{"id":199927,"date":"2025-05-06T08:49:13","date_gmt":"2025-05-06T00:49:13","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199927\/"},"modified":"2025-05-06T08:49:13","modified_gmt":"2025-05-06T00:49:13","slug":"blob%e5%92%8cclob%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e5%9c%a8oracle%e4%b8%ad%e7%9a%84%e5%8c%ba%e5%88%ab%e5%92%8c%e7%94%a8%e6%b3%95%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199927\/","title":{"rendered":"Blob\u548cClob\u6570\u636e\u7c7b\u578b\u5728Oracle\u4e2d\u7684\u533a\u522b\u548c\u7528\u6cd5\u8be6\u89e3"},"content":{"rendered":"

<\/b> <\/p>\n

Blob\u548cClob\u6570\u636e\u7c7b\u578b\u5728Oracle\u4e2d\u7684\u533a\u522b\u548c\u7528\u6cd5\u8be6\u89e3<\/h1>\n

\u672c\u7bc7\u6587\u7ae0\u7ed9\u5927\u5bb6\u5206\u4eab\u300aBlob\u548cClob\u6570\u636e\u7c7b\u578b\u5728Oracle\u4e2d\u7684\u533a\u522b\u548c\u7528\u6cd5\u8be6\u89e3\u300b\uff0c\u8986\u76d6\u4e86\u6570\u636e\u5e93\u7684\u5e38\u89c1\u57fa\u7840\u77e5\u8bc6\uff0c\u5176\u5b9e\u4e00\u4e2a\u8bed\u8a00\u7684\u5168\u90e8\u77e5\u8bc6\u70b9\u4e00\u7bc7\u6587\u7ae0\u662f\u4e0d\u53ef\u80fd\u8bf4\u5b8c\u7684\uff0c\u4f46\u5e0c\u671b\u901a\u8fc7\u8fd9\u4e9b\u95ee\u9898\uff0c\u8ba9\u8bfb\u8005\u5bf9\u81ea\u5df1\u7684\u638c\u63e1\u7a0b\u5ea6\u6709\u4e00\u5b9a\u7684\u8ba4\u8bc6(B \u6570)\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u66f4\u597d\u7684\u638c\u63e1\u5b83\u3002<\/p>\n

Oracle\u6570\u636e\u5e93\u4e2d\u7684Blob\u548cClob\u6570\u636e\u7c7b\u578b\u5728\u5b58\u50a8\u5927\u578b\u6570\u636e\u5bf9\u8c61\u65f6\u8d77\u7740\u91cd\u8981\u4f5c\u7528\u3002Blob\u7528\u4e8e\u5b58\u50a8\u4e8c\u8fdb\u5236\u6570\u636e\uff0c\u4f8b\u5982\u56fe\u7247\u3001\u97f3\u9891\u6216\u89c6\u9891\u6587\u4ef6\uff0c\u800cClob\u7528\u4e8e\u6587\u672c\u6570\u636e\uff0c\u4f8b\u5982\u957f\u6587\u672c\u3001HTML\u9875\u9762\u7b49\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecdBlob\u548cClob\u6570\u636e\u7c7b\u578b\u7684\u533a\u522b\u53ca\u4f7f\u7528\u65b9\u6cd5\uff0c\u540c\u65f6\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

    \n
  1. Blob\u6570\u636e\u7c7b\u578b\uff1a<\/li>\n<\/ol>\n

    Blob\u6570\u636e\u7c7b\u578b\u7528\u4e8e\u5b58\u50a8\u4e8c\u8fdb\u5236\u5927\u578b\u5bf9\u8c61\u3002\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0cBlob\u7c7b\u578b\u6700\u5927\u652f\u6301\u5b58\u50a84GB\u7684\u4e8c\u8fdb\u5236\u6570\u636e\u3002Blob\u7c7b\u578b\u901a\u5e38\u7528\u4e8e\u5b58\u50a8\u56fe\u7247\u3001\u97f3\u9891\u3001\u89c6\u9891\u7b49\u4e8c\u8fdb\u5236\u6570\u636e\u3002\u4ee5\u4e0b\u662fBlob\u6570\u636e\u7c7b\u578b\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n

    -- \u521b\u5efa\u5305\u542bBlob\u7c7b\u578b\u5b57\u6bb5\u7684\u8868\nCREATE TABLE Blob_Table (\n    id NUMBER PRIMARY KEY,\n    image_data BLOB\n);\n\n-- \u63d2\u5165Blob\u6570\u636e\nINSERT INTO Blob_Table (id, image_data) VALUES (1, EMPTY_BLOB());\n\n-- \u66f4\u65b0Blob\u6570\u636e\nUPDATE Blob_Table SET image_data = (SELECT * FROM BFILE('IMG_DIR', 'example.jpg')) WHERE id = 1;\n\n-- \u67e5\u8be2Blob\u6570\u636e\nSELECT image_data FROM Blob_Table WHERE id = 1;<\/pre>\n
      \n
    1. Clob\u6570\u636e\u7c7b\u578b\uff1a<\/li>\n<\/ol>\n
      Clob\u6570\u636e\u7c7b\u578b\u7528\u4e8e\u5b58\u50a8\u5b57\u7b26\u5927\u578b\u5bf9\u8c61\u3002Clob\u7c7b\u578b\u6700\u5927\u652f\u6301\u5b58\u50a84GB\u7684\u6587\u672c\u6570\u636e\u3002Clob\u7c7b\u578b\u901a\u5e38\u7528\u4e8e\u5b58\u50a8\u957f\u6587\u672c\u3001HTML\u9875\u9762\u7b49\u5b57\u7b26\u6570\u636e\u3002\u4ee5\u4e0b\u662fClob\u6570\u636e\u7c7b\u578b\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
      -- \u521b\u5efa\u5305\u542bClob\u7c7b\u578b\u5b57\u6bb5\u7684\u8868\nCREATE TABLE Clob_Table (\n    id NUMBER PRIMARY KEY,\n    text_data CLOB\n);\n\n-- \u63d2\u5165Clob\u6570\u636e\nINSERT INTO Clob_Table (id, text_data) VALUES (1, TO_CLOB('This is a sample text data'));\n\n-- \u66f4\u65b0Clob\u6570\u636e\nUPDATE Clob_Table SET text_data = TO_CLOB('Updated text data') WHERE id = 1;\n\n-- \u67e5\u8be2Clob\u6570\u636e\nSELECT text_data FROM Clob_Table WHERE id = 1;<\/pre>\n
      \u901a\u8fc7\u4ee5\u4e0a\u793a\u4f8b\u4ee3\u7801\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5982\u4f55\u5728Oracle\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u8868\u5e76\u4f7f\u7528Blob\u548cClob\u6570\u636e\u7c7b\u578b\u5b58\u50a8\u4e0d\u540c\u7c7b\u578b\u7684\u5927\u578b\u5bf9\u8c61\u6570\u636e\u3002Blob\u7528\u4e8e\u5b58\u50a8\u4e8c\u8fdb\u5236\u6570\u636e\uff0c\u800cClob\u7528\u4e8e\u5b58\u50a8\u5b57\u7b26\u6570\u636e\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6839\u636e\u6570\u636e\u7c7b\u578b\u7684\u7279\u70b9\u9009\u62e9\u5408\u9002\u7684\u5b58\u50a8\u65b9\u5f0f\uff0c\u80fd\u591f\u66f4\u597d\u5730\u6ee1\u8db3\u4e1a\u52a1\u9700\u6c42\u3002<\/p>\n
      \u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6570\u636e\u5e93\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n
      \n
      \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
      Blob\u548cClob\u6570\u636e\u7c7b\u578b\u5728Or...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-199927","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199927","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=199927"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199927\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}