{"id":95130,"date":"2024-10-19T22:29:17","date_gmt":"2024-10-19T14:29:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95130\/"},"modified":"2024-10-19T22:29:17","modified_gmt":"2024-10-19T14:29:17","slug":"oracle%e6%9c%8d%e5%8b%99%e4%b8%ad%e4%be%86%e7%a2%ba%e8%aa%8d%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e5%85%a7%e9%83%a8%e7%9a%84%e6%a7%8b%e9%80%a0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95130\/","title":{"rendered":"Oracle\u670d\u52d9\u4e2d\u4f86\u78ba\u8a8d\u6578\u64da\u985e\u578b\u5167\u90e8\u7684\u69cb\u9020"},"content":{"rendered":"<h1 id=\"oracle%e6%9c%8d%e5%8b%99%e4%b8%ad%e4%be%86%e7%a2%ba%e8%aa%8d%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e5%85%a7%e9%83%a8%e7%9a%84%e6%a7%8b%e9%80%a0-xutXXqhydS\">Oracle\u670d\u52d9\u4e2d\u4f86\u78ba\u8a8d\u6578\u64da\u985e\u578b\u5167\u90e8\u7684\u69cb\u9020<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u985e\u578b\u7684\u9078\u64c7\u5c0d\u65bc\u6578\u64da\u7684\u5b58\u5132\u3001\u67e5\u8a62\u548c\u8655\u7406\u81f3\u95dc\u91cd\u8981\u3002Oracle\u6578\u64da\u5eab\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u985e\u578b\u4ee5\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Oracle\u670d\u52d9\u4e2d\u78ba\u8a8d\u6578\u64da\u985e\u578b\u7684\u5167\u90e8\u69cb\u9020\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"oracle%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e6%a6%82%e8%bf%b0-xutXXqhydS\">Oracle\u6578\u64da\u985e\u578b\u6982\u8ff0<\/h2>\n<p>Oracle\u6578\u64da\u5eab\u652f\u6301\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u4e3b\u8981\u53ef\u4ee5\u5206\u70ba\u4ee5\u4e0b\u5e7e\u985e\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u503c\u985e\u578b\uff1a<\/strong>\u5305\u62ecNUMBER\u3001FLOAT\u3001INTEGER\u7b49\uff0c\u9019\u4e9b\u985e\u578b\u7528\u65bc\u5b58\u5132\u6578\u5b57\u6578\u64da\u3002<\/li>\n<li><strong>\u5b57\u7b26\u985e\u578b\uff1a<\/strong>\u5305\u62ecCHAR\u3001VARCHAR2\u3001NCHAR\u3001NVARCHAR2\u7b49\uff0c\u9019\u4e9b\u985e\u578b\u7528\u65bc\u5b58\u5132\u5b57\u7b26\u6578\u64da\u3002<\/li>\n<li><strong>\u65e5\u671f\u548c\u6642\u9593\u985e\u578b\uff1a<\/strong>\u5305\u62ecDATE\u3001TIMESTAMP\u7b49\uff0c\u9019\u4e9b\u985e\u578b\u7528\u65bc\u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\u4fe1\u606f\u3002<\/li>\n<li><strong>\u4e8c\u9032\u5236\u985e\u578b\uff1a<\/strong>\u5305\u62ecBLOB\u3001BFILE\u7b49\uff0c\u9019\u4e9b\u985e\u578b\u7528\u65bc\u5b58\u5132\u4e8c\u9032\u5236\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%a2%ba%e8%aa%8d%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e5%85%a7%e9%83%a8%e6%a7%8b%e9%80%a0-xutXXqhydS\">\u78ba\u8a8d\u6578\u64da\u985e\u578b\u7684\u5167\u90e8\u69cb\u9020<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u78ba\u8a8d\u6578\u64da\u985e\u578b\u7684\u5167\u90e8\u69cb\u9020\u53ef\u4ee5\u901a\u904e\u67e5\u8a62\u6578\u64da\u5b57\u5178\u8996\u5716\u4f86\u5be6\u73fe\u3002\u6700\u5e38\u7528\u7684\u8996\u5716\u662fUSER_TAB_COLUMNS\u548cALL_TAB_COLUMNS\uff0c\u9019\u4e9b\u8996\u5716\u63d0\u4f9b\u4e86\u6709\u95dc\u8868\u4e2d\u5217\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5305\u62ec\u6578\u64da\u985e\u578b\u3001\u9577\u5ea6\u3001\u7cbe\u5ea6\u7b49\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8user_tab_columns%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-xutXXqhydS\">\u4f7f\u7528USER_TAB_COLUMNS\u67e5\u8a62\u6578\u64da\u985e\u578b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528SQL\u67e5\u8a62\u4f86\u7372\u53d6\u7279\u5b9a\u8868\u7684\u5217\u4fe1\u606f\uff1a<\/p>\n<pre><code>\nSELECT COLUMN_NAME, DATA_TYPE, DATA_LENGTH, DATA_PRECISION, DATA_SCALE\nFROM USER_TAB_COLUMNS\nWHERE TABLE_NAME = 'YOUR_TABLE_NAME';\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u60a8\u9700\u8981\u5c07<code>YOUR_TABLE_NAME<\/code>\u66ff\u63db\u70ba\u60a8\u8981\u67e5\u8a62\u7684\u5be6\u969b\u8868\u540d\u3002\u67e5\u8a62\u7d50\u679c\u5c07\u986f\u793a\u8a72\u8868\u4e2d\u6bcf\u4e00\u5217\u7684\u540d\u7a31\u3001\u6578\u64da\u985e\u578b\u3001\u6578\u64da\u9577\u5ea6\u3001\u7cbe\u5ea6\u548c\u523b\u5ea6\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-xutXXqhydS\">\u793a\u4f8b\uff1a\u6aa2\u67e5\u6578\u64da\u985e\u578b<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>EMPLOYEES<\/code>\u7684\u8868\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6aa2\u67e5\u5176\u5217\u7684\u6578\u64da\u985e\u578b\uff1a<\/p>\n<pre><code>\nSELECT COLUMN_NAME, DATA_TYPE, DATA_LENGTH\nFROM USER_TAB_COLUMNS\nWHERE TABLE_NAME = 'EMPLOYEES';\n<\/code><\/pre>\n<p>\u67e5\u8a62\u7d50\u679c\u53ef\u80fd\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre><code>\nCOLUMN_NAME      DATA_TYPE      DATA_LENGTH\n---------------- --------------- ------------\nEMPLOYEE_ID      NUMBER         22\nFIRST_NAME       VARCHAR2       20\nLAST_NAME        VARCHAR2       25\nHIRE_DATE        DATE           7\n<\/code><\/pre>\n<h2 id=\"%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e9%81%b8%e6%93%87%e8%88%87%e6%87%89%e7%94%a8-xutXXqhydS\">\u6578\u64da\u985e\u578b\u7684\u9078\u64c7\u8207\u61c9\u7528<\/h2>\n<p>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u5c0d\u65bc\u6578\u64da\u5eab\u6027\u80fd\u548c\u5b58\u5132\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002\u4f8b\u5982\uff0c\u4f7f\u7528<code>VARCHAR2<\/code>\u800c\u4e0d\u662f<code>CHAR<\/code>\u53ef\u4ee5\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\uff0c\u56e0\u70ba<code>VARCHAR2<\/code>\u53ea\u4f54\u7528\u5be6\u969b\u5b58\u5132\u7684\u5b57\u7b26\u6578\u91cf\uff0c\u800c<code>CHAR<\/code>\u5247\u59cb\u7d42\u4f54\u7528\u56fa\u5b9a\u7684\u9577\u5ea6\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u5c0d\u65bc\u9700\u8981\u9032\u884c\u6578\u5b78\u8a08\u7b97\u7684\u5217\uff0c\u9078\u64c7<code>NUMBER<\/code>\u985e\u578b\u53ef\u4ee5\u63d0\u4f9b\u66f4\u9ad8\u7684\u7cbe\u5ea6\u548c\u9748\u6d3b\u6027\u3002\u5c0d\u65bc\u65e5\u671f\u548c\u6642\u9593\u7684\u8655\u7406\uff0c\u4f7f\u7528<code>DATE<\/code>\u6216<code>TIMESTAMP<\/code>\u985e\u578b\u53ef\u4ee5\u65b9\u4fbf\u5730\u9032\u884c\u6642\u9593\u6233\u7684\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-xutXXqhydS\">\u7d50\u8ad6<\/h2>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u78ba\u8a8d\u6578\u64da\u985e\u578b\u7684\u5167\u90e8\u69cb\u9020\u662f\u6578\u64da\u5eab\u7ba1\u7406\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u901a\u904e\u67e5\u8a62\u6578\u64da\u5b57\u5178\u8996\u5716\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u7372\u53d6\u8868\u4e2d\u5217\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5f9e\u800c\u505a\u51fa\u66f4\u660e\u667a\u7684\u6578\u64da\u985e\u578b\u9078\u64c7\u3002\u9019\u4e0d\u50c5\u6709\u52a9\u65bc\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc<code>VPS<\/code>\u3001<code>\u9999\u6e2fVPS<\/code>\u548c\u5176\u4ed6\u76f8\u95dc\u670d\u52d9\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Oracle\u670d\u52d9\u4e2d\u6578\u64da\u985e\u578b\u7684\u5167\u90e8\u7d50\u69cb\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u78ba\u4fdd\u6578\u64da\u6e96\u78ba\u6027\u8207\u4e00\u81f4\u6027\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-95130","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95130","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=95130"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95130\/revisions"}],"predecessor-version":[{"id":95131,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95130\/revisions\/95131"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95130"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95130"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}