{"id":55826,"date":"2023-09-27T23:16:18","date_gmt":"2023-09-27T15:16:18","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=55826"},"modified":"2023-09-27T23:16:19","modified_gmt":"2023-09-27T15:16:19","slug":"oracle%e6%80%8e%e4%b9%88%e6%9f%a5%e8%af%a2%e6%95%b0%e6%8d%ae%e6%95%b0%e9%87%8f","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/55826.html","title":{"rendered":"oracle\u600e\u4e48\u67e5\u8be2\u6570\u636e\u6570\u91cf"},"content":{"rendered":"\n
\n

oracle\u67e5\u8be2\u6570\u636e\u6570\u91cf\u7684\u6b65\u9aa4\uff1a1.oracle\u600e\u4e48\u67e5\u8be2\u6570\u636e\u6570\u91cf\uff1b2.\u9009\u62e9\u8981\u67e5\u8be2\u7684\u8868\uff1b3.\u7f16\u5199SQL\u67e5\u8be2\uff1b4.\u6267\u884cSQL\u67e5\u8be2\uff1b5.\u67e5\u770b\u7ed3\u679c\uff1b6.\u9000\u51fa\u6570\u636e\u5e93\u4f1a\u8bdd\u3002\u5728\u67e5\u8be2\u6570\u636e\u6570\u91cf\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u767b\u5f55\u5230\u60a8\u7684Oracle\u6570\u636e\u5e93\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u547d\u4ee4\u884c\u5de5\u5177\u5982SQL*Plus\u6216SQL Developer\u7b49\u767b\u5f55\uff0c\u6216\u8005\u901a\u8fc7\u7f16\u7a0b\u8bed\u8a00\u4e2d\u7684\u6570\u636e\u5e93\u8fde\u63a5\u8fdb\u884c\u767b\u5f55\u3002<\/p>\n<\/blockquote>\n\n\n

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\"\"<\/figure><\/div>\n\n\n

1.oracle\u600e\u4e48\u67e5\u8be2\u6570\u636e\u6570\u91cf<\/h2>\n\n\n\n

\u5728\u67e5\u8be2\u6570\u636e\u6570\u91cf\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u767b\u5f55\u5230\u60a8\u7684Oracle\u6570\u636e\u5e93\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u547d\u4ee4\u884c\u5de5\u5177\u5982SQL*Plus\u6216SQL Developer\u7b49\u767b\u5f55\uff0c\u6216\u8005\u901a\u8fc7\u7f16\u7a0b\u8bed\u8a00\u4e2d\u7684\u6570\u636e\u5e93\u8fde\u63a5\u8fdb\u884c\u767b\u5f55\u3002<\/p>\n\n\n\n

2.\u9009\u62e9\u8981\u67e5\u8be2\u7684\u8868<\/h2>\n\n\n\n

\u786e\u4fdd\u60a8\u5df2\u9009\u62e9\u8981\u67e5\u8be2\u7684\u6570\u636e\u5e93\u8868\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8bed\u53e5\u9009\u62e9\u8868\uff1a<\/p>\n\n\n\n

USE your_database_name;<\/code><\/pre>\n\n\n\n
\u5176\u4e2d\uff0cyour_database_name \u662f\u60a8\u8981\u67e5\u8be2\u7684\u6570\u636e\u5e93\u540d\u79f0\u3002<\/p>\n\n\n\n
3.\u7f16\u5199SQL\u67e5\u8be2<\/h2>\n\n\n\n
\u4f7f\u7528SQL\u67e5\u8be2\u6765\u83b7\u53d6\u6570\u636e\u6570\u91cf\u3002\u60a8\u53ef\u4ee5\u9009\u62e9\u4e0d\u540c\u7684SQL\u67e5\u8be2\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u60a8\u7684\u9700\u6c42\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u793a\u4f8b\uff1a<\/p>\n\n\n\n
\u67e5\u8be2\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\u884c\u6570\u91cf\uff1a<\/p>\n\n\n\n
SELECT COUNT(*) FROM your_table_name;<\/code><\/pre>\n\n\n\n
\u6839\u636e\u7279\u5b9a\u6761\u4ef6\u67e5\u8be2\u6570\u636e\u884c\u7684\u6570\u91cf\uff1a<\/p>\n\n\n\n
SELECT COUNT(*) FROM your_table_name WHERE your_condition;<\/code><\/pre>\n\n\n\n
\u5728 your_condition \u7684\u4f4d\u7f6e\uff0c\u60a8\u5e94\u8be5\u63d0\u4f9b\u60a8\u60f3\u8981\u7684\u6761\u4ef6\u3002<\/p>\n\n\n\n
\u67e5\u8be2\u591a\u4e2a\u8868\u7684\u6570\u636e\u884c\u6570\u91cf\u5e76\u5c06\u7ed3\u679c\u7ec4\u5408\u5728\u4e00\u8d77\uff1a<\/p>\n\n\n\n
SELECT (\r\n    SELECT COUNT(*) FROM table1\r\n) + (\r\n    SELECT COUNT(*) FROM table2\r\n) AS total_count;\r<\/code><\/pre>\n\n\n\n
\u4f7f\u7528Oracle\u5185\u7f6e\u51fd\u6570 COUNT \u67e5\u8be2\u6570\u636e\u884c\u6570\u91cf\uff1a<\/p>\n\n\n\n
SELECT COUNT(*) FROM your_table_name;<\/code><\/pre>\n\n\n\n
4.\u6267\u884cSQL\u67e5\u8be2<\/h2>\n\n\n\n
\u901a\u8fc7\u60a8\u9009\u62e9\u7684\u65b9\u5f0f\u6267\u884cSQL\u67e5\u8be2\u3002\u5728SQL*Plus\u4e2d\uff0c\u60a8\u53ef\u4ee5\u8f93\u5165SQL\u67e5\u8be2\u5e76\u6309Enter\u952e\u6267\u884c\u3002\u5982\u679c\u60a8\u5728\u7f16\u7a0b\u8bed\u8a00\u4e2d\u6267\u884c\u67e5\u8be2\uff0c\u786e\u4fdd\u4f7f\u7528\u9002\u5f53\u7684\u6570\u636e\u5e93\u8fde\u63a5\u548c\u6267\u884c\u65b9\u6cd5\u3002<\/p>\n\n\n\n
5.\u67e5\u770b\u7ed3\u679c<\/h2>\n\n\n\n
\u67e5\u8be2\u7684\u7ed3\u679c\u5c06\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\u6216\u901a\u8fc7\u7f16\u7a0b\u8bed\u8a00\u7684\u67e5\u8be2\u7ed3\u679c\u5bf9\u8c61\u8fd4\u56de\u3002\u60a8\u53ef\u4ee5\u67e5\u770b\u7ed3\u679c\uff0c\u4ee5\u83b7\u53d6\u67e5\u8be2\u7684\u6570\u636e\u884c\u6570\u91cf\u3002<\/p>\n\n\n\n
6.\u9000\u51fa\u6570\u636e\u5e93\u4f1a\u8bdd<\/h2>\n\n\n\n
\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662f\u547d\u4ee4\u884c\u5de5\u5177\uff0c\u6700\u540e\u4e0d\u8981\u5fd8\u8bb0\u9000\u51fa\u6570\u636e\u5e93\u4f1a\u8bdd\uff0c\u4ee5\u786e\u4fdd\u5b89\u5168\u6027\u3002<\/p>\n\n\n\n
\u5e38\u89c1\u95ee\u7b54\uff1a<\/strong><\/p>\n\n\n\n
    \n
  • \u95ee\uff1a\u5982\u4f55\u5728\u7f16\u7a0b\u8bed\u8a00\u4e2d\u67e5\u8be2 Oracle \u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u884c\u6570\u91cf\uff1f<\/li>\n\n\n\n
  • \u7b54\uff1a\u5728\u7f16\u7a0b\u8bed\u8a00\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u6570\u636e\u5e93\u8fde\u63a5\u6765\u6267\u884c SQL \u67e5\u8be2\uff0c\u7136\u540e\u83b7\u53d6\u7ed3\u679c\u3002\u5177\u4f53\u7684\u4ee3\u7801\u53d6\u51b3\u4e8e\u60a8\u6240\u4f7f\u7528\u7684\u7f16\u7a0b\u8bed\u8a00\u548c\u6570\u636e\u5e93\u8fde\u63a5\u5e93\u3002\u901a\u5e38\uff0c\u60a8\u4f1a\u6267\u884c SQL \u67e5\u8be2\uff0c\u5c06\u7ed3\u679c\u5b58\u50a8\u5728\u53d8\u91cf\u4e2d\uff0c\u5e76\u5728\u4ee3\u7801\u4e2d\u4f7f\u7528\u8be5\u53d8\u91cf\u3002<\/li>\n<\/ul>\n\n\n\n
      \n
    • \u95ee\uff1a\u5982\u4f55\u8ba1\u7b97\u8868\u4e2d\u6570\u636e\u7684\u603b\u884c\u6570\uff1f<\/li>\n\n\n\n
    • \u7b54\uff1a\u60a8\u53ef\u4ee5\u4f7f\u7528 SQL \u67e5\u8be2\u6765\u8ba1\u7b97\u8868\u4e2d\u6570\u636e\u7684\u603b\u884c\u6570\uff0c\u4f8b\u5982\uff1aSELECT COUNT(*) FROM your_table;\uff0c\u5176\u4e2d your_table \u662f\u60a8\u8981\u67e5\u8be2\u7684\u8868\u7684\u540d\u79f0\u3002<\/li>\n<\/ul>\n\n\n\n
        \n
      • \u95ee\uff1a\u662f\u5426\u53ef\u4ee5\u6309\u6761\u4ef6\u8ba1\u7b97\u6570\u636e\u884c\u7684\u6570\u91cf\uff1f<\/li>\n\n\n\n
      • \u7b54\uff1a\u662f\u7684\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5e26\u6709\u6761\u4ef6\u7684 SQL \u67e5\u8be2\u6765\u8ba1\u7b97\u7b26\u5408\u7279\u5b9a\u6761\u4ef6\u7684\u6570\u636e\u884c\u6570\u91cf\uff0c\u4f8b\u5982\uff1aSELECT COUNT(*) FROM your_table WHERE your_condition;\uff0c\u5176\u4e2d your_condition \u662f\u60a8\u7684\u7b5b\u9009\u6761\u4ef6\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"oracle\u67e5\u8be2\u6570\u636e\u6570\u91cf\u7684\u6b65\u9aa4\uff1a1.oracle\u600e\u4e48\u67e5\u8be2\u6570\u636e\u6570\u91cf\uff1b2.\u9009\u62e9\u8981\u67e5\u8be2\u7684\u8868\uff1b3.\u7f16\u5199SQL\u67e5\u8be2\uff1b4. […]","protected":false},"author":4,"featured_media":55833,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[2594,529,366],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/55826"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=55826"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/55826\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/55833"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=55826"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=55826"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=55826"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}