{"id":5034,"date":"2024-11-14T12:49:48","date_gmt":"2024-11-14T04:49:48","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5034\/"},"modified":"2024-11-14T12:49:48","modified_gmt":"2024-11-14T04:49:48","slug":"oracle%e5%be%aa%e7%8e%af%e8%af%ad%e5%8f%a5%e6%80%8e%e4%b9%88%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5034\/","title":{"rendered":"oracle\u5faa\u73af\u8bed\u53e5\u600e\u4e48\u7528"},"content":{"rendered":"<blockquote><p>\n  oracle \u4e2d\u7684\u5faa\u73af\u8bed\u53e5\u5141\u8bb8\u91cd\u590d\u6267\u884c\u4ee3\u7801\u6bb5\uff0c\u5206\u4e3a for\u3001while \u548c do while\u3002for \u5faa\u73af\u5229\u7528\u5faa\u73af\u53d8\u91cf\u904d\u5386\u7279\u5b9a\u8303\u56f4\uff0cwhile \u5faa\u73af\u5728\u6761\u4ef6\u4e3a\u771f\u65f6\u6267\u884c\uff0cdo while \u5faa\u73af\u5728\u6761\u4ef6\u4e3a\u5047\u65f6\u505c\u6b62\u6267\u884c\u3002\u4f8b\u5982\uff0cfor \u5faa\u73af\u53ef\u4ee5\u9010\u4e2a\u6253\u5370\u6570\u5b57\uff0cwhile \u5faa\u73af\u53ef\u4ee5\u6301\u7eed\u8bfb\u53d6\u7528\u6237\u8f93\u5165\uff0cdo while \u5faa\u73af\u53ef\u4ee5\u4e0d\u65ad\u8be2\u95ee\u7528\u6237\u662f\u5426\u7ee7\u7eed\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/21\/2024052111512251958.jpg\" class=\"aligncenter\" title=\"oracle\u5faa\u73af\u8bed\u53e5\u600e\u4e48\u7528\u63d2\u56fe\" alt=\"oracle\u5faa\u73af\u8bed\u53e5\u600e\u4e48\u7528\u63d2\u56fe\" \/><\/p>\n<p><strong>Oracle \u5faa\u73af\u8bed\u53e5\u7684\u4f7f\u7528<\/strong><\/p>\n<p><strong>\u5faa\u73af\u8bed\u53e5\u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n<p>\u5faa\u73af\u8bed\u53e5\u662f\u4e00\u79cd\u5141\u8bb8\u91cd\u590d\u6267\u884c\u4e00\u7ec4\u8bed\u53e5\u7684\u8bed\u53e5\u3002<\/p>\n<p><strong>Oracle \u4e2d\u7684\u5faa\u73af\u8bed\u53e5\u7c7b\u578b<\/strong><\/p>\n<p>Oracle \u4e2d\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u7c7b\u578b\u7684\u5faa\u73af\u8bed\u53e5\uff1a<\/p>\n<ul>\n<li>FOR \u5faa\u73af<\/li>\n<li>WHILE \u5faa\u73af<\/li>\n<li>DO WHILE \u5faa\u73af<\/li>\n<\/ul>\n<p><strong>FOR \u5faa\u73af<\/strong><\/p>\n<p>\u683c\u5f0f\uff1a<\/p>\n<pre>FOR loop_variable IN start_value .. end_value [BY increment_value] LOOP\n  -- \u5faa\u73af\u4f53\nEND LOOP;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ul>\n<li>loop_variable\uff1a\u5faa\u73af\u53d8\u91cf\uff0c\u7528\u4e8e\u63a7\u5236\u5faa\u73af\u3002<\/li>\n<li>start_value\uff1a\u5faa\u73af\u7684\u8d77\u59cb\u503c\u3002<\/li>\n<li>end_value\uff1a\u5faa\u73af\u7684\u7ed3\u675f\u503c\u3002<\/li>\n<li>increment_value\uff1a\u5faa\u73af\u53d8\u91cf\u5728\u6bcf\u6b21\u8fed\u4ee3\u4e2d\u7684\u589e\u91cf\u503c\uff0c\u9ed8\u8ba4\u4e3a 1\u3002<\/li>\n<\/ul>\n<p><strong>WHILE \u5faa\u73af<\/strong><\/p>\n<p>\u683c\u5f0f\uff1a<\/p>\n<pre>WHILE condition LOOP\n  -- \u5faa\u73af\u4f53\nEND LOOP;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ul>\n<li>condition\uff1a\u5faa\u73af\u6267\u884c\u7684\u6761\u4ef6\u3002\u5f53\u6761\u4ef6\u4e3a\u771f\u65f6\uff0c\u5faa\u73af\u7ee7\u7eed\u6267\u884c\u3002<\/li>\n<\/ul>\n<p><strong>DO WHILE \u5faa\u73af<\/strong><\/p>\n<p>\u683c\u5f0f\uff1a<\/p>\n<pre>DO\n  -- \u5faa\u73af\u4f53\nEND WHILE condition;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ul>\n<li>condition\uff1a\u5faa\u73af\u6267\u884c\u7684\u6761\u4ef6\u3002\u5f53\u6761\u4ef6\u4e3a\u5047\u65f6\uff0c\u5faa\u73af\u7ed3\u675f\u3002<\/li>\n<\/ul>\n<p><strong>\u5faa\u73af\u8bed\u53e5\u793a\u4f8b<\/strong><\/p>\n<p><strong>FOR \u5faa\u73af\uff1a<\/strong><\/p>\n<p>\u6253\u5370 1 \u5230 10 \u7684\u6570\u5b57\uff1a<\/p>\n<pre>FOR i IN 1 .. 10 LOOP\n  DBMS_OUTPUT.PUT_LINE(i);\nEND LOOP;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>WHILE \u5faa\u73af\uff1a<\/strong><\/p>\n<p>\u8bfb\u53d6\u7528\u6237\u8f93\u5165\uff0c\u76f4\u5230\u8f93\u5165\u4e3a\u7a7a\uff1a<\/p>\n<pre>DECLARE\n  str VARCHAR2(20);\nBEGIN\n  WHILE TRUE LOOP\n    DBMS_OUTPUT.PUT_LINE('Enter a string (or press Enter to quit):');\n    str := UPPER(DBMS_INPUT.GET_LINE);\n    EXIT WHEN str = '';\n  END LOOP;\nEND;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>DO WHILE \u5faa\u73af\uff1a<\/strong><\/p>\n<p>\u91cd\u590d\u8be2\u95ee\u7528\u6237\u662f\u5426\u7ee7\u7eed\uff0c\u76f4\u5230\u8f93\u5165\u201cN\u201d\uff1a<\/p>\n<pre>DECLARE\n  ch VARCHAR2(1);\nBEGIN\n  DO\n    DBMS_OUTPUT.PUT_LINE('Do you want to continue (Y\/N)?');\n    ch := UPPER(DBMS_INPUT.GET_LINE(1));\n  END WHILE ch &lt;&gt; 'N';\nEND;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5faa\u73af\u8bed\u53e5\u600e\u4e48\u7528\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>oracle \u4e2d\u7684\u5faa\u73af\u8bed\u53e5\u5141\u8bb8\u91cd\u590d\u6267\u884c\u4ee3\u7801\u6bb5\uff0c\u5206\u4e3a for\u3001while \u548c do while\u3002for \u5faa\u73af\u5229\u7528\u5faa\u73af\u53d8\u91cf\u904d\u5386\u7279\u5b9a\u8303\u56f4\uff0cwhile \u5faa\u73af\u5728\u6761\u4ef6\u4e3a\u771f\u65f6\u6267\u884c\uff0cdo while \u5faa\u73af\u5728\u6761\u4ef6\u4e3a\u5047\u65f6\u505c\u6b62\u6267\u884c\u3002\u4f8b\u5982\uff0cfor \u5faa\u73af\u53ef\u4ee5\u9010\u4e2a\u6253\u5370\u6570\u5b57\uff0cwhile \u5faa\u73af\u53ef\u4ee5\u6301\u7eed\u8bfb\u53d6\u7528\u6237\u8f93\u5165\uff0cdo while \u5faa\u73af\u53ef\u4ee5\u4e0d\u65ad\u8be2\u95ee\u7528\u6237\u662f\u5426\u7ee7\u7eed\u3002 Oracle \u5faa\u73af\u8bed\u53e5\u7684\u4f7f\u7528 \u5faa\u73af\u8bed\u53e5\u662f\u4ec0\u4e48\uff1f \u5faa\u73af\u8bed\u53e5\u662f\u4e00\u79cd\u5141\u8bb8\u91cd\u590d\u6267\u884c\u4e00\u7ec4\u8bed\u53e5\u7684\u8bed\u53e5\u3002 Oracle \u4e2d\u7684\u5faa\u73af\u8bed\u53e5\u7c7b\u578b Oracle \u4e2d\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u7c7b\u578b\u7684\u5faa\u73af\u8bed\u53e5\uff1a FOR \u5faa\u73af WHILE \u5faa\u73af DO WHILE \u5faa\u73af FOR \u5faa\u73af \u683c\u5f0f\uff1a FOR loop_variable IN start_value .. end_value [BY increment_value] LOOP &#8212; \u5faa\u73af\u4f53 END LOOP; \u767b\u5f55\u540e\u590d\u5236 loop_variable\uff1a\u5faa\u73af\u53d8\u91cf\uff0c\u7528\u4e8e\u63a7\u5236\u5faa\u73af\u3002 start_value\uff1a\u5faa\u73af\u7684\u8d77\u59cb\u503c\u3002 end_value\uff1a\u5faa\u73af\u7684\u7ed3\u675f\u503c\u3002 increment_value\uff1a\u5faa\u73af\u53d8\u91cf\u5728\u6bcf\u6b21\u8fed\u4ee3\u4e2d\u7684\u589e\u91cf\u503c\uff0c\u9ed8\u8ba4\u4e3a 1\u3002 WHILE \u5faa\u73af \u683c\u5f0f\uff1a WHILE [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5034","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5034","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5034"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5034\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5034"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5034"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5034"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}