{"id":15732,"date":"2023-12-04T22:08:37","date_gmt":"2023-12-04T14:08:37","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=15732"},"modified":"2023-12-04T22:09:15","modified_gmt":"2023-12-04T14:09:15","slug":"oracle-zhong-ni-jiang-tong-guo-you-biao-shu-xing-s-2","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/oracle-zhong-ni-jiang-tong-guo-you-biao-shu-xing-s-2\/","title":{"rendered":"Oracle \u4e2d\u4f60\u5c06\u901a\u8fc7\u6e38\u6807\u5c5e\u6027 SQL%FOUND \u5f97\u5230\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p>\u5728 Oracle \u4e2d\uff0c\u901a\u8fc7\u6e38\u6807\u5c5e\u6027 <code>SQL%FOUND<\/code>\uff0c\u4f60\u53ef\u4ee5\u5f97\u77e5\u6700\u8fd1\u4e00\u6b21\u6267\u884c\u7684 SQL \u8bed\u53e5\u662f\u5426\u627e\u5230\u4e86\u5339\u914d\u7684\u6570\u636e\u884c\u3002\u5177\u4f53\u6765\u8bf4\uff1a<\/p>\n<ul>\n<li>\n\u5982\u679c <code>SQL%FOUND<\/code> \u7684\u503c\u4e3a <code>TRUE<\/code>\uff0c\u8868\u793a\u6700\u8fd1\u4e00\u6b21 SQL \u67e5\u8be2\u6210\u529f\u627e\u5230\u4e86\u5339\u914d\u7684\u6570\u636e\u884c\u3002\n<\/li>\n<li>\n\u5982\u679c <code>SQL%FOUND<\/code> \u7684\u503c\u4e3a <code>FALSE<\/code>\uff0c\u8868\u793a\u6700\u8fd1\u4e00\u6b21 SQL \u67e5\u8be2\u6ca1\u6709\u627e\u5230\u5339\u914d\u7684\u6570\u636e\u884c\u3002\n<\/li>\n<\/ul>\n<p>\u8fd9\u4e2a\u5c5e\u6027\u901a\u5e38\u4e0e\u6e38\u6807\u4e00\u8d77\u4f7f\u7528\uff0c\u7528\u4e8e\u5728 PL\/SQL \u7a0b\u5e8f\u4e2d\u5224\u65ad\u67e5\u8be2\u7ed3\u679c\u662f\u5426\u4e3a\u7a7a\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code class=\"language-sql\">DECLARE\n  cursor_name CURSOR IS\n    SELECT * FROM your_table WHERE your_condition;\nBEGIN\n  OPEN cursor_name;\n  FETCH cursor_name INTO some_variable;\n  \n  IF cursor_name%FOUND THEN\n    -- \u5904\u7406\u627e\u5230\u6570\u636e\u7684\u60c5\u51b5\n    DBMS_OUTPUT.PUT_LINE('Data found.');\n  ELSE\n    -- \u5904\u7406\u672a\u627e\u5230\u6570\u636e\u7684\u60c5\u51b5\n    DBMS_OUTPUT.PUT_LINE('No data found.');\n  END IF;\n  \n  CLOSE cursor_name;\nEND;\n<\/code><\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c<code>cursor_name%FOUND<\/code> \u7528\u4e8e\u68c0\u67e5\u6e38\u6807\u67e5\u8be2\u662f\u5426\u627e\u5230\u4e86\u5339\u914d\u7684\u6570\u636e\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Oracle \u4e2d\uff0c\u901a\u8fc7\u6e38\u6807\u5c5e\u6027 SQL%FOUND\uff0c\u4f60\u53ef\u4ee5\u5f97\u77e5\u6700\u8fd1\u4e00\u6b21\u6267\u884c\u7684 SQL \u8bed\u53e5\u662f\u5426\u627e\u5230\u4e86\u5339\u914d\u7684 [&hellip;]<\/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-15732","post","type-post","status-publish","format-standard","hentry","category-oracel"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15732","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=15732"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15732\/revisions"}],"predecessor-version":[{"id":15733,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15732\/revisions\/15733"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=15732"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=15732"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=15732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}