELECT column1, column2, ...\nFROM table_name\nWHERE condition;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201ccustomers\u201d\u7684\u8868\uff0c\u60f3\u8981\u67e5\u8a62\u6240\u6709\u5ba2\u6236\u7684\u59d3\u540d\u548c\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n
SELECT name, email\nFROM customers;<\/code><\/pre>\n
2. INSERT \u8a9e\u53e5<\/h2>\n
INSERT \u8a9e\u53e5\u7528\u65bc\u5411\u6578\u64da\u5eab\u8868\u4e2d\u63d2\u5165\u65b0\u6578\u64da\u3002\u9019\u662f\u5c07\u6578\u64da\u6dfb\u52a0\u5230\u8868\u4e2d\u7684\u57fa\u672c\u65b9\u6cd5\u3002INSERT\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n
INSERT INTO table_name (column1, column2, ...)\nVALUES (value1, value2, ...);<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u5411\u201ccustomers\u201d\u8868\u4e2d\u6dfb\u52a0\u4e00\u4f4d\u65b0\u5ba2\u6236\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n
INSERT INTO customers (name, email)\nVALUES ('\u5f35\u4e09', 'zhangsan@example.com');<\/code><\/pre>\n
3. UPDATE \u8a9e\u53e5<\/h2>\n
UPDATE \u8a9e\u53e5\u7528\u65bc\u4fee\u6539\u6578\u64da\u5eab\u8868\u4e2d\u5df2\u5b58\u5728\u7684\u6578\u64da\u3002\u9019\u662f\u4e00\u500b\u975e\u5e38\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u56e0\u70ba\u6578\u64da\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\u53ef\u80fd\u6703\u767c\u751f\u8b8a\u5316\u3002UPDATE\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n
UPDATE table_name\nSET column1 = value1, column2 = value2, ...\nWHERE condition;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u66f4\u65b0\u201ccustomers\u201d\u8868\u4e2d\u67d0\u4f4d\u5ba2\u6236\u7684\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n
UPDATE customers\nSET email = 'newemail@example.com'\nWHERE name = '\u5f35\u4e09';<\/code><\/pre>\n
4. DELETE \u8a9e\u53e5<\/h2>\n
DELETE \u8a9e\u53e5\u7528\u65bc\u5f9e\u6578\u64da\u5eab\u8868\u4e2d\u522a\u9664\u6578\u64da\u3002\u9019\u662f\u4e00\u500b\u9700\u8981\u8b39\u614e\u4f7f\u7528\u7684\u64cd\u4f5c\uff0c\u56e0\u70ba\u4e00\u65e6\u522a\u9664\u6578\u64da\uff0c\u5c07\u7121\u6cd5\u6062\u5fa9\u3002DELETE\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n
DELETE FROM table_name\nWHERE condition;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u5f9e\u201ccustomers\u201d\u8868\u4e2d\u522a\u9664\u540d\u70ba\u201c\u5f35\u4e09\u201d\u7684\u5ba2\u6236\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n
DELETE FROM customers\nWHERE name = '\u5f35\u4e09';<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u638c\u63e1\u9019\u56db\u689d\u57fa\u672c\u7684SQL\u6578\u64da\u64cd\u4f5c\u8a9e\u53e5\uff08SELECT\u3001INSERT\u3001UPDATE\u3001DELETE\uff09\u662f\u5b78\u7fd2\u548c\u4f7f\u7528SQL\u7684\u57fa\u790e\u3002\u9019\u4e9b\u8a9e\u53e5\u4e0d\u50c5\u80fd\u5e6b\u52a9\u7528\u6236\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\uff0c\u9084\u80fd\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u3002\u96a8\u8457\u5c0dSQL\u7684\u6df1\u5165\u4e86\u89e3\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u9032\u4e00\u6b65\u63a2\u7d22\u66f4\u8907\u96dc\u7684\u67e5\u8a62\u548c\u6578\u64da\u64cd\u4f5c\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u548c\u64cd\u4f5c\u6709\u66f4\u9ad8\u7684\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u6216\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u63d0\u5347\u60a8\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\u3002\u7121\u8ad6\u662f\u500b\u4eba\u9805\u76ee\u9084\u662f\u5546\u696d\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u670d\u52d9\u5668\u90fd\u80fd\u70ba\u60a8\u7684\u6578\u64da\u7ba1\u7406\u63d0\u4f9b\u5f37\u6709\u529b\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u638c\u63e1SQL\u56db\u689d\u57fa\u672c\u6578\u64da\u64cd\u4f5c\u8a9e\u53e5\uff0c\u8f15\u9b06\u9032\u884c\u6578\u64da\u67e5\u8a62\u3001\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\uff0c\u63d0\u5347\u6578\u64da\u5eab\u7ba1\u7406\u6280\u80fd\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-196147","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196147","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=196147"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196147\/revisions"}],"predecessor-version":[{"id":196148,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196147\/revisions\/196148"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=196147"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=196147"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=196147"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}