{"id":194547,"date":"2024-11-13T07:34:22","date_gmt":"2024-11-12T23:34:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194547\/"},"modified":"2024-11-13T07:34:23","modified_gmt":"2024-11-12T23:34:23","slug":"%e7%94%a8mysql%e5%af%a6%e7%8f%be%e9%a1%9e%e4%bc%bc%e6%96%bcoracle-dblink%e7%9a%84%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194547\/","title":{"rendered":"\u7528MySQL\u5be6\u73fe\u985e\u4f3c\u65bcOracle dblink\u7684\u529f\u80fd"},"content":{"rendered":"<h1 id=\"%e7%94%a8mysql%e5%af%a6%e7%8f%be%e9%a1%9e%e4%bc%bc%e6%96%bcoracle-dblink%e7%9a%84%e5%8a%9f%e8%83%bd-DwSiwJjeaZ\">\u7528MySQL\u5be6\u73fe\u985e\u4f3c\u65bcOracle dblink\u7684\u529f\u80fd<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u8de8\u6578\u64da\u5eab\u7684\u6578\u64da\u8a2a\u554f\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u4e00\u500b\u540d\u70badblink\u7684\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u5728\u4e0d\u540c\u7684Oracle\u6578\u64da\u5eab\u4e4b\u9593\u9032\u884c\u67e5\u8a62\u548c\u6578\u64da\u64cd\u4f5c\u3002\u7136\u800c\uff0cMySQL\u4e26\u6c92\u6709\u5167\u5efa\u7684dblink\u529f\u80fd\uff0c\u4f46\u6211\u5011\u53ef\u4ee5\u901a\u904e\u5176\u4ed6\u65b9\u6cd5\u4f86\u5be6\u73fe\u985e\u4f3c\u7684\u529f\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728MySQL\u4e2d\u5be6\u73fe\u985e\u4f3c\u65bcOracle dblink\u7684\u529f\u80fd\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"mysql%e4%b8%ad%e7%9a%84%e8%b7%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2-DwSiwJjeaZ\">MySQL\u4e2d\u7684\u8de8\u6578\u64da\u5eab\u67e5\u8a62<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u8de8\u6578\u64da\u5eab\u67e5\u8a62\u53ef\u4ee5\u901a\u904e\u4f7f\u7528\u6578\u64da\u5eab\u540d\u7a31\u4f86\u5be6\u73fe\u3002\u9019\u610f\u5473\u8457\u5982\u679c\u4f60\u6709\u591a\u500b\u6578\u64da\u5eab\u5728\u540c\u4e00\u500bMySQL\u5be6\u4f8b\u4e2d\uff0c\u4f60\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u6578\u64da\u5eab\u540d\u7a31\u4f86\u8a2a\u554f\u5176\u4ed6\u6578\u64da\u5eab\u7684\u8868\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM database1.table1;\nSELECT * FROM database2.table2;<\/code><\/pre>\n<p>\u9019\u7a2e\u65b9\u6cd5\u9069\u7528\u65bc\u5728\u540c\u4e00\u500bMySQL\u4f3a\u670d\u5668\u4e0a\u904b\u884c\u7684\u6578\u64da\u5eab\uff0c\u4f46\u5982\u679c\u4f60\u9700\u8981\u8a2a\u554f\u4e0d\u540c\u4f3a\u670d\u5668\u4e0a\u7684\u6578\u64da\u5eab\uff0c\u5247\u9700\u8981\u5176\u4ed6\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8federated%e5%bc%95%e6%93%8e-DwSiwJjeaZ\">\u4f7f\u7528Federated\u5f15\u64ce<\/h2>\n<p>MySQL\u63d0\u4f9b\u4e86\u4e00\u500b\u540d\u70baFederated\u7684\u5b58\u5132\u5f15\u64ce\uff0c\u5141\u8a31\u7528\u6236\u5728\u4e00\u500bMySQL\u4f3a\u670d\u5668\u4e0a\u8a2a\u554f\u53e6\u4e00\u500bMySQL\u4f3a\u670d\u5668\u7684\u8868\u3002\u9019\u985e\u4f3c\u65bcOracle\u7684dblink\u529f\u80fd\u3002\u8981\u4f7f\u7528Federated\u5f15\u64ce\uff0c\u4f60\u9700\u8981\u5728MySQL\u4e2d\u555f\u7528\u5b83\uff0c\u7136\u5f8c\u5275\u5efa\u4e00\u500bFederated\u8868\u4f86\u6307\u5411\u9060\u7a0b\u6578\u64da\u5eab\u7684\u8868\u3002<\/p>\n<h3 id=\"%e5%95%9f%e7%94%a8federated%e5%bc%95%e6%93%8e-DwSiwJjeaZ\">\u555f\u7528Federated\u5f15\u64ce<\/h3>\n<p>\u9996\u5148\uff0c\u78ba\u4fdd\u4f60\u7684MySQL\u4f3a\u670d\u5668\u555f\u7528\u4e86Federated\u5f15\u64ce\u3002\u4f60\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u547d\u4ee4\u6aa2\u67e5\uff1a<\/p>\n<pre><code>SHOW ENGINES;<\/code><\/pre>\n<p>\u5982\u679cFederated\u5f15\u64ce\u986f\u793a\u70ba\u201cYES\u201d\uff0c\u5247\u8868\u793a\u5df2\u555f\u7528\u3002\u5982\u679c\u6c92\u6709\uff0c\u4f60\u9700\u8981\u5728MySQL\u914d\u7f6e\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u884c\uff1a<\/p>\n<pre><code>[mysqld]\nfederated<\/code><\/pre>\n<h3 id=\"%e5%89%b5%e5%bb%bafederated%e8%a1%a8-DwSiwJjeaZ\">\u5275\u5efaFederated\u8868<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u4f60\u53ef\u4ee5\u5275\u5efa\u4e00\u500bFederated\u8868\u4f86\u9023\u63a5\u5230\u9060\u7a0b\u6578\u64da\u5eab\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u4f60\u6709\u4e00\u500b\u9060\u7a0b\u6578\u64da\u5eab\u7684\u9023\u63a5\u4fe1\u606f\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u9060\u7a0b\u4f3a\u670d\u5668\uff1a192.168.1.100<\/li>\n<li>\u7528\u6236\u540d\uff1aremote_user<\/li>\n<li>\u5bc6\u78bc\uff1aremote_password<\/li>\n<li>\u6578\u64da\u5eab\u540d\uff1aremote_db<\/li>\n<li>\u8868\u540d\uff1aremote_table<\/li>\n<\/ul>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u5275\u5efaFederated\u8868\uff1a<\/p>\n<pre><code>CREATE TABLE local_table (\n    id INT,\n    name VARCHAR(100)\n) ENGINE=FEDERATED\nCONNECTION='mysql:\/\/remote_user:remote_password@192.168.1.100\/remote_db\/remote_table';<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u4f60\u5c31\u53ef\u4ee5\u50cf\u64cd\u4f5c\u672c\u5730\u8868\u4e00\u6a23\u64cd\u4f5c\u9019\u500bFederated\u8868\uff0c\u9032\u884c\u67e5\u8a62\u548c\u6578\u64da\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8mysql%e7%9a%84%e9%80%a3%e6%8e%a5%e5%99%a8-DwSiwJjeaZ\">\u4f7f\u7528MySQL\u7684\u9023\u63a5\u5668<\/h2>\n<p>\u9664\u4e86Federated\u5f15\u64ce\uff0c\u53e6\u4e00\u7a2e\u65b9\u6cd5\u662f\u4f7f\u7528MySQL\u7684\u9023\u63a5\u5668\uff08\u5982MySQL Connector\/J\u6216MySQL Connector\/Python\uff09\u4f86\u5728\u61c9\u7528\u7a0b\u5e8f\u5c64\u9762\u5be6\u73fe\u8de8\u6578\u64da\u5eab\u67e5\u8a62\u3002\u9019\u7a2e\u65b9\u6cd5\u9700\u8981\u5728\u61c9\u7528\u7a0b\u5e8f\u4e2d\u7de8\u5beb\u4ee3\u78bc\u4f86\u9023\u63a5\u5230\u4e0d\u540c\u7684\u6578\u64da\u5eab\uff0c\u7136\u5f8c\u57f7\u884c\u67e5\u8a62\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-DwSiwJjeaZ\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Python\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u9023\u63a5\u5230\u5169\u500b\u4e0d\u540c\u7684MySQL\u6578\u64da\u5eab\u4e26\u57f7\u884c\u67e5\u8a62\uff1a<\/p>\n<pre><code>import mysql.connector\n\n# \u9023\u63a5\u5230\u7b2c\u4e00\u500b\u6578\u64da\u5eab\ndb1 = mysql.connector.connect(\n    host=\"localhost\",\n    user=\"user1\",\n    password=\"password1\",\n    database=\"database1\"\n)\n\n# \u9023\u63a5\u5230\u7b2c\u4e8c\u500b\u6578\u64da\u5eab\ndb2 = mysql.connector.connect(\n    host=\"192.168.1.100\",\n    user=\"user2\",\n    password=\"password2\",\n    database=\"database2\"\n)\n\ncursor1 = db1.cursor()\ncursor2 = db2.cursor()\n\n# \u5f9e\u7b2c\u4e00\u500b\u6578\u64da\u5eab\u67e5\u8a62\u6578\u64da\ncursor1.execute(\"SELECT * FROM table1\")\nresults1 = cursor1.fetchall()\n\n# \u5f9e\u7b2c\u4e8c\u500b\u6578\u64da\u5eab\u67e5\u8a62\u6578\u64da\ncursor2.execute(\"SELECT * FROM table2\")\nresults2 = cursor2.fetchall()\n\n# \u8655\u7406\u6578\u64da\nfor row in results1:\n    print(row)\n\nfor row in results2:\n    print(row)\n\n# \u95dc\u9589\u9023\u63a5\ncursor1.close()\ncursor2.close()\ndb1.close()\ndb2.close();<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-DwSiwJjeaZ\">\u7e3d\u7d50<\/h2>\n<p>\u96d6\u7136MySQL\u6c92\u6709\u5167\u5efa\u7684dblink\u529f\u80fd\uff0c\u4f46\u901a\u904e\u4f7f\u7528Federated\u5f15\u64ce\u6216\u61c9\u7528\u7a0b\u5e8f\u5c64\u9762\u7684\u9023\u63a5\u5668\uff0c\u6211\u5011\u4ecd\u7136\u53ef\u4ee5\u5be6\u73fe\u8de8\u6578\u64da\u5eab\u7684\u67e5\u8a62\u548c\u6578\u64da\u64cd\u4f5c\u3002\u9019\u4e9b\u65b9\u6cd5\u63d0\u4f9b\u4e86\u9748\u6d3b\u6027\uff0c\u5141\u8a31\u7528\u6236\u5728\u4e0d\u540c\u7684MySQL\u4f3a\u670d\u5668\u4e4b\u9593\u9032\u884c\u6578\u64da\u4ea4\u4e92\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5728MySQL\u4e2d\u5be6\u73fe\u985e\u4f3cOracle dblink\u7684\u529f\u80fd\uff0c\u5be6\u73fe\u8de8\u6578\u64da\u5eab\u7684\u9ad8\u6548\u6578\u64da\u8a2a\u554f\u8207\u6574\u5408\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-194547","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194547","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=194547"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194547\/revisions"}],"predecessor-version":[{"id":194548,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194547\/revisions\/194548"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194547"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194547"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194547"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}