{"id":172831,"date":"2024-11-07T15:26:21","date_gmt":"2024-11-07T07:26:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/172831\/"},"modified":"2024-11-07T15:26:22","modified_gmt":"2024-11-07T07:26:22","slug":"%e5%a6%82%e4%bd%95%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ad%97%e6%ae%b5%e5%90%8d%e7%a8%b1%e5%8f%8a%e7%9b%b8%e9%97%9c%e8%a8%bb%e8%a7%a3%e4%bf%a1%e6%81%af-%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/172831\/","title":{"rendered":"\u5982\u4f55\u67e5\u8a62\u6578\u64da\u5eab\u5b57\u6bb5\u540d\u7a31\u53ca\u76f8\u95dc\u8a3b\u89e3\u4fe1\u606f (\u67e5\u8a62\u6578\u64da\u5eab\u5b57\u6bb5\u540d\u7a31\u548c\u8a3b\u89e3)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ad%97%e6%ae%b5%e5%90%8d%e7%a8%b1%e5%8f%8a%e7%9b%b8%e9%97%9c%e8%a8%bb%e8%a7%a3%e4%bf%a1%e6%81%af-EizjHoDvzm\">\u5982\u4f55\u67e5\u8a62\u6578\u64da\u5eab\u5b57\u6bb5\u540d\u7a31\u53ca\u76f8\u95dc\u8a3b\u89e3\u4fe1\u606f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u4e86\u89e3\u6578\u64da\u5eab\u7684\u7d50\u69cb\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7279\u5225\u662f\u7576\u6211\u5011\u9700\u8981\u67e5\u8a62\u6578\u64da\u5eab\u4e2d\u7684\u5b57\u6bb5\u540d\u7a31\u53ca\u5176\u76f8\u95dc\u8a3b\u89e3\u4fe1\u606f\u6642\uff0c\u9019\u4e0d\u50c5\u80fd\u5e6b\u52a9\u6211\u5011\u66f4\u597d\u5730\u7406\u89e3\u6578\u64da\u7684\u542b\u7fa9\uff0c\u9084\u80fd\u5728\u958b\u767c\u548c\u7dad\u8b77\u904e\u7a0b\u4e2d\u63d0\u9ad8\u6548\u7387\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u67e5\u8a62\u5b57\u6bb5\u540d\u7a31\u53ca\u5176\u8a3b\u89e3\u4fe1\u606f\u3002<\/p>\n<h2 id=\"1-mysql%e6%95%b8%e6%93%9a%e5%ba%ab-EizjHoDvzm\">1. MySQL\u6578\u64da\u5eab<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u67e5\u8a62\u7279\u5b9a\u6578\u64da\u8868\u7684\u5b57\u6bb5\u540d\u7a31\u53ca\u5176\u8a3b\u89e3\u4fe1\u606f\uff1a<\/p>\n<pre><code>SHOW FULL COLUMNS FROM \u8868\u540d;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u6703\u8fd4\u56de\u8a72\u8868\u4e2d\u6240\u6709\u5b57\u6bb5\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5305\u62ec\u5b57\u6bb5\u540d\u7a31\u3001\u6578\u64da\u985e\u578b\u3001\u662f\u5426\u53ef\u4ee5\u70baNULL\u3001\u9ed8\u8a8d\u503c\u4ee5\u53ca\u8a3b\u89e3\u7b49\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SHOW FULL COLUMNS FROM users;<\/code><\/pre>\n<p>\u57f7\u884c\u5f8c\uff0c\u5c07\u6703\u986f\u793a\u985e\u4f3c\u4ee5\u4e0b\u7684\u7d50\u679c\uff1a<\/p>\n<ul>\n<li>Field: id<\/li>\n<li>Type: int(11)<\/li>\n<li>Collation: NULL<\/li>\n<li>Null: NO<\/li>\n<li>Key: PRI<\/li>\n<li>Default: NULL<\/li>\n<li>Extra: auto_increment<\/li>\n<li>Comment: \u7528\u6236ID<\/li>\n<\/ul>\n<h2 id=\"2-postgresql%e6%95%b8%e6%93%9a%e5%ba%ab-EizjHoDvzm\">2. PostgreSQL\u6578\u64da\u5eab<\/h2>\n<p>\u5728PostgreSQL\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u7372\u53d6\u5b57\u6bb5\u540d\u7a31\u53ca\u5176\u8a3b\u89e3\uff1a<\/p>\n<pre><code>SELECT column_name, \n              col_description((table_name::regclass)::oid, ordinal_position) AS comment \nFROM information_schema.columns \nWHERE table_name = '\u8868\u540d';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6307\u5b9a\u8868\u7684\u6240\u6709\u5b57\u6bb5\u540d\u7a31\u53ca\u5176\u8a3b\u89e3\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT column_name, \n              col_description((users::regclass)::oid, ordinal_position) AS comment \nFROM information_schema.columns \nWHERE table_name = 'users';<\/code><\/pre>\n<h2 id=\"3-sql-server%e6%95%b8%e6%93%9a%e5%ba%ab-EizjHoDvzm\">3. SQL Server\u6578\u64da\u5eab<\/h2>\n<p>\u5728SQL Server\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u7372\u53d6\u5b57\u6bb5\u540d\u7a31\u53ca\u5176\u8a3b\u89e3\uff1a<\/p>\n<pre><code>SELECT COLUMN_NAME, \n              COLUMNPROPERTY(OBJECT_ID('\u8868\u540d'), COLUMN_NAME, 'MS_Description') AS Comment \nFROM INFORMATION_SCHEMA.COLUMNS \nWHERE TABLE_NAME = '\u8868\u540d';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6307\u5b9a\u8868\u7684\u6240\u6709\u5b57\u6bb5\u540d\u7a31\u53ca\u5176\u8a3b\u89e3\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT COLUMN_NAME, \n              COLUMNPROPERTY(OBJECT_ID('users'), COLUMN_NAME, 'MS_Description') AS Comment \nFROM INFORMATION_SCHEMA.COLUMNS \nWHERE TABLE_NAME = 'users';<\/code><\/pre>\n<h2 id=\"4-oracle%e6%95%b8%e6%93%9a%e5%ba%ab-EizjHoDvzm\">4. Oracle\u6578\u64da\u5eab<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u7372\u53d6\u5b57\u6bb5\u540d\u7a31\u53ca\u5176\u8a3b\u89e3\uff1a<\/p>\n<pre><code>SELECT column_name, comments \nFROM user_col_comments \nWHERE table_name = '\u8868\u540d';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6307\u5b9a\u8868\u7684\u6240\u6709\u5b57\u6bb5\u540d\u7a31\u53ca\u5176\u8a3b\u89e3\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT column_name, comments \nFROM user_col_comments \nWHERE table_name = 'USERS';<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-EizjHoDvzm\">\u7e3d\u7d50<\/h2>\n<p>\u67e5\u8a62\u6578\u64da\u5eab\u5b57\u6bb5\u540d\u7a31\u53ca\u76f8\u95dc\u8a3b\u89e3\u4fe1\u606f\u662f\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u7684\u4e00\u500b\u57fa\u672c\u64cd\u4f5c\u3002\u7121\u8ad6\u662f\u4f7f\u7528MySQL\u3001PostgreSQL\u3001SQL Server\u9084\u662fOracle\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u5730\u67e5\u8a62\u9019\u4e9b\u4fe1\u606f\u90fd\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u66f4\u597d\u5730\u7406\u89e3\u6578\u64da\u7d50\u69cb\uff0c\u5f9e\u800c\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u670d\u52d9\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u67e5\u8a62\u6578\u64da\u5eab\u5b57\u6bb5\u540d\u7a31\u53ca\u5176\u76f8\u95dc\u8a3b\u89e3\u4fe1\u606f\uff0c\u8f15\u9b06\u7372\u53d6\u6578\u64da\u7d50\u69cb\u7684\u8a73\u7d30\u8aaa\u660e\u548c\u4f7f\u7528\u6307\u5357\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-172831","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172831","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=172831"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172831\/revisions"}],"predecessor-version":[{"id":172832,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172831\/revisions\/172832"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=172831"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=172831"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=172831"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}