{"id":5317,"date":"2024-11-14T08:15:56","date_gmt":"2024-11-14T00:15:56","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5317\/"},"modified":"2024-11-14T08:15:56","modified_gmt":"2024-11-14T00:15:56","slug":"oracle-for%e5%be%aa%e7%8e%af%e6%80%8e%e4%b9%88%e5%86%99","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5317\/","title":{"rendered":"oracle\u00a0for\u5faa\u73af\u600e\u4e48\u5199"},"content":{"rendered":"

\n oracle \u4e2d\u7684 for \u5faa\u73af\u7528\u4e8e\u91cd\u590d\u6267\u884c\u8bed\u53e5\uff0c\u76f4\u81f3\u6ee1\u8db3\u6761\u4ef6\u3002\u5176\u8bed\u6cd5\u4e3a\uff1afor loop_variable in loop_range loop — \u5faa\u73af\u4f53 end loop;\u3002\u5176\u4e2d\uff1aloop_variable \u662f\u5faa\u73af\u53d8\u91cf\uff0cloop_range \u662f\u5faa\u73af\u53d8\u91cf\u7684\u53d6\u503c\u8303\u56f4\uff0c\u7528\u6cd5\u5305\u62ec\u904d\u5386\u6570\u503c\u3001\u5b57\u7b26\u3001\u65e5\u671f\u8303\u56f4\u4ee5\u53ca\u6e38\u6807\u7ed3\u679c\u96c6\u3002\n<\/p><\/blockquote>\n

\"oracle\u00a0for\u5faa\u73af\u600e\u4e48\u5199\u63d2\u56fe\"<\/p>\n

Oracle \u4e2d for \u5faa\u73af<\/strong><\/p>\n

Oracle \u4e2d\u7684 for \u5faa\u73af\u7528\u4e8e\u91cd\u590d\u6267\u884c\u4e00\u7cfb\u5217\u8bed\u53e5\uff0c\u76f4\u81f3\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u4e3a\u6b62\u3002\u5176\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

FOR loop_variable IN loop_range LOOP\n   -- \u5faa\u73af\u4f53\nEND LOOP;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  •  loop_variable\uff1a<\/strong>\u5faa\u73af\u53d8\u91cf\uff0c\u4fdd\u5b58\u6bcf\u6b21\u8fed\u4ee3\u7684\u5f53\u524d\u503c\u3002<\/li>\n
  •  loop_range\uff1a<\/strong>\u5faa\u73af\u53d8\u91cf\u7684\u53d6\u503c\u8303\u56f4\uff0c\u53ef\u4ee5\u662f\u6570\u503c\u3001\u5b57\u7b26\u6216\u65e5\u671f\u8303\u56f4\u3002<\/li>\n<\/ul>\n
    \u7528\u6cd5\uff1a<\/strong><\/p>\n
    for \u5faa\u73af\u5728 Oracle \u4e2d\u6709\u4ee5\u4e0b\u51e0\u79cd\u7528\u6cd5\uff1a<\/p>\n
    1. \u904d\u5386\u6570\u503c\u8303\u56f4<\/strong><\/p>\n
    FOR i IN 1..10 LOOP\n   -- \u5faa\u73af\u4f53\nEND LOOP;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    2. \u904d\u5386\u5b57\u7b26\u8303\u56f4<\/strong><\/p>\n
    FOR c IN 'A'..'Z' LOOP\n   -- \u5faa\u73af\u4f53\nEND LOOP;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    3. \u904d\u5386\u65e5\u671f\u8303\u56f4<\/strong><\/p>\n
    FOR d IN DATE '2023-01-01'..DATE '2023-12-31' LOOP\n   -- \u5faa\u73af\u4f53\nEND LOOP;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    4. \u904d\u5386\u6e38\u6807\u7ed3\u679c\u96c6<\/strong><\/p>\n
    FOR r IN (SELECT * FROM table_name) LOOP\n   -- \u5faa\u73af\u4f53\nEND LOOP;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u793a\u4f8b\uff1a<\/strong><\/p>\n
    DECLARE\n   i NUMBER;\nBEGIN\n   FOR i IN 1..10 LOOP\n      DBMS_OUTPUT.PUT_LINE('Iteration ' || i);\n   END LOOP;\nEND;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u8f93\u51fa\uff1a<\/strong><\/p>\n
    Iteration 1\nIteration 2\nIteration 3\n...\nIteration 10<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u4ee5\u4e0a\u5c31\u662f for\u5faa\u73af\u600e\u4e48\u5199\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":"
    oracle \u4e2d\u7684 for \u5faa\u73af\u7528\u4e8e\u91cd\u590d\u6267\u884c\u8bed\u53e5\uff0c\u76f4\u81f3\u6ee1\u8db3\u6761\u4ef6\u3002\u5176\u8bed\u6cd5\u4e3a\uff1afor loop_variable in loop_range loop — \u5faa\u73af\u4f53 end loop;\u3002\u5176\u4e2d\uff1aloop_variable \u662f\u5faa\u73af\u53d8\u91cf\uff0cloop_range \u662f\u5faa\u73af\u53d8\u91cf\u7684\u53d6\u503c\u8303\u56f4\uff0c\u7528\u6cd5\u5305\u62ec\u904d\u5386\u6570\u503c\u3001\u5b57\u7b26\u3001\u65e5\u671f\u8303\u56f4\u4ee5\u53ca\u6e38\u6807\u7ed3\u679c\u96c6\u3002 Oracle \u4e2d for \u5faa\u73af Oracle \u4e2d\u7684 for \u5faa\u73af\u7528\u4e8e\u91cd\u590d\u6267\u884c\u4e00\u7cfb\u5217\u8bed\u53e5\uff0c\u76f4\u81f3\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u4e3a\u6b62\u3002\u5176\u8bed\u6cd5\u5982\u4e0b\uff1a FOR loop_variable IN loop_range LOOP — \u5faa\u73af\u4f53 END LOOP; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a loop_variable\uff1a\u5faa\u73af\u53d8\u91cf\uff0c\u4fdd\u5b58\u6bcf\u6b21\u8fed\u4ee3\u7684\u5f53\u524d\u503c\u3002 loop_range\uff1a\u5faa\u73af\u53d8\u91cf\u7684\u53d6\u503c\u8303\u56f4\uff0c\u53ef\u4ee5\u662f\u6570\u503c\u3001\u5b57\u7b26\u6216\u65e5\u671f\u8303\u56f4\u3002 \u7528\u6cd5\uff1a for \u5faa\u73af\u5728 Oracle \u4e2d\u6709\u4ee5\u4e0b\u51e0\u79cd\u7528\u6cd5\uff1a 1. \u904d\u5386\u6570\u503c\u8303\u56f4 FOR i IN 1..10 LOOP — \u5faa\u73af\u4f53 END LOOP; \u767b\u5f55\u540e\u590d\u5236 2. \u904d\u5386\u5b57\u7b26\u8303\u56f4 FOR […]<\/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-5317","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5317","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=5317"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5317\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5317"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}