{"id":6739,"date":"2024-11-14T14:45:38","date_gmt":"2024-11-14T06:45:38","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6739\/"},"modified":"2024-11-14T14:45:38","modified_gmt":"2024-11-14T06:45:38","slug":"%e5%a6%82%e4%bd%95%e9%ab%98%e6%95%88%e5%9c%b0%e4%bf%ae%e6%94%b9%e5%a4%9a%e4%b8%aa%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%ad%e5%90%8c%e5%90%8d%e8%a1%a8%e7%9a%84%e6%95%b0%e6%8d%ae%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6739\/","title":{"rendered":"## \u5982\u4f55\u9ad8\u6548\u5730\u4fee\u6539\u591a\u4e2a\u6570\u636e\u5e93\u4e2d\u540c\u540d\u8868\u7684\u6570\u636e\uff1f"},"content":{"rendered":"

\"##<\/p>\n

\u540c\u65f6\u4fee\u6539\u591a\u4e2a\u6570\u636e\u5e93\u4e2d\u540c\u540d\u8868\u7684\u6280\u5de7<\/strong><\/p>\n

\u4f60\u6709\u5927\u7ea6 60 \u4e2a\u6570\u636e\u5e93\uff0c\u6bcf\u4e2a\u6570\u636e\u5e93\u4e2d\u6709\u4e00\u5f20\u540c\u540d\u7684\u8868\uff0c\u9700\u8981\u5bf9\u6240\u6709\u6570\u636e\u5e93\u4e2d\u7684\u8fd9\u5f20\u8868\u8fdb\u884c\u589e\u5220\u6539\u67e5\u3002\u5982\u4f55\u5b9e\u73b0\u6b64\u64cd\u4f5c\uff1f<\/p>\n

\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n

\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\u6765\u5b9e\u73b0\uff1a<\/p>\n

1. \u67e5\u770b\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u8868\uff1a<\/strong><\/p>\n

select * from information_schema.`tables` where table_name = 'undo_log';<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
2. \u4f7f\u7528\u5faa\u73af\u8fde\u63a5\u5230\u6bcf\u4e2a\u6570\u636e\u5e93\u5e76\u64cd\u4f5c\u8868\uff1a<\/strong><\/p>\n
for i in range(60):\n    # \u6839\u636e\u5faa\u73af\u7d22\u5f15\u683c\u5f0f\u5316\u6570\u636e\u5e93\u540d\u79f0\n    db_name = 'db' + str(i)\n\n    # \u8fde\u63a5\u5230\u6570\u636e\u5e93\n    connection = mysql.connector.connect(\n        host='localhost',\n        user='root',\n        password='password',\n        database=db_name\n    )\n\n    # \u521b\u5efa\u6e38\u6807\n    cursor = connection.cursor()\n\n    # \u6267\u884c\u64cd\u4f5c\uff08\u4f8b\u5982\u66f4\u65b0\u6216\u5220\u9664\uff09\n    cursor.execute(\"UPDATE undo_log SET message='Updated message' WHERE id=1\")\n\n    # \u63d0\u4ea4\u66f4\u6539\n    connection.commit()\n\n    # \u5173\u95ed\u8fde\u63a5\n    cursor.close()\n    connection.close()<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u6ce8\u610f\uff1a<\/strong><\/p>\n
    \n
  • \u786e\u4fdd\u5177\u6709\u8bbf\u95ee\u6240\u6709\u6570\u636e\u5e93\u7684\u6743\u9650\u3002<\/li>\n
  • \u6839\u636e\u4f60\u7684\u7279\u5b9a\u9700\u6c42\u8c03\u6574 sql \u64cd\u4f5c\u3002<\/li>\n
  • \u8fd9\u53ea\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff0c\u4f60\u9700\u8981\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8fdb\u884c\u8c03\u6574\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662f## \u5982\u4f55\u9ad8\u6548\u5730\u4fee\u6539\u591a\u4e2a\u6570\u636e\u5e93\u4e2d\u540c\u540d\u8868\u7684\u6570\u636e\uff1f\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":"
    \u540c\u65f6\u4fee\u6539\u591a\u4e2a\u6570\u636e\u5e93\u4e2d\u540c\u540d\u8868\u7684\u6280\u5de7 \u4f60\u6709\u5927\u7ea6 60 \u4e2a\u6570\u636e\u5e93\uff0c\u6bcf\u4e2a\u6570\u636e\u5e93\u4e2d\u6709\u4e00\u5f20\u540c\u540d\u7684\u8868\uff0c\u9700\u8981\u5bf9\u6240\u6709\u6570\u636e\u5e93\u4e2d\u7684\u8fd9\u5f20\u8868\u8fdb\u884c\u589e\u5220\u6539\u67e5\u3002\u5982\u4f55\u5b9e\u73b0\u6b64\u64cd\u4f5c\uff1f \u89e3\u51b3\u65b9\u6848\uff1a \u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\u6765\u5b9e\u73b0\uff1a 1. \u67e5\u770b\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u8868\uff1a select * from information_schema.`tables` where table_name = ‘undo_log’; \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528\u5faa\u73af\u8fde\u63a5\u5230\u6bcf\u4e2a\u6570\u636e\u5e93\u5e76\u64cd\u4f5c\u8868\uff1a for i in range(60): # \u6839\u636e\u5faa\u73af\u7d22\u5f15\u683c\u5f0f\u5316\u6570\u636e\u5e93\u540d\u79f0 db_name = ‘db’ + str(i) # \u8fde\u63a5\u5230\u6570\u636e\u5e93 connection = mysql.connector.connect( host=’localhost’, user=’root’, password=’password’, database=db_name ) # \u521b\u5efa\u6e38\u6807 cursor = connection.cursor() # \u6267\u884c\u64cd\u4f5c\uff08\u4f8b\u5982\u66f4\u65b0\u6216\u5220\u9664\uff09 cursor.execute(“UPDATE undo_log SET message=’Updated message’ WHERE id=1”) # […]<\/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-6739","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6739","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=6739"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6739\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}