{"id":15641,"date":"2023-12-04T21:28:16","date_gmt":"2023-12-04T13:28:16","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=15641"},"modified":"2023-12-04T21:29:14","modified_gmt":"2023-12-04T13:29:14","slug":"oracle-zhong-gei-chu-liang-ge-jian-cha-biao-jie-go","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/oracle-zhong-gei-chu-liang-ge-jian-cha-biao-jie-go\/","title":{"rendered":"Oracle \u4e2d\u7ed9\u51fa\u4e24\u4e2a\u68c0\u67e5\u8868\u7ed3\u6784\u7684\u65b9\u6cd5\uff1f"},"content":{"rendered":"

\u5728Oracle\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\u6765\u68c0\u67e5\u8868\u7684\u7ed3\u6784\uff1a<\/p>\n

    \n
  1. \nDESCRIBE\u547d\u4ee4\uff1a<\/strong><\/p>\n
      \n
    • DESCRIBE<\/code>\u662f\u7528\u4e8e\u67e5\u770b\u8868\u7ed3\u6784\u7684\u7b80\u5355\u547d\u4ee4\u3002\u5728SQL*Plus\u6216SQL Developer\u7b49\u5de5\u5177\u4e2d\uff0c\u53ef\u4ee5\u8f93\u5165\u8868\u540d\u5e76\u6267\u884cDESCRIBE<\/code>\u547d\u4ee4\uff0c\u5b83\u4f1a\u663e\u793a\u8868\u7684\u5217\u540d\u3001\u6570\u636e\u7c7b\u578b\u548c\u7ea6\u675f\u4fe1\u606f\u3002<\/li>\n
    • \u793a\u4f8b\uff1aDESCRIBE table_name;<\/code><\/li>\n<\/ul>\n<\/li>\n
    • \n\u6570\u636e\u5b57\u5178\u89c6\u56fe\uff1a<\/strong><\/p>\n
        \n
      • Oracle\u63d0\u4f9b\u4e86\u591a\u4e2a\u89c6\u56fe\u7528\u4e8e\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u5143\u6570\u636e\u4fe1\u606f\uff0c\u53ef\u4ee5\u67e5\u8be2\u8fd9\u4e9b\u89c6\u56fe\u6765\u83b7\u53d6\u8868\u7ed3\u6784\u4fe1\u606f\u3002\u5e38\u7528\u7684\u89c6\u56fe\u5305\u62ecALL_TAB_COLUMNS<\/code>\u548cUSER_TAB_COLUMNS<\/code>\u3002<\/li>\n
      • \u793a\u4f8b\uff1a\n
        SELECT column_name, data_type, data_length\nFROM all_tab_columns\nWHERE table_name = 'your_table_name';\n<\/code><\/pre>\n<\/li>\n
      • ALL_TAB_COLUMNS<\/code>\u5305\u542b\u6240\u6709\u7528\u6237\u6709\u6743\u9650\u8bbf\u95ee\u7684\u8868\u7684\u5217\u4fe1\u606f\uff0c\u800cUSER_TAB_COLUMNS<\/code>\u53ea\u5305\u542b\u5f53\u524d\u7528\u6237\u62e5\u6709\u7684\u8868\u7684\u5217\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
        \u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u63d0\u4f9b\u6709\u5173\u8868\u7ed3\u6784\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u5305\u62ec\u5217\u540d\u3001\u6570\u636e\u7c7b\u578b\u3001\u957f\u5ea6\u4ee5\u53ca\u53ef\u80fd\u7684\u7ea6\u675f\u7b49\u3002\u4f7f\u7528\u8fd9\u4e9b\u65b9\u5f0f\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u67e5\u770b\u8868\u7684\u7ed3\u6784\uff0c\u5e2e\u52a9\u4e86\u89e3\u8868\u7684\u8bbe\u8ba1\u548c\u7ec4\u7ec7\u60c5\u51b5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
        \u5728Oracle\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\u6765\u68c0\u67e5\u8868\u7684\u7ed3\u6784\uff1a DESCRIBE\u547d\u4ee4\uff1a DESCRIBE\u662f\u7528\u4e8e\u67e5\u770b\u8868\u7ed3 […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120],"tags":[],"class_list":["post-15641","post","type-post","status-publish","format-standard","hentry","category-oracel"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15641","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=15641"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15641\/revisions"}],"predecessor-version":[{"id":15642,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15641\/revisions\/15642"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=15641"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=15641"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=15641"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}