{"id":903,"date":"2025-03-22T14:30:20","date_gmt":"2025-03-22T06:30:20","guid":{"rendered":"https:\/\/eve2333.top\/?p=903"},"modified":"2025-03-22T14:30:21","modified_gmt":"2025-03-22T06:30:21","slug":"mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e5%85%a5%e9%97%a8%e5%88%b0%e5%a4%a7%e8%9b%87%e5%b0%9a%e7%a1%85%e8%b0%b7%e5%ae%8b%e7%ba%a2%e5%ba%b7%e8%80%81%e5%b8%88%e7%ac%94%e8%ae%b0-%e9%ab%98%e7%ba%a7%e7%af%87-pa-7","status":"publish","type":"post","link":"https:\/\/eve2333.top\/?p=903","title":{"rendered":"MySQL\u6570\u636e\u5e93\u5165\u95e8\u5230\u5927\u86c7\u5c1a\u7845\u8c37\u5b8b\u7ea2\u5eb7\u8001\u5e08\u7b14\u8bb0 \u9ad8\u7ea7\u7bc7 part 7"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">&nbsp;\u7b2c07\u7ae0_InnoDB\u6570\u636e\u5b58\u50a8\u7ed3\u6784<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1.\u6570\u636e\u5e93\u7684\u5b58\u50a8\u7ed3\u6784\uff1a\u9875<\/h2>\n\n\n\n<p>\u7d22\u5f15\u7ed3\u6784\u7ed9\u6211\u4eec\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u7d22\u5f15\u65b9\u5f0f\uff0c\u4e0d\u8fc7\u7d22\u5f15\u4fe1\u606f\u4ee5\u53ca\u6570\u636e\u8bb0\u5f55\u90fd\u662f\u4fdd\u5b58\u5728\u6587\u4ef6\u4e0a\u7684\uff0c\u786e\u5207\u8bf4\u662f\u5b58\u50a8\u5728\u9875\u7ed3\u6784\u4e2d\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u7d22\u5f15\u662f\u5728\u5b58\u50a8\u5f15\u64ce\u4e2d\u5b9e\u73b0\u7684\uff0cMySQL\u4e0a\u7684\u5b58\u50a8\u5f15\u64ce\u8d1f\u8d23\u5bf9\u8868\u4e2d\u6570\u636e\u7684\u8bfb\u53d6\u548c\u5199\u5165\u5de5\u4f5c\u3002\u4e0d\u540c\u5b58\u50a8\u5f15\u64ce\u4e2d\u5b58\u653e\u7684\u683c\u5f0f\u4e00\u822c\u662f\u4e0d\u540c\u7684\uff0c\u751a\u81f3\u6709\u7684\u5b58\u50a8\u5f15\u64ce\u6bd4\u5982Memory\u90fd\u4e0d\u7528\u78c1\u76d8\u6765\u5b58\u50a8\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u7531\u4e8eInnoDB\u662fMySQL\u7684\u9ed8\u8ba4\u5b58\u50a8\u5f15\u64ce\uff0c\u6240\u4ee5\u672c\u7ae0\u5256\u6790InnoDB\u5b58\u50a8\u5f15\u64ce\u7684\u6570\u636e\u5b58\u50a8\u7ed3\u6784\u3002InnoDB \u7d22\u5f15\u548c\u6570\u636e\u8bb0\u5f55\u5b58\u50a8\u5728*.idb\u6587\u4ef6\u4e2d\uff0cMyISAM \u7d22\u5f15\u5b58\u50a8\u5728*.MYI\u6587\u4ef6\u4e2d\uff0c\u6570\u636e\u8bb0\u5f55\u5b58\u50a8\u5728*.MYD\u6587\u4ef6\u4e2d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">&nbsp;1.1 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class=\"wp-block-heading\">&nbsp;1.3 \u9875\u7684\u5927\u5c0f<\/h3>\n\n\n\n<p>\u4e0d\u540c\u7684\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08\u7b80\u79f0DBMS\uff09\u7684\u9875\u5927\u5c0f\u4e0d\u540c\u3002\u6bd4\u5982\u5728MySQL\u7684InnoDB\u5b58\u50a8\u5f15\u64ce\u4e2d\uff0c\u9ed8\u8ba4\u9875\u7684\u5927\u5c0f\u662f16KB\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e0b\u9762\u7684\u547d\u4ee4\u6765\u8fdb\u884c\u67e5\u770b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mysql&gt; show variables like '%innodb_page_size%';<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">1.2 \u9875\u7ed3\u6784\u6982\u8ff0<\/h3>\n\n\n\n<p>\u9875a\u3001\u9875b\u3001\u9875c..\u9875n\u8fd9\u4e9b\u9875\u53ef\u4ee5\u4e0d\u5728\u7269\u7406\u7ed3\u6784\u4e0a\u76f8\u8fde\uff0c\u53ea\u8981\u901a\u8fc7<strong>\u53cc\u5411\u94fe\u8868\u76f8\u5173\u8054<\/strong>\u5373\u53ef\u3002\u6bcf\u4e2a\u6570\u636e\u9875\u4e2d\u7684\u8bb0\u5f55\u4f1a\u6309\u7167<strong>\u4e3b\u952e\u503c\u4ece\u5c0f\u5230\u5927\u7684\u987a\u5e8f<\/strong>\u7ec4\u6210<strong>\u4e00\u4e2a\u5355\u5411\u94fe\u8868<\/strong>\uff0c\u6bcf\u4e2a\u6570\u636e\u9875\u90fd\u4f1a\u4e3a\u5b58\u50a8\u5728\u5b83\u91cc\u8fb9\u7684\u8bb0\u5f55\u751f\u6210\u4e00\u4e2a\u9875\u76ee\u5f55\uff0c\u5728\u901a\u8fc7\u4e3b\u952e\u67e5\u627e\u67d0\u6761\u8bb0\u5f55\u7684\u65f6\u5019\u53ef\u4ee5<strong>\u5728\u9875\u76ee\u5f55\u4e2d\u4f7f\u7528\u4e8c\u5206\u6cd5<\/strong>\u5feb\u901f\u5b9a\u4f4d\u5230\u5bf9\u5e94\u7684\u69fd\uff0c\u7136\u540e\u518d\u904d\u5386\u8be5\u69fd\u5bf9\u5e94\u5206\u7ec4\u4e2d\u7684\u8bb0\u5f55\u5373\u53ef\u5feb\u901f\u627e\u5230\u6307\u5b9a\u7684\u8bb0\u5f55\u3002\u4ee5\u53ca\u6bcf\u4e2a\u9875\u90fd\u4f1a\u5b58\u50a8\u6700\u5c0f\u8bb0\u5f55\u548c\u6700\u5927\u8bb0\u5f55<\/p>\n\n\n\n<p>\u73b0\u5728\u5047\u8bbe\u6211\u4eec\u901a\u8fc7B+\u6811\u627e\u5230\u4e86\u5728\u9875A\u4e2d,\u9875A\u5171\u67091000\u6761\u6570\u636e , \u4f46\u662f\u4f60\u4e5f\u77e5\u9053\u5355\u94fe\u8868\u7684\u67e5\u627e\u8f83\u6162,\u65f6\u95f4\u590d\u6742\u5ea6O(N) , \u4e8e\u662f\u9875\u76ee\u5f55\u5e94\u8fd0\u800c\u751f ,&nbsp;<\/p>\n\n\n\n<p>&nbsp;1.4 \u9875\u7684\u4e0a\u5c42\u7ed3\u6784<\/p>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" height=\"408\" width=\"673\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/61e7554105e14d65b9d9b7ce5d26956a.png\" alt=\"\"><\/p>\n\n\n\n<p>\u533a\uff08Extent\uff09\u662f\u6bd4\u9875\u5927\u4e00\u7ea7\u7684\u5b58\u50a8\u7ed3\u6784\uff0c\u5728InnoDB\u5b58\u50a8\u5f15l\u64ce\u4e2d\uff0c<strong>\u4e00\u4e2a\u533a\u4f1a\u5206\u914d64\u4e2a\u8fde\u7eed\u7684\u9875<\/strong>\u3002\u56e0\u4e3aInnoDB\u4e2d\u7684\u9875\u5927\u5c0f\u9ed8\u8ba4\u662f16KB\uff0c\u6240\u4ee5\u4e00\u4e2a\u533a\u7684\u5927\u5c0f\u662f64*16KB=1MB\u3002<\/p>\n\n\n\n<p>\u6bb5\uff08Segment\uff09\u7531\u4e00\u4e2a\u6216\u591a\u4e2a\u533a\u7ec4\u6210\uff0c\u533a\u5728\u6587\u4ef6\u7cfb\u7edf\u662f\u4e00\u4e2a\u8fde\u7eed\u5206\u914d\u7684\u7a7a\u95f4\uff08\u5728InnoDB\u4e2d\u662f\u8fde\u7eed\u768464\u4e2a\u9875\uff09\u4e0d\u8fc7\u5728\u6bb5\u4e2d\u4e0d\u8981\u6c42\u533a\u4e0e\u533a\u4e4b\u95f4\u662f\u76f8\u90bb\u7684\u3002<br><strong>\u6bb5\u662f\u6570\u636e\u5e93\u4e2d\u7684\u5206\u914d\u5355\u4f4d\uff0c\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u5e93\u5bf9\u8c61\u4ee5\u4e0d\u540c\u7684\u6bb5\u5f62\u5f0f\u5b58\u5728<\/strong>\u3002\u5f53\u6211\u4eec\u521b\u5efa\u6570\u636e\u8868\u3001\u7d22\u5f15\u7684\u65f6\u5019\uff0c\u5c31\u4f1a\u76f8\u5e94\u521b\u5efa\u5bf9\u5e94\u7684\u6bb5\uff0c\u6bd4\u5982\u521b\u5efa\u4e00\u5f20\u8868\u65f6\u4f1a\u521b\u5efa\u4e00\u4e2a<strong>\u8868\u6bb5<\/strong>\uff0c\u521b\u5efa\u4e00\u4e2a\u7d22\u5f15\u65f6\u4f1a\u521b\u5efa\u4e00\u4e2a<strong>\u7d22\u5f15\u6bb5<\/strong>\u3002<\/p>\n\n\n\n<p>\u8868\u7a7a\u95f4\uff08Tablespace\uff09\u662f\u4e00\u4e2a\u903b\u8f91\u5bb9\u5668\uff0c\u8868\u7a7a\u95f4\u5b58\u50a8\u7684\u5bf9\u8c61\u662f\u6bb5\uff0c\u5728\u4e00\u4e2a\u8868\u7a7a\u95f4\u4e2d\u53ef\u4ee5\u6709\u4e00\u4e2a\u6216\u591a\u4e2a\u6bb5\uff0c\u4f46\u662f\u4e00\u4e2a\u6bb5\u53ea\u80fd\u5c5e\u4e8e\u4e00\u4e2a\u8868\u7a7a\u95f4\u3002\u6570\u636e\u5e93\u7531\u4e00\u4e2a\u6216\u591a\u4e2a\u8868\u7a7a\u95f4\u7ec4\u6210\uff0c\u8868\u7a7a\u95f4\u4ece\u7ba1\u7406\u4e0a\u53ef\u4ee5\u5212\u5206\u4e3a<strong>\u7cfb\u7edf\u8868\u7a7a\u95f4\u3001\u7528\u6237\u8868\u7a7a\u95f4\u3001\u64a4\u9500\u8868\u7a7a\u95f4\u3001\u4e34\u65f6\u8868\u7a7a\u95f4\u7b49\u3002<\/strong><\/p>\n\n\n\n<p>\u6bd4\u5982mysql\u91cc\u9762\u6709\u4e00\u4e2a\u6587\u4ef6 , ibdatal\u53eb\u505a\u7cfb\u7edf\u8868\u7a7a\u95f4,\u9700\u8981\u6ce8\u610f\u7684\u4e00\u70b9\u662f\uff0c\u5728\u4e00\u4e2aMySQL\u670d\u52a1\u5668\u4e2d\uff0c\u7cfb\u7edf\u8868\u7a7a\u95f4\u53ea\u6709\u4e00\u4efd\u3002\u4eceMySQL5.5.7\u5230MySQL5.6.6\u4e4b\u95f4\u7684\u5404\u4e2a\u7248\u672c\u4e2d\uff0c\u6211\u4eec\u8868\u4e2d\u7684\u6570\u636e\u90fd\u4f1a\u88ab\u9ed8\u8ba4\u5b58\u50a8\u5230\u8fd9\u7cfb\u7edf\u8868\u7a7a\u95f4\u3002\u5728MySQL5.6.6\u4ee5\u53ca\u4e4b\u540e\u7684\u7248\u672c\u4e2d\uff0cInnoDB\u800c\u662f\u4e3a\u6bcf\u4e00\u4e2a\u8868\u5efa\u7acb\u4e00\u4e2a\u72ec\u7acb\u8868\u7a7a\u95f4\uff0c\u4e5f\u5c31\u662f\u8bf4\u6211\u4eec\u521b\u5efa\u4e86\u591a\u5c11\u4e2a\u8868\uff0c\u5c31\u6709\u591a\u5c11\u4e2a\u72ec\u7acb\u8868\u7a7a\u95f4\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. \u9875\u7684\u5185\u90e8\u7ed3\u6784&nbsp;<\/h2>\n\n\n\n<p>\u9875\u5982\u679c\u6309\u7c7b\u578b\u5212\u5206\u7684\u8bdd\uff0c\u5e38\u89c1\u7684\u6709<strong>\u6570\u636e\u9875\uff08\u4fdd\u5b58B+\u6811\u8282\u70b9\uff09<\/strong>\u3001\u7cfb\u7edf\u9875\u3001Undo\u9875\u548c\u4e8b\u52a1\u6570\u636e\u9875\u7b49\u3002\u6570\u636e\u9875\u662f\u6211\u4eec\u6700\u5e38\u4f7f\u7528\u7684\u9875\u3002<\/p>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" height=\"332\" width=\"682\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/8a78fadca9cc4df094fc0e983a34d7c5.png\" alt=\"\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8d85\u7ea7\u5927\u56fe\u7247<\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"712\" src=\"https:\/\/eve2333.top\/wp-content\/uploads\/2025\/03\/1742624959-image-1024x712.png\" alt=\"\" class=\"wp-image-904\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2025\/03\/1742624959-image-1024x712.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2025\/03\/1742624959-image-300x209.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2025\/03\/1742624959-image-768x534.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2025\/03\/1742624959-image-1536x1069.png 1536w, https:\/\/eve2333.top\/wp-content\/uploads\/2025\/03\/1742624959-image.png 2015w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u7b2c\u4e00\u90e8\u5206File Header 38\u5b57\u8282\u548cFileTrailer 8\u5b57\u8282<\/h4>\n\n\n\n<p>\u63cf\u8ff0\u5404\u79cd\u9875\u7684\u901a\u7528\u4fe1\u606f\uff08\u6bd4\u5982\u9875\u7684\u7f16\u53f7\u3001\u5176\u4e0a\u4e00\u9875\u3001\u4e0b\u4e00\u9875\u662f\u8c01\u7b49\uff09<\/p>\n\n\n\n<p>1. FIL_PAGE_OFFSET\uff084\u5b57\u8282\uff09<br>\u6bcf\u4e00\u4e2a\u9875\u90fd\u6709\u4e00\u4e2a\u5355\u72ec\u7684\u9875\u53f7\uff0c\u5c31\u8ddf\u4f60\u7684\u8eab\u4efd\u8bc1\u53f7\u7801\u4e00\u6837\uff0cInnoDB\u901a\u8fc7\u9875\u53f7\u53ef\u4ee5\u552f\u4e00\u5b9a\u4f4d\u4e00\u4e2a\u9875\u3002\u5c31\u662fB+\u6811\u91cc\u9762\u90a3\u4e2a\u9875\u53f7<\/p>\n\n\n\n<p>2. FIL_PAGE_TYPE(2\u5b57\u8282)<br>\u8fd9\u4e2a\u4ee3\u8868\u5f53\u524d\u9875\u7684\u7c7b\u578b\u3002<br>FIL_PAGE_UNDO_LOG&nbsp; &nbsp; &nbsp;0x0002&nbsp; &nbsp; &nbsp;Undo\u65e5\u5fd7\u9875<br>FIL_PAGE_TYPE_SYS&nbsp; &nbsp; &nbsp; 0x0006&nbsp; &nbsp; &nbsp;\u7cfb\u7edf\u9875<br>FIL_PAGE_INDEX&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0x45BF&nbsp; &nbsp; &nbsp;\u7d22\u5f15\u9876\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u6240\u8bf4\u7684\u6570\u636e\u9875<\/p>\n\n\n\n<p>3. FIL_PAGE_PREV\uff084\u5b57\u8282\uff09\u548cFIL_PAGE_NEXT\uff084\u5b57\u8282\uff09<br>InnoDB\u90fd\u662f\u4ee5\u9875\u4e3a\u5355\u4f4d\u5b58\u653e\u6570\u636e\u7684\uff0c\u5982\u679c\u6570\u636e\u5206\u6563\u5230\u591a\u4e2a\u4e0d\u8fde\u7eed\u7684\u9875\u4e2d\u5b58\u50a8\u7684\u8bdd\u9700\u8981\u628a<br>\u8fd9\u4e9b\u9875\u5173\u8054\u8d77\u6765\uff0c<strong>FIL_PAGE_PREV\u548cFIL_PAGE_NEXT\u5c31\u5206\u522b\u4ee3\u8868\u672c\u9875\u7684\u4e0a\u4e00\u4e2a\u548c\u4e0b<br>\u4e00\u4e2a\u9875\u7684\u9875\u53f7\u3002\u8fd9\u6837\u901a\u8fc7\u5efa\u7acb\u4e00\u4e2a\u53cc\u5411\u94fe\u8868<\/strong>\u628a\u8bb8\u8bb8\u591a\u591a\u7684\u9875\u5c31\u90fd\u4e32\u8054\u8d77\u6765\u4e86\uff0c\u4fdd\u8bc1\u8fd9\u4e9b\u9875<br>\u4e4b\u95f4\u4e0d\u9700\u8981\u662f\u7269\u7406\u4e0a\u7684\u8fde\u7eed\uff0c\u800c\u662f\u903b\u8f91\u4e0a\u7684\u8fde\u7eed\u3002<\/p>\n\n\n\n<p>4. FIL_PAGE_SPACE_OR_CHKSUM (4\u5b57\u8282\uff09<br>\u4ee3\u8868\u5f53\u524d\u9875\u9762\u7684\u6821\u9a8c\u548c\uff08checksum\uff09<\/p>\n\n\n\n<p>\u4ec0\u4e48\u662f\u6821\u9a8c\u548c\uff1f<br>\u5c31\u662f\u5bf9\u4e8e\u4e00\u4e2a\u5f88\u957f\u7684\u5b57\u8282\u4e32\u6765\u8bf4\uff0c\u6211\u4eec\u4f1a\u901a\u8fc7\u67d0\u79cd\u7b97\u6cd5\u6765\u8ba1\u7b97\u4e00\u4e2a\u6bd4\u8f83\u77ed\u7684\u503c\u6765\u4ee3\u8868\u8fd9\u4e2a<br>\u5f88\u957f\u7684\u5b57\u8282\u4e32\uff0c\u8fd9\u4e2a\u6bd4\u8f83\u77ed\u7684\u503c\u5c31\u79f0\u4e3a\u6821\u9a8c\u548c\u3002<br>\u5728\u6bd4\u8f83\u4e24\u4e2a\u773c\u957f\u7684\u5b57\u8282\u4e32\u4e4b\u524d\uff0c\u5148\u6bd4\u8f83\u8fd9\u4e24\u4e2a\u957f\u5b57\u8282\u4e32\u7684\u6821\u9a8c\u548c\uff0c\u5982\u679c\u6821\u9a8c\u548c\u90fd\u4e0d\u4e00\u6837\uff0c<br>\u5219\u4e24\u4e2a\u957f\u5b57\u8282\u4e32\u80af\u5b9a\u662f\u4e0d\u540c\u7684\uff0c\u6240\u4ee5\u7701\u53bb\u4e86\u76f4\u63a5\u6bd4\u8f83\u4e24\u4e2a\u6bd4\u8f83\u957f\u7684\u5b57\u8282\u4e32\u7684\u65f6\u95f4\u635f\u8017\u3002<\/p>\n\n\n\n<p>\u4f5c\u7528\uff1a<br>InnoDB\u5b58\u50a8\u5f15\u64ce\u4ee5\u9875\u4e3a\u5355\u4f4d\u628a\u6570\u636e\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\u5904\u7406\uff0c\u5982\u679c\u8be5\u9875\u4e2d\u7684\u6570\u636e\u5728\u5185\u5b58\u4e2d\u88ab\u4fee<br>\u6539\u4e86\uff0c\u90a3\u4e48\u5728\u4fee\u6539\u540e\u7684\u67d0\u4e2a\u65f6\u95f4\u9700\u8981\u628a\u6570\u636e\u540c\u6b65\u5230\u78c1\u76d8\u4e2d\u3002\u4f46\u662f\u5728\u540c\u6b65\u4e86\u4e00\u534a\u7684\u65f6\u5019\u65ad\u7535<br>\u4e86\uff0c\u9020\u6210\u4e86\u8be5\u9875\u4f20\u8f93\u7684\u4e0d\u5b8c\u6574\u3002<br>\u4e3a\u4e86\u68c0\u6d4b\u4e00\u4e2a\u9875\u662f\u5426\u5b8c\u6574\uff08\u4e5f\u5c31\u662f\u5728\u540c\u6b65\u7684\u65f6\u5019\u6709\u6ca1\u6709\u53d1\u751f\u53ea\u540c\u6b65\u4e00\u534a\u7684\u5c34\u5c2c\u60c5\u51b5\uff09\uff0c\u8fd9\u65f6\u53ef\u4ee5\u901a\u8fc7\u6587\u4ef6\u5c3e\u7684\u6821\u9a8c\u548c\uff08checksum\u503c\uff09\u4e0e\u6587\u4ef6\u5934\u7684\u6821\u9a8c\u548c\u505a\u6bd4\u5bf9\uff0c\u5982\u679c\u4e24\u4e2a\u503c\u4e0d\u76f8\u7b49\u5219\u8bc1\u660e\u9875\u7684\u4f20\u8f93\u6709\u95ee\u9898\uff0c\u9700\u8981\u91cd\u65b0\u8fdb\u884c\u4f20\u8f93\uff0c\u5426\u5219\u8ba4\u4e3a\u9875\u7684\u4f20\u8f93\u5df2\u7ecf\u5b8c\u6210\u3002\u8fd9\u5c31\u597d\u6bd4\u8fc7\u53bb\u53d1\u7535\u62a5\uff0c\u6700\u540e\u5f97\u52a0\u4e2a\u7ed3\u675f\u7b26\u3002\u5bf9\u8bb2\u673a \u8bf4\u5b8c\u4e86\u5f97 \u52a0 \u5b8c\u6bd5<\/p>\n\n\n\n<p>5.&nbsp; FIL_PAGE_LSN\uff088\u5b57\u8282\uff09<br>\u9875\u9762\u88ab\u6700\u540e\u4fee\u6539\u65f6\u5bf9\u5e94\u7684\u65e5\u5fd7\u5e8f\u5217\u4f4d\u7f6e\uff08\u82f1\u6587\u540d\u662f\uff1aLogSequenceNunber\uff09<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7b2c\u4e8c\u90e8\u5206 \u8bb0\u5f55\u90e8\u5206<\/h4>\n\n\n\n<p>\u9875\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u5b58\u50a8\u8bb0\u5f55\uff0c\u6240\u4ee5\u201c\u6700\u5927\u548c\u6700\u5c0f\u8bb0\u5f55\u201d\u548c\u201c\u7528\u6237\u8bb0\u5f55\u201d\u90e8\u5206\u5360\u4e86\u9875\u7ed3\u6784\u7684\u4e3b\u8981\u7a7a\u95f4\u3002<img loading=\"lazy\" decoding=\"async\" height=\"360\" width=\"683\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/18310ba092a54ae48a7bb18275ee7979.png\" alt=\"\"><\/p>\n\n\n\n<h5 class=\"wp-block-heading\">UserRecords\uff08\u7528\u6237\u8bb0\u5f55)<\/h5>\n\n\n\n<p>UserRecords\u4e2d\u7684\u8fd9\u4e9b\u8bb0\u5f55\u6309\u7167\u6307\u5b9a\u7684\u884c\u683c\u5f0f\u4e00\u6761\u4e00\u6761\u6446\u5728UserRecords\u90e8\u5206\uff0c\u76f8\u4e92\u4e4b\u95f4\u5f62\u6210\u5355\u94fe\u8868\u3002<br>\u7528\u6237\u8bb0\u5f55\u91cc\u7684\u4e00\u6761\u6761\u6570\u636e\u5982\u4f55\u8bb0\u5f55\uff1f<br>\u8fd9\u91cc\u9700\u8981\u8bb2\u8bb2\u8bb0\u5f55\u884c\u683c\u5f0f\u7684<strong>\u8bb0\u5f55\u5934\u4fe1\u606f\u3002<\/strong><\/p>\n\n\n\n<p><strong>\u8df3\u5230COMPACT\u884c\u683c\u5f0f\u7684\u8bb0\u5f55\u5934\u4fe1\u606f\uff085\u5b57\u8282\uff09<\/strong><br>\u8bb0\u5f55\u5934\u4fe1\u606f\u5206\u6210\u51e0\u4e2a\u90e8\u5206\uff1adelete_mask\uff0cmin_rec_mask \uff0crecord_type\uff0cheap_no\uff0cn_owned\uff0cnext_record<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mysql&gt; CREATE TABLE page_demo(\n    -&gt; c1 INT,\n    -&gt; c2 INT,\n    -&gt; c3 VARCHAR(10000),\n    -&gt; PRIMARY KEY (c1)\n    -&gt; ) CHARSET=asci ROW_FORMAT=Compact;\nQuery OK,0 rows affected (0.03 sec)<\/code><\/pre>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" height=\"367\" width=\"606\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/ec949acaeb2342f9af8602a767c2ef1e.png\" alt=\"\"><img loading=\"lazy\" decoding=\"async\" height=\"371\" width=\"682\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/ba30178b5c2249958fc9f8ed889eb04a.png\" alt=\"\"><img loading=\"lazy\" decoding=\"async\" height=\"445\" width=\"654\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/8f9f631829f1405c96d38f5045a4e0e2.png\" alt=\"\"><\/p>\n\n\n\n<h5 class=\"wp-block-heading\">1. delete_mask<\/h5>\n\n\n\n<p>\u8fd9\u4e2a\u5c5e\u6027\u6807\u8bb0\u7740\u5f53\u524d\u8bb0\u5f55\u662f\u5426\u88ab\u5220\u9664\uff0c\u5360\u75281\u4e2a\u4e8c\u8fdb\u5236\u4f4d\u3002<br>\u00b7\u503c\u4e3a0\uff1a\u4ee3\u8868\u8bb0\u5f55\u5e76\u6ca1\u6709\u88ab\u5220\u9664<br>\u00b7\u503c\u4e3a1\uff1a\u4ee3\u8868\u8bb0\u5f55\u88ab\u5220\u9664\u6389\u4e86<\/p>\n\n\n\n<p><strong>\u88ab\u5220\u9664\u7684\u8bb0\u5f55\u4e3a\u4ec0\u4e48\u8fd8\u5728\u9875\u4e2d\u5b58\u50a8\u5462\uff1f<\/strong><br>\u4f60\u4ee5\u4e3a\u5b83\u5220\u9664\u4e86\uff0c\u53ef\u5b83\u8fd8\u5728\u771f\u5b9e\u7684\u78c1\u76d8\u4e0a\u3002<strong>\u8fd9\u4e9b\u88ab\u5220\u9664\u7684\u8bb0\u5f55\u4e4b\u6240\u4ee5\u4e0d\u7acb\u5373\u4ece\u78c1\u76d8\u4e0a\u79fb\u9664\uff0c\u662f\u56e0\u4e3a\u79fb\u9664\u5b83\u4eec\u4e4b\u540e\u5176\u4ed6\u7684\u8bb0\u5f55\u5728\u78c1\u76d8\u4e0a\u9700\u8981\u91cd\u65b0\u6392\u5217\uff0c\u5bfc\u81f4\u6027\u80fd\u6d88\u8017\u3002\u6240\u4ee5\u53ea\u662f\u6253\u4e00\u4e2a\u5220\u9664\u6807\u8bb0\u800c\u5df2\uff0c<\/strong>\u6240\u6709\u88ab\u5220\u9664\u6389\u7684\u8bb0\u5f55\u90fd\u4f1a\u7ec4\u6210\u4e00\u4e2a\u6240\u8c13\u7684\u5783\u573e\u94fe\u8868\uff0c\u5728\u8fd9\u4e2a\u94fe\u8868\u4e2d\u7684\u8bb0\u5f55\u5360\u7528\u7684\u7a7a\u95f4\u79f0\u4e4b\u4e3a\u53ef\u91cd\u7528\u7a7a\u95f4\uff0c\u4e4b\u540e\u5982\u679c\u6709\u65b0\u8bb0\u5f55\u63d2\u5165\u5230\u8868\u4e2d\u7684\u8bdd\uff0c\u53ef\u80fd\u628a\u8fd9\u4e9b\u88ab\u5220\u9664\u7684\u8bb0\u5f55\u5360\u7528\u7684\u5b58\u50a8\u7a7a\u95f4\u8986\u76d6\u6389\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">2. min_rec_mask<\/h5>\n\n\n\n<p>B+\u6811\u7684\u6bcf\u5c42\u975e\u53f6\u5b50\u8282\u70b9\u4e2d\u7684\u6700\u5c0f\u8bb0\u5f55\u90fd\u4f1a\u6dfb\u52a0\u8be5\u6807\u8bb0\uff0cmin_rec_mask\u503c\u4e3a1\u3002<br>\u6211\u4eec\u81ea\u5df1\u63d2\u5165\u7684\u56db\u6761\u8bb0\u5f55\u7684min_rec_mask\u503c\u90fd\u662fO\uff0c\u610f\u5473\u7740\u5b83\u4eec\u90fd\u4e0d\u662fB+\u6811\u7684\u975e\u53f6\u5b50\u8282\u70b9\u4e2d\u7684\u6700\u5c0f\u8bb0\u5f55\u3002&nbsp;<\/p>\n\n\n\n<p>\u5728\u90a3\u4e00\u7ae0\u662f\u8fd9\u4e48\u8bf4\u7684\uff1a\u4e86\u89e3\uff1a\u8bb0\u5f55\u5934\u4fe1\u606f\u91cc\u8fd8\u6709\u4e00\u4e2a\u53ebmin_rec_mask\u7684\u5c5e\u6027\uff0c\u53ea\u6709\u5728\u5b58\u50a8\u76ee\u5f55\u9879\u8bb0\u5f55\u7684\u9875\u4e2d\u7684\u4e3b\u952e\u503c\u6700\u5c0f\u7684\u76ee\u5f55\u9879\u8bb0\u5f55\u7684min_rec_mask\u503c\u4e3a1\u5176\u4ed6\u522b\u7684\u8bb0\u5f55\u7684min_rec_mask\u503c\u90fd\u662f0\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">3.record_type<\/h5>\n\n\n\n<p>\u8fd9\u4e2a\u5c5e\u6027\u8868\u793a\u5f53\u524d\u8bb0\u5f55\u7684\u7c7b\u578b\uff0c\u4e00\u5171\u67094\u79cd\u7c7b\u578b\u7684\u8bb0\u5f55\uff1a<br>0\uff1a\u8868\u793a\u666e\u901a\u8bb0\u5f55<br>1\uff1a\u8868\u793aB+\u6811\u975e\u53f6\u8282\u70b9\u8bb0\u5f55<br>2\uff1a\u8868\u793a\u6700\u5c0f\u8bb0\u5f55<br>3\uff1a\u8868\u793a\u6700\u5927\u8bb0\u5f55<br>\u4ece\u56fe\u4e2d\u6211\u4eec\u4e5f\u53ef\u4ee5\u770b\u51fa\u6765\uff0c\u6211\u4eec\u81ea\u5df1\u63d2\u5165\u7684\u8bb0\u5f55\u5c31\u662f\u666e\u901a\u8bb0\u5f55\uff0c\u5b83\u4eec\u7684record_type\u503c\u90fd\u662f0\uff0c\u800c\u6700\u5c0f\u8bb0\u5f55\u548c\u6700\u5927\u8bb0\u5f55\u7684record_type\u503c\u5206\u522b\u4e3a2\u548c3\u3002\u81f3\u4e8erecord_type\u4e3a1\u7684\u60c5\u51b5\uff0c\u6211\u4eec\u5728\u7d22\u5f15\u7684\u6570\u636e\u7ed3\u6784\u7ae0\u8282\u8bb2\u8fc7\u3002<\/p>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" height=\"249\" width=\"678\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/cd779c870b2b4ff6bb7d3fb236e68add.png\" alt=\"\"><\/p>\n\n\n\n<h5 class=\"wp-block-heading\">4.heap_no<\/h5>\n\n\n\n<p>\u8fd9\u4e2a\u5c5e\u6027\u8868\u793a\u5f53\u524d\u8bb0\u5f55\u5728\u672c\u9875\u4e2d\u7684\u4f4d\u7f6e\u3002&nbsp;<br>\u4ece\u56fe\u4e2d\u53ef\u4ee5\u770b\u51fa\u6765\uff0c\u6211\u4eec\u63d2\u5165\u76844\u6761\u8bb0\u5f55\u5728\u672c\u9875\u4e2d\u7684\u4f4d\u7f6e\u5206\u522b\u662f\uff1a2\u30013\u30014\u30015\u3002<\/p>\n\n\n\n<p>\u600e\u4e48\u4e0d\u89c1heap_no\u503c\u4e3a0\u548c1\u7684\u8bb0\u5f55\u5462\uff1f<br>MySQL\u4f1a\u81ea\u52a8\u7ed9\u6bcf\u4e2a\u9875\u91cc\u52a0\u4e86\u4e24\u4e2a\u8bb0\u5f55\uff0c\u7531\u4e8e\u8fd9\u4e24\u4e2a\u8bb0\u5f55\u5e76\u4e0d\u662f\u6211\u4eec\u81ea\u5df1\u63d2\u5165\u7684\uff0c\u6240\u4ee5\u6709\u65f6\u5019\u4e5f\u79f0\u4e3a<strong>\u4f2a\u8bb0\u5f55\u6216\u8005\u865a\u62df\u8bb0\u5f55<\/strong>\u3002\u8fd9\u4e24\u4e2a\u4f2a\u8bb0\u5f55\u4e00\u4e2a\u4ee3\u8868<strong>\u6700\u5c0f\u8bb0\u5f55<\/strong>\uff0c\u4e00\u4e2a\u4ee3\u8868<strong>\u6700\u5927\u8bb0\u5f55<\/strong>\u3002\u6700\u5c0f\u8bb0\u5f55\u548c\u6700\u5927\u8bb0\u5f55\u7684heap_no\u503c\u5206\u522b\u662f0\u548c1\uff0c\u4e5f\u5c31\u662f\u8bf4\u5b83\u4eec\u7684\u4f4d\u7f6e\u6700\u9760\u524d\u3002<\/p>\n\n\n\n<p>&nbsp;\u6211\u4eec\u56de\u5230\u7b2c\u4e8c\u90e8\u5206\u7684&nbsp; &nbsp; &nbsp;<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">&nbsp;Infimum+Supremum\uff08\u6700\u5c0f\u6700\u5927\u8bb0\u5f55\uff09<\/h5>\n\n\n\n<p>\u8bb0\u5f55\u53ef\u4ee5\u6bd4\u8f83\u5927\u5c0f\u5417\uff1f<br>\u662f\u7684\uff0c\u8bb0\u5f55\u53ef\u4ee5\u6bd4\u5927\u5c0f\uff0c\u5bf9\u4e8e\u4e00\u6761\u5b8c\u6574\u7684\u8bb0\u5f55\u6765\u8bf4\uff0c\u6bd4\u8f83\u8bb0\u5f55\u7684\u5927\u5c0f\u5c31\u662f\u6bd4\u8f83\u4e3b\u952e\u7684\u5927\u5c0f\u3002\u6bd4\u65b9\u8bf4\u6211\u4eec\u63d2\u5165\u76844\u884c\u8bb0\u5f55\u7684\u4e3b\u952e\u503c\u5206\u522b\u662f\uff1a1\u30012\u30013\u30014\uff0c\u8fd9\u4e5f\u5c31\u610f\u5473\u7740\u8fd94\u6761\u8bb0\u5f55\u662f\u4ece\u5c0f\u5230\u5927\u4f9d\u6b21\u9012\u589e\u3002<br>InnoDB\u89c4\u5b9a\u7684\u6700\u5c0f\u8bb0\u5f55\u4e0e\u6700\u5927\u8bb0\u5f55\u8fd9\u4e24\u6761\u8bb0\u5f55\u7684\u6784\u9020\u5341\u5206\u7b80\u5355\uff0c\u90fd\u662f\u75315\u5b57\u8282\u5927\u5c0f\u7684\u8bb0\u5f55\u5934\u4fe1\u606f\u548c8\u5b57\u8282\u5927\u5c0f\u7684\u4e00\u4e2a\u56fa\u5b9a\u7684\u90e8\u5206\u7ec4\u6210\u7684\uff0c\u5982\u56fe\u6240\u793a\uff1a<img loading=\"lazy\" decoding=\"async\" height=\"369\" width=\"584\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/545a5826200b4a1491de425d35ea9f05.png\" alt=\"\"><\/p>\n\n\n\n<p>\u8fd9\u4e24\u6761\u8bb0\u5f55\u4e0d\u662f\u6211\u4eec\u81ea\u5df1\u5b9a\u4e49\u7684\u8bb0\u5f55\uff0c\u6240\u4ee5\u5b83\u4eec\u5e76\u4e0d\u5b58\u653e\u5728\u9875\u7684<strong>UserRecords<\/strong>\u90e8\u5206\uff0c\u4ed6\u4eec\u88ab\u5355\u72ec\u653e\u5728\u4e00\u4e2a\u79f0\u4e3aInfimum+Supremum\u7684\u90e8\u5206\uff0c\u5982\u56fe\u6240\u793a\uff1a<img loading=\"lazy\" decoding=\"async\" height=\"305\" width=\"682\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/40ed1e54404a4b86badab3032a5688d9.png\" alt=\"\"><\/p>\n\n\n\n<p>&nbsp;\u53c8\u56de\u5230COMPACT\u884c\u683c\u5f0f----------\u8bb0\u5f55\u5934\u4fe1\u606f\uff085\u5b57\u8282\uff09<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">n_owned<\/h5>\n\n\n\n<p>\u9875\u76ee\u5f55\u4e2d\u6bcf\u4e2a\u7ec4\u4e2d\u6700\u540e\u4e00\u6761\u8bb0\u5f55\u7684\u5934\u4fe1\u606f\u4e2d\u4f1a\u5b58\u50a8\u8be5\u7ec4\u4e00\u5171\u6709\u591a\u5c11\u6761\u8bb0\u5f55\uff0c\u4f5c\u4e3an_owned\u5b57\u6bb5\u3002<br>\u8be6\u60c5\u89c1page directory\u3002\uff08\u9875\u76ee\u5f55\u548c\u76ee\u5f55\u9875\u662f\u4e24\u4e2a\u6982\u5ff5\uff0c\u9875\u76ee\u5f55\u4fdd\u5b58\u7684\u662f\u69fd\u4f4d\uff0c\u901a\u8fc7\u5bf9\u6309\u4ece\u5c0f\u5230\u5927\u987a\u5e8f\u6392\u5217\u7684\u69fd\u4f4d\u4f7f\u7528\u4e8c\u5206\u67e5\u627e\u5c31\u53ef\u4ee5\u5feb\u901f\u627e\u5230\u76ee\u6807\u69fd\u4f4d\u5bf9\u5e94\u7684\u7528\u6237\u8bb0\u5f55\uff0c\u800c\u76ee\u5f55\u9875\u4fdd\u5b58\u7684\u662f\u76ee\u5f55\u9879\uff0c\u7531\u4e3b\u952e\u548c\u8be5\u4e3b\u952e\u5bf9\u5e94\u7684\u9875\u53f7\u7ec4\u6210\uff09<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">next_record<\/h5>\n\n\n\n<p>\u8bb0\u5f55\u5934\u4fe1\u606f\u91cc\u8be5\u5c5e\u6027\u975e\u5e38\u91cd\u8981\uff0c\u5b83\u8868\u793a\u4ece\u5f53\u524d\u8bb0\u5f55\u7684\u771f\u5b9e\u6570\u636e\u5230\u4e0b\u4e00\u6761\u8bb0\u5f55\u7684\u771f\u5b9e\u6570\u636e\u7684<strong>\u5730\u5740\u504f\u79fb\u91cf\u3002<\/strong><br>\u6bd4\u5982\uff1a\u7b2c\u4e00\u6761\u8bb0\u5f55\u7684next_record\u503c\u4e3a32\uff0c\u610f\u5473\u7740\u4ece\u7b2c\u4e00\u6761\u8bb0\u5f55\u7684\u771f\u5b9e\u6570\u636e\u7684\u5730\u5740\u5904\u5411\u540e\u627e32\u4e2a\u5b57\u8282\u4fbf\u662f\u4e0b\u4e00\u6761\u8bb0\u5f55\u7684\u771f\u5b9e\u6570\u636e\u3002<br>\u6ce8\u610f\uff0c\u4e0b\u4e00\u6761\u8bb0\u5f55\u6307\u5f97\u5e76\u4e0d\u662f\u6309\u7167\u6211\u4eec\u63d2\u5165\u987a\u5e8f\u7684\u4e0b\u4e00\u6761\u8bb0\u5f55\uff0c\u800c\u662f\u6309\u7167\u4e3b\u952e\u503c\u7531\u5c0f\u5230\u5927\u7684\u987a\u5e8f\u7684\u4e0b\u4e00\u6761\u8bb0\u5f55\u3002\u800c\u4e14\u89c4\u5b9aInfimum\u8bb0\u5f55\uff08\u4e5f\u5c31\u662f\u6700\u5c0f\u8bb0\u5f55\uff09\u7684\u4e0b\u4e00\u6761\u8bb0\u5f55\u5c31\u662f\u672c\u9875\u4e2d\u4e3b\u952e\u503c\u6700\u5c0f\u7684\u7528\u6237\u8bb0\u5f55\uff0c\u800c\u672c\u9875\u4e2d\u4e3b\u952e\u503c\u6700\u5927\u7684\u7528\u6237\u8bb0\u5f55\u7684\u4e0b\u4e00\u6761\u8bb0\u5f55\u5c31\u662fSupremum\u8bb0\u5f55\uff08\u4e5f\u5c31\u662f\u6700\u5927\u8bb0\u5f55\uff09\u3002\u4e0b\u56fe\u7528\u7bad\u5934\u4ee3\u66ff\u504f\u79fb\u91cf\u8868\u793anext_record\u3002<\/p>\n\n\n\n<h6 class=\"wp-block-heading\">\u5220\u9664\u64cd\u4f5c\u548c\u6dfb\u52a0\u64cd\u4f5c<\/h6>\n\n\n\n<p>\u5220\u9664\u64cd\u4f5c\uff1a<br>\u4ece\u8868\u4e2d\u5220\u9664\u6389\u4e00\u6761\u8bb0\u5f55\uff0c\u8fd9\u4e2a\u94fe\u8868\u4e5f\u662f\u4f1a\u8ddf\u7740\u53d8\u5316\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mysql&gt; DELETE FROM page_demo WHERE c1 = 2;\nQuery OK, 1 row affected (0.02 sec)<\/code><\/pre>\n\n\n\n<p>\u5220\u6389\u7b2c2\u6761\u8bb0\u5f55\u540e\u7684\u793a\u610f\u56fe\u5c31\u662f\uff1a&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"491\" src=\"https:\/\/eve2333.top\/wp-content\/uploads\/2025\/03\/1742624988-image-1024x491.png\" alt=\"\" class=\"wp-image-905\" srcset=\"https:\/\/eve2333.top\/wp-content\/uploads\/2025\/03\/1742624988-image-1024x491.png 1024w, https:\/\/eve2333.top\/wp-content\/uploads\/2025\/03\/1742624988-image-300x144.png 300w, https:\/\/eve2333.top\/wp-content\/uploads\/2025\/03\/1742624988-image-768x368.png 768w, https:\/\/eve2333.top\/wp-content\/uploads\/2025\/03\/1742624988-image-1536x737.png 1536w, https:\/\/eve2333.top\/wp-content\/uploads\/2025\/03\/1742624988-image.png 1824w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u7b2c2\u6761\u8bb0\u5f55\u5e76\u6ca1\u6709\u4ece\u5b58\u50a8\u7a7a\u95f4\u4e2d\u79fb\u9664\uff0c\u800c\u662f\u628a\u8be5\u6761\u8bb0\u5f55\u7684delete_mask\u503c\u8bbe\u7f6e\u4e3a1\u3002&nbsp;\u90a3\u4e48\u7b2c\u4e00\u6761\u8bb0\u5f55\u4e0d\u518d\u6307\u5411\u7b2c\u4e8c\u6761\u8bb0\u5f55\uff0c\u662f\u6307\u5411\u7b2c\u4e09\u6761\u8bb0\u5f55\uff0c\u6240\u4ee5\u7b2c\u4e8c\u6761\u8bb0\u5f55\u7684next\u5c31=0\uff1b<br>\u8fd8\u6709\u5c31\u662f\u6700\u5927\u8bb0\u5f55\u7684n_owned\u539f\u6765\u662f5\uff0c\u73b0\u5728\u5c31\u6539\u62104\u4e86\u3002<\/p>\n\n\n\n<p><strong>&nbsp;\u6240\u4ee5\uff0c\u4e0d\u8bba\u6211\u4eec\u600e\u4e48\u5bf9\u9875\u4e2d\u7684\u8bb0\u5f55\u505a\u589e\u5220\u6539\u64cd\u4f5c\uff0cInnoDB\u59cb\u7ec8\u4f1a\u7ef4\u62a4\u4e00\u6761\u8bb0\u5f55\u7684\u5355\u94fe\u8868\uff0c\u94fe\u8868\u4e2d\u7684\u5404\u4e2a\u8282\u70b9\u662f\u6309\u7167\u4e3b\u952e\u503c\u7531\u5c0f\u5230\u5927\u7684\u987a\u5e8f\u8fde\u63a5\u8d77\u6765\u7684\u3002<\/strong><\/p>\n\n\n\n<p>\u6dfb\u52a0\u64cd\u4f5c\uff1a<br>\u4e3b\u952e\u503c\u4e3a2\u7684\u8bb0\u5f55\u88ab\u6211\u4eec\u5220\u6389\u4e86\uff0c\u4f46\u662f\u5b58\u50a8\u7a7a\u95f4\u5374\u6ca1\u6709\u56de\u6536\uff0c\u5982\u679c\u6211\u4eec\u518d\u6b21\u628a\u8fd9\u6761\u8bb0\u5f55\u63d2\u5165\u5230\u8868\u4e2d\uff0c\u4f1a\u53d1\u751f\u4ec0\u4e48\u4e8b\u5462\uff1f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mysql&gt; INSERT INTO page_demo VALUES(\uff082,200,tong\uff09\nQuery OK,1 row affected (0.00 sec)<\/code><\/pre>\n\n\n\n<p>\u6211\u4eec\u770b\u4e00\u4e0b\u8bb0\u5f55\u7684\u5b58\u50a8\u60c5\u51b5<img loading=\"lazy\" decoding=\"async\" height=\"342\" width=\"679\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/0660b9f656bc43669c9dacde8742f9f1.png\" alt=\"\"><\/p>\n\n\n\n<p>\u7b2c\u4e8c\u6761\u8bb0\u5f55\u7684\u7b2c\u4e00\u4e2a1\u6539\u62100\uff0c\u7b2c\u4e00\u6761\u8bb0\u5f55\u76841\u6307\u54112\u4e86\uff0c2-&gt;3 ,\u4e24\u4e2a\u90fd\u6307\u5411\u4e86\u66f4\u6539 ,\u4f46\u662f5\u4e2a\u4ecd\u7136\u662f\u4e00\u90e8\u5206 .<\/p>\n\n\n\n<p>\u76f4\u63a5\u590d\u7528\u4e86\u539f\u6765\u88ab\u5220\u9664\u8bb0\u5f55\u7684\u5b58\u50a8\u7a7a\u95f4\u3002<br>\u8bf4\u660e\uff1a\u5f53\u6570\u636e\u9875\u4e2d\u5b58\u5728\u6c22\u6761\u88ab\u5220\u9664\u6389\u7684\u8bb0\u5f55\u65f6\uff0c\u8fd9\u4e9b\u8bb0\u5f55\u7684next_record\u5c5e\u6027\u5c06\u4f1a\u628a\u8fd9\u4e9b\u88ab\u5220\u9664\u6389\u7684\u8bb0\u5f55\u7ec4\u6210\u4e00\u4e2a\u5783\u573e\u94fe\u8868\uff0c\u4ee5\u5907\u4e4b\u540e\u91cd\u7528\u8fd9\u90e8\u5206\u5b58\u50a8\u7a7a\u95f4\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">&nbsp;\u7b2c\u4e09\u90e8\u5206<\/h4>\n\n\n\n<h5 class=\"wp-block-heading\">Page Directory\uff08\u9875\u76ee\u5f55\uff09\u4e0d\u597d\u7406\u89e3<\/h5>\n\n\n\n<p>SELECT * FROM page_demo WHERE c1 = 3;<br>\u65b9\u5f0f1\uff1a\u987a\u5e8f\u67e5\u627e<br>\u4eceInfimum\u8bb0\u5f55\uff08\u6700\u5c0f\u8bb0\u5f55\uff09\u5f00\u59cb\uff0c\u6cbf\u7740\u94fe\u8868\u4e00\u76f4\u5f80\u540e\u627e\uff0c\u603b\u6709\u4e00\u5929\u4f1a\u627e\u5230\uff08\u6216\u8005\u627e\u4e0d\u5230\uff09\uff0c\u5728\u627e\u7684\u65f6\u5019\u8fd8\u80fd\u6295\u673a\u53d6\u5de7\uff0c\u56e0\u4e3a\u94fe\u8868\u4e2d\u5404\u4e2a\u8bb0\u5f55\u7684\u503c\u662f\u6309\u7167\u4ece\u5c0f\u5230\u5927\u987a\u5e8f\u6392\u5217\u7684\uff0c\u6240\u4ee5\u5f53\u94fe\u8868\u7684\u67d0\u4e2a\u8282\u70b9\u4ee3\u8868\u7684\u8bb0\u5f55\u7684\u4e3b\u952e\u503c\u5927\u4e8e\u4f60\u60f3\u8981\u67e5\u627e\u7684\u4e3b\u952e\u503c\u65f6\uff0c\u4f60\u5c31\u53ef\u4ee5\u505c\u6b62\u67e5\u627e\u4e86\uff0c\u56e0\u4e3a\u8be5\u8282\u70b9\u540e\u8fb9\u7684\u8282\u70b9\u7684\u4e3b\u952e\u503c\u4f9d\u6b21\u9012\u589e\u3002\u5982\u679c\u4e00\u4e2a\u9875\u4e2d\u5b58\u50a8\u4e86\u975e\u5e38\u591a\u7684\u8bb0\u5f55\uff0c\u8fd9\u4e48\u67e5\u627e\u6027\u80fd\u5f88\u5dee\u3002<\/p>\n\n\n\n<p>\u65b9\u5f0f2\uff1a\u4f7f\u7528\u9875\u76ee\u5f55\uff0c\u4e8c\u5206\u6cd5\u67e5\u627e<\/p>\n\n\n\n<p><a href=\"https:\/\/www.bilibili.com\/video\/BV1iq4y1u7vj?t=68.9&amp;p=124\" target=\"_blank\"  rel=\"nofollow\" >124-\u9875\u7ed3\u6784\u4e4b\u9875\u76ee\u5f55\u4e0e\u9875\u5934_\u54d4\u54e9\u54d4\u54e9_bilibili \u81f3-03.30<\/a><br>1.\u5c06\u6240\u6709\u7684\u8bb0\u5f55\u5206\u6210\u51e0\u4e2a\u7ec4\uff0c\u8fd9\u4e9b\u8bb0\u5f55\u5305\u62ec\u6700\u5c0f\u8bb0\u5f55\u548c\u6700\u5927\u8bb0\u5f55\uff0c\u4f46\u4e0d\u5305\u62ec\u6807\u8bb0\u4e3a\u201c\u5df2\u5220\u9664\u201d\u7684\u8bb0\u5f55\u3002<br>2.\u7b2c1\u7ec4\uff0c\u4e5f\u5c31\u662f\u6700\u5c0f\u8bb0\u5f55\u6240\u5728\u7684\u5206\u7ec4\u53ea\u67091\u4e2a\u8bb0\u5f55\uff1b<br>\u6700\u540e\u4e00\u7ec4\uff0c\u5c31\u662f\u6700\u5927\u8bb0\u5f55\u6240\u5728\u7684\u5206\u7ec4\uff0c\u4f1a\u67091-8\u6761\u8bb0\u5f55\uff1b<br>\u00a0\u5176\u4f59\u7684\u7ec4\u8bb0\u5f55\u6570\u91cf\u5728 4-8\u6761\u4e4b\u95f4\u3002<br>\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\uff0c\u9664\u4e86\u7b2c1\u7ec4\uff08\u6700\u5c0f\u8bb0\u5f55\u6240\u5728\u7ec4\uff09\u4ee5\u5916\uff0c\u5176\u4f59\u7ec4\u7684\u8bb0\u5f55\u6570\u4f1a\u5c3d\u91cf\u5e73\u5206\u3002<br>3.\u5728\u6bcf\u4e2a\u7ec4\u4e2d\u6700\u540e\u4e00\u6761\u8bb0\u5f55\u7684\u5934\u4fe1\u606f\u4e2d\u4f1a\u5b58\u50a8\u8be5\u7ec4\u4e00\u5171\u6709\u591a\u5c11\u6761\u8bb0\u5f55\uff0c\u4f5c\u4e3an_owned\u5b57\u6bb5\u3002<br>4.\u9875\u76ee\u5f55\u7528\u6765\u5b58\u50a8\u6bcf\u7ec4\u6700\u540e\u4e00\u6761\u8bb0\u5f55\u7684\u5730\u5740\u504f\u79fb\u91cf\uff0c\u8fd9\u4e9b\u5730\u5740\u504f\u79fb\u91cf\u4f1a\u6309\u7167\u5148\u540e\u987a\u5e8f\u5b58\u50a8\u8d77\u6765\uff0c\u6bcf\u7ec4\u7684\u5730\u5740\u504f\u79fb\u91cf\u4e5f\u88ab\u79f0\u4e4b\u4e3a\u69fd\uff08slot\uff09\uff0c\u6bcf\u4e2a\u69fd\u76f8\u5f53\u4e8e\u6307\u9488\u6307\u5411\u4e86\u4e0d\u540c\u7ec4\u7684\u6700\u540e\u4e00\u4e2a\u8bb0\u5f55<br><img loading=\"lazy\" decoding=\"async\" height=\"615\" width=\"675\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/405c7a19439a4b47994fa67669348486.png\" alt=\"\"><\/p>\n\n\n\n<p>\u5206\u7ec4\u662f\u4e3a\u4e86\u8282\u7701\u5185\u5b58\u7a7a\u95f4\uff0c\u4e0d\u7528\u4e00\u6b21\u6027\u5c06\u6240\u6709\u6570\u636e\u8bfb\u5230\u5185\u5b58\uff0c\u4f46\u53c8\u80fd\u5b9e\u73b0\u8f83\u5927\u8303\u56f4\u67e5\u627e<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u9875\u76ee\u5f55\u5206\u7ec4\u7684\u4e2a\u6570\u5982\u4f55\u786e\u5b9a\uff1f<\/p>\n\n\n\n<p>\u4e3a\u4ec0\u4e48\u6700\u5c0f\u8bb0\u5f55\u7684n_owned\u503c\u4e3a1\uff0c\u800c\u6700\u5927\u8bb0\u5f55\u7684n_owned\u503c\u4e3a5\u5462\uff1f<br>InnoDB\u89c4\u5b9a\uff1a\u5bf9\u4e8e\u6700\u5c0f\u8bb0\u5f55\u6240\u5728\u7684\u5206\u7ec4\u53ea\u80fd\u67091\u6761\u8bb0\u5f55\uff0c\u6700\u5927\u8bb0\u5f55\u6240\u5728\u7684\u5206\u7ec4\u62e5\u6709\u7684\u8bb0\u5f55\u6761\u6570\u53ea\u80fd\u57281~8\u6761\u4e4b\u95f4\uff0c\u5269\u4e0b\u7684\u5206\u7ec4\u4e2d\u8bb0\u5f55\u7684\u6761\u6570\u8303\u56f4\u53ea\u80fd\u5728\u662f4~8\u6761\u4e4b\u95f4\u3002<\/p>\n\n\n\n<p>\u5206\u7ec4\u662f\u6309\u7167\u4e0b\u8fb9\u7684\u6b65\u9aa4\u8fdb\u884c\u7684\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u521d\u59cb\u60c5\u51b5\u4e0b\u4e00\u4e2a\u6570\u636e\u9875\u91cc\u53ea\u6709\u6700\u5c0f\u8bb0\u5f55\u548c\u6700\u5927\u8bb0\u5f55\u4e24\u6761\u8bb0\u5f55\uff0c\u5b83\u4eec\u5206\u5c5e\u4e8e\u4e24\u4e2a\u5206\u7ec4\u3002<\/li>\n\n\n\n<li>\u4e4b\u540e\u6bcf\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0c\u90fd\u4f1a\u4ece\u9875\u76ee\u5f55\u4e2d\u627e\u5230\u4e3b\u952e\u503c\u6bd4\u672c\u8bb0\u5f55\u7684\u4e3b\u952e\u503c\u5927\u5e76\u4e14\u5dee\u503c\u6700\u5c0f\u7684\u69fd\uff0c\u7136\u540e\u628a\u8be5\u69fd\u5bf9\u5e94\u7684\u8bb0\u5f55\u7684n_owned\u503c\u52a01\uff0c\u8868\u793a\u672c\u7ec4\u5185\u53c8\u6dfb\u52a0\u4e86\u4e00\u6761\u8bb0\u5f55\uff0c\u76f4\u5230\u8be5\u7ec4\u4e2d\u7684\u8bb0\u5f55\u6570\u7b49\u4e8e8\u4e2a\u3002<\/li>\n\n\n\n<li>\u5728\u4e00\u4e2a\u7ec4\u4e2d\u7684\u8bb0\u5f55\u6570\u7b49\u4e8e8\u4e2a\u540e\u518d\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\u65f6\uff0c\u4f1a\u5c06\u7ec4\u4e2d\u7684\u8bb0\u5f55\u62c6\u5206\u6210\u4e24\u4e2a\u7ec4\uff0c\u4e00\u4e2a\u7ec4\u4e2d4\u6761\u8bb0\u5f55\uff0c\u53e6\u4e00\u4e2a5\u6761\u8bb0\u5f55\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u4f1a\u5728\u9875\u76ee\u5f55\u4e2d\u65b0\u589e\u4e00\u4e2a\u69fd\u6765\u8bb0\u5f55\u8fd9\u4e2a\u65b0\u589e\u5206\u7ec4\u4e2d\u6700\u5927\u7684\u90a3\u6761\u8bb0\u5f55\u7684\u504f\u79fb\u91cf\u3002<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>&nbsp;\u9875\u76ee\u5f55\u7ed3\u6784\u4e0b\u5982\u4f55\u5feb\u901f\u67e5\u627e\u8bb0\u5f55\uff1f<\/p>\n\n\n\n<p>\u73b0\u5728\u5411page_demo\u8868\u4e2d\u6dfb\u52a0\u66f4\u591a\u7684\u6570\u636e\u3002\u5982\u4e0b\uff1a<br>INSERT INTO page_demo<br>VALUES<br>(5, 5po, 'zhou'),<br>(6, 600, \u2018chen'),<br>(7, 700, 'deng'),<br>(8, 800, 'yang'),<br>(9, 900, wang'),<br>(10, 1000, (zhao'),<br>(11, 1100,qian'),<br>(12, 1200, \u201cfeng'),<br>(13,1300, \u2018tang'),<br>(14, 1400, ding'),<br>(15, 1500, jing'),<br>(16, 1600, 'quan');<br>\u6dfb\u52a0\u4e8612\u6761\u8bb0\u5f55\uff0c\u73b0\u5728\u9875\u91cc\u4e00\u5171\u670918\u6761\u8bb0\u5f55\u4e86\uff08\u5305\u62ec\u6700\u5c0f\u548c\u6700\u5927\u8bb0\u5f55\uff09\uff0c\u8fd9\u4e9b\u8bb0\u5f55\u88ab\u5206\u6210\u4e865\u4e2a\u7ec4\uff0c\u5982\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" height=\"406\" width=\"643\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/f87681e8c17a4793b83f76b7d1d5add5.png\" alt=\"\"><\/p>\n\n\n\n<p>\u6bcf\u4e2a\u69fd\u90fd\u94fe\u63a5\u5230\u6700\u540e\u4e00\u4e2a\uff08\u5982\u56fe\uff09\u63a5\u4e0b\u6765\u5c31\u662f\u4e00\u4e2a\u4e8c\u5206\u6cd5\u4e86\uff1a\u6bd4\u5982\u73b0\u5728\u8981\u627e\u7684\u8bb0\u5f55\u662f\u5728b+\u6811\u4e2d\uff0c\u5230\u4e86\u53f6\u8282\u70b9\u548c\u69fd\u94fe\u63a5\uff0c\u5047\u8bbe\u4ece\u69fd0-\u69fd100\u3002<\/p>\n\n\n\n<p>\u5b9e\u9645\u4e0a\u8fc7\u7a0b\u5c31\u662f\u9996\u5148\u4ece\u6839\u76ee\u5f55\u4ece\u4e0a\u5230\u4e0b\u67e5\u627e\u5230\u6570\u636e\u8bf4\u5904\u7684\u9875\uff1b\u7136\u540e\u6570\u636e\u9875\u6839\u636e\u4e8c\u5206\u67e5\u627e\u67e5\u627e\u8be5\u6570\u636e\u5728\u54ea\u4e24\u4e2a\u63d2\u69fd\u4e4b\u95f4\uff0c\u4ece\u800c\u786e\u5b9a\u8be5\u6570\u636e\u5904\u4e8e\u9875\u76ee\u5f55\u5206\u7ec4\u540e\u7684\u54ea\u4e00\u4e2a\u7ec4\uff1b\u7136\u540e\u7ec4\u5185\u94fe\u8868\u67e5\u627e\u5230\u76ee\u6807\u6570\u636e\u5373\u53ef\uff08\u4e00\u4e2a\u7ec44-5\u4e2a\u8bb0\u5f55\uff09\u3002\u7406\u89e3\u4e3a\uff1a\u69fd\u4f4d\u5c31\u662f\u4f7f\u5f97\u5355\u94fe\u8868\u5177\u6709\u987a\u5e8f\u6570\u7ec4\u7684\u6027\u8d28\u4e86<\/p>\n<\/blockquote>\n\n\n\n<h5 class=\"wp-block-heading\">Page Header\uff08\u9875\u9762\u5934\u90e8\uff09<\/h5>\n\n\n\n<p>\u4e3a\u4e86\u80fd\u5f97\u5230\u4e00\u4e2a\u6570\u636e\u9875\u4e2d\u5b58\u50a8\u7684\u8bb0\u5f55\u7684\u72b6\u6001\u4fe1\u606f\uff0c\u6bd4\u5982\u672c\u9875\u4e2d\u5df2\u7ecf\u5b58\u50a8\u4e86\u591a\u5c11\u6761\u8bb0\u5f55\uff0c\u7b2c1\u6761\u8bb0\u5f55\u7684\u5730\u5740\u662f\u4ec0\u4e48\uff0c\u9875\u76ee\u5f55\u4e2d\u5b58\u50a8\u4e86\u591a\u5c11\u4e2a\u69fd\u7b49\u7b49\uff0c\u7279\u610f\u5728\u9875\u4e2d\u5b9a\u4e49\u4e86\u4e00\u4e2a\u53ebPageHeader\u7684\u90e8\u5206\uff0c\u8fd9\u4e2a\u90e8\u5206\u5360\u7528\u56fa\u5b9a\u768456\u4e2a\u5b57\u8282\uff0c\u4e13\u95e8\u5b58\u50a8\u5404\u79cd\u72b6\u6001\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>PAGE_N_DIRECTION\uff1a\u5047\u8bbe\u8fde\u7eed\u51e0\u6b21\u63d2\u5165\u65b0\u8bb0\u5f55\u7684\u65b9\u5411\u90fd\u662f\u4e00\u81f4\u7684\uff0cInnoDB\u4f1a\u628a\u6cbf\u7740\u540c\u4e00\u4e2a\u65b9\u5411\u63d2\u5165\u8bb0\u5f55\u7684\u6761\u6570\u8bb0\u4e0b\u6765\uff0c\u8fd9\u4e2a\u6761\u6570\u5c31\u7528PAGE_N_DIRECTION\u8fd9\u4e2a\u72b6\u6001\u8868\u793a\u3002\u5f53\u7136\uff0c\u5982\u679c\u6700\u540e\u4e00\u6761\u8bb0\u5f55\u7684\u63d2\u5165\u65b9\u5411\u6539\u53d8\u4e86\u7684\u8bdd\uff0c\u8fd9\u4e2a\u72b6\u6001\u7684\u503c\u4f1a\u88ab\u6e05\u96f6\u91cd\u65b0\u7edf\u8ba1\u3002<\/p>\n\n\n\n<p>1. .\u666e\u901a\u7d22\u5f15\u548c\u552f\u4e00\u7d22\u5f15\u5728\u67e5\u8be2\u6548\u7387\u4e0a\u6709\u4ec0\u4e48\u4e0d\u540c\uff1f<br>\u6211\u4eec\u521b\u5efa\u7d22\u5f15\u7684\u65f6\u5019\u53ef\u4ee5\u662f\u666e\u901a\u7d22\u5f15\uff0c\u4e5f\u53ef\u4ee5\u662f\u552f\u4e00\u7d22\u5f15\uff0c\u90a3\u4e48\u8fd9\u4e24\u4e2a\u7d22\u5f15\u5728\u67e5\u8be2\u6548\u7387\u4e0a\u6709\u4ec0\u4e48\u4e0d\u540c\u5462\uff1f<br>\u552f\u4e00\u7d22\u5f15\u5c31\u662f\u5728\u666e\u901a\u7d22\u5f15\u4e0a\u589e\u52a0\u4e86\u7ea6\u675f\u6027\uff0c\u4e5f\u5c31\u662f\u5173\u952e\u5b57\u552f\u4e00\uff0c\u627e\u5230\u4e86\u5173\u952e\u5b57\u5c31\u505c\u6b62\u68c0\u7d22\u3002\u800c\u666e\u901a\u7d22\u5f15\uff0c\u53ef\u80fd\u4f1a\u5b58\u5728\u7528\u6237\u8bb0\u5f55\u4e2d\u7684\u5173\u952e\u5b57\u76f8\u540c\u7684\u60c5\u51b5\uff0c\u6839\u636e\u9875\u7ed3\u6784\u7684\u539f\u7406\uff0c\u5f53\u6211\u4eec\u8bfb\u53d6\u4e00\u6761\u8bb0\u5f55\u7684\u65f6\u5019\uff0c\u4e0d\u662f\u5355\u72ec\u5c06\u8fd9\u6761\u8bb0\u5f55\u4ece\u78c1\u76d8\u4e2d\u8bfb\u51fa\u53bb\uff0c\u800c\u662f\u5c06\u8fd9\u4e2a\u8bb0\u5f55\u6240\u5728\u7684\u9875\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\u8fdb\u884c\u8bfb\u53d6\u3002InnoDB\u5b58\u50a8\u5f15\u64ce\u7684\u9875\u5927\u5c0f\u4e3a16KB\uff0c\u5728\u4e00\u4e2a\u9875\u4e2d\u53ef\u80fd\u5b58\u50a8\u7740\u4e0a\u5e72\u4e2a\u8bb0\u5f55\uff0c\u56e0\u6b64\u5728\u666e\u901a\u7d22\u5f15\u7684\u5b57\u6bb5\u4e0a\u8fdb\u884c\u67e5\u627e\u4e5f\u5c31\u662f\u5728\u5185\u5b58\u4e2d\u591a\u51e0\u6b21\u201c\u5224\u65ad\u4e0b\u4e00\u6761\u8bb0\u5f55\"\u7684\u64cd\u4f5c\uff0c\u5bf9\u4e8eCPU\u6765\u8bf4\uff0c\u8fd9\u4e9b\u64cd\u4f5c\u6240\u6d88\u8017\u7684\u65f6\u95f4\u662f\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u7684\u3002\u6240\u4ee5\u5bf9\u4e00\u4e2a\u7d22\u5f15\u5b57\u6bb5\u8fdb\u884c\u68c0\u7d22\uff0c\u91c7\u7528\u666e\u901a\u7d22\u5f15\u8fd8\u662f\u552f\u4e00\u7d22\u5f15\u5728\u68c0\u7d22\u6548\u7387\u4e0a\u57fa\u672c\u4e0a\u6ca1\u6709\u5dee\u522b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u67e5\u770bMySQL8\u7684\u9ed8\u8ba4\u884c\u683c\u5f0f\uff1a\n\nmysql&gt; SELECT @@innodb_default_row_format;\n\n@@innodb_default_row_format \ndynamic\n1 row in set (0.00 sec)<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u6307\u5b9a\u884c\u683c\u5f0f\u7684\u8bed\u6cd5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5728\u521b\u5efa\u6216\u4fee\u6539\u8868\u7684\u8bed\u53e5\u4e2d\u6307\u5b9a\u884c\u683c\u5f0f\uff1a\nCREATE TABLE\u8868\u540d(\u5217\u7684\u4fe1\u606f)ROW_FORMAT=\u884c\u683c\u5f0f\u540d\u79f0\nALTER TABLE\u8868\u540dROW_FORMAT=\u884c\u683c\u5f0f\u540d\u79f0\n\n\n\u4e3e\u4f8b\uff1a\nmysql&gt; CREATE TABLE record_test_table (\n       col1 VARCHAR(8),\n       col2 VARCHAR(8) NOT NULL,\n       col3 CHAR(8),\n       col4 VARCHAR(8)\n-&gt;)CHARSET=asciiROW_FORMAT=COMPACT;\nQuery OK,0 rows affected (0.03 sec)\n\n\n\u5411\u8868\u4e2d\u63d2\u5165\u4e24\u6761\u8bb0\u5f55\uff1a\nINSERT INTO record_test_table(col1,col2,col3,col4)\nVALUES\n('zhangsan','lisi','wangwu','songhk'),\n('tong', 'chen', NULL, NULL);<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">COMPACT\u884c\u683c\u5f0f<\/h3>\n\n\n\n<p>\u5728MySQL5.1\u7248\u672c\u4e2d\uff0c\u9ed8\u8ba4\u8bbe\u7f6e\u4e3aCompact\u884c\u683c\u5f0f\u3002\u4e00\u6761\u5b8c\u6574\u7684\u8bb0\u5f55\u5176\u5b9e\u53ef\u4ee5\u88ab\u5206\u4e3a\u8bb0\u5f55\u7684\u989d\u5916\u4fe1\u606f\u548c\u8bb0\u5f55\u7684\u771f\u5b9e\u6570\u636e\u4e24\u5927\u90e8\u5206\u3002<img loading=\"lazy\" decoding=\"async\" height=\"282\" width=\"679\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/541b5543c6bd4d9c817ee87afdc41eca.png\" alt=\"\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">&nbsp;\u53d8\u957f\u5b57\u6bb5\u957f\u5ea6\u5217\u8868<\/h4>\n\n\n\n<p>MySQL\u652f\u6301\u4e00\u4e9b\u53d8\u957f\u7684\u6570\u636e\u7c7b\u578b\uff0c\u6bd4\u5982VARCHAR(M)\u3001VARBINARY(M)\u3001TEXT\u7c7b\u578b\uff0cBLOB\u7c7b\u578b\uff0c\u8fd9\u4e9b\u6570\u636e\u7c7b\u578b\u4fee\u9970\u5217\u79f0\u4e3a\u53d8\u957f\u5b57\u6bb5\uff0c\u53d8\u957f\u5b57\u6bb5\u4e2d\u5b58\u50a8\u591a\u5c11\u5b57\u8282\u7684\u6570\u636e\u4e0d\u662f\u56fa\u5b9a\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u5728\u5b58\u50a8\u771f\u5b9e\u6570\u636e\u7684\u65f6\u5019\u9700\u8981\u987a\u4fbf\u628a\u8fd9\u4e9b\u6570\u636e\u5360\u7528\u7684\u5b57\u8282\u6570\u4e5f\u5b58\u8d77\u6765\u3002\u5728Compact\u884c\u683c\u5f0f\u4e2d\uff0c\u628a\u6240\u6709\u53d8\u957f\u5b57\u6bb5\u7684\u771f\u5b9e\u6570\u636e\u5360\u7528\u7684\u5b57\u8282\u957f\u5ea6\u90fd\u5b58\u653e\u5728\u8bb0\u5f55\u7684\u5f00\u5934\u90e8\u4f4d\u4ece\u800c\u5f62\u6210\u4e00\u4e2a\u53d8\u957f\u5b57\u6bb5\u957f\u5ea6\u5217\u8868\u3002<\/p>\n\n\n\n<p>\u53ef\u4ee5\u95eevarchar\u548cchar\u7684\u533a\u522b:<\/p>\n\n\n\n<p>\u6ce8\u610f\uff1a\u8fd9\u91cc\u9762\u5b58\u50a8\u7684\u53d8\u957f\u957f\u5ea6\u548c\u5b57\u6bb5\u987a\u5e8f\u662f\u53cd\u8fc7\u6765\u7684\u3002\u6bd4\u5982\u4e24\u4e2avarchar\u5b57\u6bb5\u5728\u8868\u7ed3\u6784\u7684\u987a\u5e8f\u662fa\uff0810)\uff0cb(15)\u3002\u90a3\u4e48\u5728\u53d8\u957f\u5b57\u6bb5\u957f\u5ea6\u5217\u8868\u4e2d\u5b58\u50a8\u7684\u957f\u5ea6\u987a\u5e8f\u5c31\u662f15\uff0c10\uff0c\u662f\u53cd\u8fc7\u6765\u7684\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0a\u9762record_test_table\u8868\u4e2d\u7684\u7b2c\u4e00\u6761\u8bb0\u5f55\u4e3e\u4f8b\uff1a\u56e0\u4e3arecord_test_table\u8868\u7684col1\u3001col2\u3001Col4\u5217\u90fd\u662fVARCHAR\uff088)\u7c7b\u578b\u7684\uff0c\u6240\u4ee5\u8fd9\u4e09\u4e2a\u5217\u7684\u503c\u7684\u957f\u5ea6\u90fd\u9700\u8981\u4fdd\u5b58\u5728\u8bb0\u5f55\u5f00\u5934\u5904\uff0c\u6ce8record_test_table\u8868\u4e2d\u7684\u5404\u4e2a\u5217\u90fd\u4f7f\u7528\u7684\u662fascii\u5b57\u7b26\u96c6\uff08\u6bcf\u4e2a\u5b57\u7b26\u53ea\u9700\u89811\u4e2a\u5b57\u8282\u6765\u8fdb\u884c\u7f16\u7801\uff09\u3002<img loading=\"lazy\" decoding=\"async\" height=\"311\" width=\"613\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/7b2091b19a0b4073865ec05625103548.png\" alt=\"\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">&nbsp;NULL\u503c\u5217\u8868<\/h4>\n\n\n\n<p>Compact\u884c\u683c\u5f0f\u4f1a\u628a\u53ef\u4ee5\u4e3aNULL\u7684\u5217\u7edf\u4e00\u7ba1\u7406\u8d77\u6765\uff0c\u5b58\u5728\u4e00\u4e2a\u6807\u8bb0\u4e3aNULL\u503c\u5217\u8868\u4e2d\u3002<br>\u5982\u679c\u8868\u4e2d\u6ca1\u6709\u5141\u8bb8\u5b58\u50a8NULL\u7684\u5217\uff0c\u5219NULL\u503c\u5217\u8868\u4e5f\u4e0d\u5b58\u5728\u4e86\u3002<\/p>\n\n\n\n<p>&nbsp;\u4e3a\u4ec0\u4e48\u5b9a\u4e49NULL\u503c\u5217\u8868\uff1f<\/p>\n\n\n\n<p>\u6bd4\u5982\u73b0\u5728\u67094\u4e2a\u5b57\u6bb5\uff0c\u7b2c2-3\u4e2a\u662fnull\uff0c\u7b2c\u4e00\u4e2a\u5b57\u6bb5\u662fa\uff0c\u7b2c\u56db\u4e2a\u5b57\u6bb5\u662fb<br>\u4e4b\u6240\u4ee5\u8981\u5b58\u50a8NULL\u662f\u56e0\u4e3a\u6570\u636e\u90fd\u662f\u9700\u8981\u5bf9\u9f50\u7684\uff0c\u5982\u679c\u6ca1\u6709\u6807\u6ce8\u51fa\u6765NULL\u503c\u7684\u4f4d\u7f6e\uff0c\u5c31\u6709\u53ef\u80fd\u5728\u67e5\u8be2\u6570\u636e\u7684\u65f6\u5019\u51fa\u73b0\u6df7\u4e71\u3002\u5982\u679c\u4f7f\u7528\u4e00\u4e2a\u7279\u5b9a\u7684\u7b26\u53f7\u653e\u5230\u76f8\u5e94\u7684\u6570\u636e\u4f4d\u8868\u793a\u7a7a\u7f6e\u7684\u8bdd\uff0c\u867d\u7136\u80fd\u8fbe\u5230\u6548\u679c\uff0c\u4f46\u662f\u8fd9\u6837\u5f88\u6d6a\u8d39\u7a7a\u95f4\u6240\u4ee5\u76f4\u63a5\u5c31\u5728\u884c\u6570\u636e\u5f97\u5934\u90e8\u5f00\u8f9f\u51fa\u4e00\u5757\u7a7a\u95f4\uff0c\u4e13\u95e8\u7528\u6765\u8bb0\u5f55\u8be5\u884c\u6570\u636e\u54ea\u4e9b\u662f\u975e\u7a7a\u6570\u636e\uff0c\u54ea\u4e9b\u662f\u7a7a\u6570\u636e\uff0cbit\u683c\u5f0f\u5982\u4e0b\uff1a<br>1.\u4e8c\u8fdb\u5236\u4f4d\u7684\u503c\u4e3a1\u65f6\uff0c\u4ee3\u8868\u8be5\u5217\u7684\u503c\u4e3aNULL<br>2.\u4e8c\u8fdb\u5236\u4f4d\u7684\u503c\u4e3a0\u65f6\uff0c\u4ee3\u8868\u8be5\u5217\u7684\u503c\u4e0d\u4e3aNULL<\/p>\n\n\n\n<p>('tong',chen',NULL,NULL);\u5c31\u8868\u793a\u62100 0 1 1\uff0c\u5012\u53d9\u4e00\u4e0b\u662f1100<img loading=\"lazy\" decoding=\"async\" height=\"304\" width=\"508\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/2a8ea5c3ca6845d5ba66a3ebcec131d0.png\" alt=\"\"><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>&nbsp;\u4f8b\u5982\uff1a\u5b57\u6bb5a\u3001b\u3001c\uff0c\u5176\u4e2da\u662f\u4e3b\u952e\uff0c\u5728\u67d0\u4e00\u884c\u4e2d\u5b58\u50a8\u7684\u6570\u4f9d\u6b21\u662fa=1\u3001b=null\u3001c=2\u3002\u90a3\u4e48Compact\u884c\u683c\u5f0f\u4e2d\u7684NULL\u503c\u5217\u8868\u4e2d\u5b58\u50a8\uff1a01\u3002\u7b2c\u4e00\u4e2a0\u8868\u793ac\u4e0d\u4e3anull\uff0c\u7b2c\u4e8c\u4e2a1\u8868\u793ab\u662fnull\u3002<strong>\u8fd9\u91cc\u4e4b\u6240\u4ee5\u6ca1\u6709a\u662f\u56e0\u4e3a\u6570\u636e\u5e93\u4f1a\u81ea\u52a8\u8df3\u8fc7\u4e3b\u952e<\/strong>\uff0c\u56e0\u4e3a\u4e3b\u952e\u80af\u5b9a\u662f\u975eNULL\u4e14\u552f\u4e00\u7684\uff0c\u5728NULL\u503c\u5217\u8868\u7684\u6570\u636e\u4e2d\u5c31\u4f1a<strong>\u81ea\u52a8\u8df3\u8fc7\u4e3b\u952e\u3002<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p>&nbsp;\u5047\u8bbe\u6709\u56db\u4e2a\u5b57\u6bb5\uff0c0000\u4e8c\u8fdb\u5236\uff0c\u6700\u5de6\u7aef\u7684\u624d\u662f1\uff0c\u6240\u4ee5\u662f\u5012\u5e8f\u7684<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8bb0\u5f55\u5934\u4fe1\u606f&nbsp;<\/h4>\n\n\n\n<p>\u4e0a\u9762\u5df2\u7ecf\u8bf4\u8fc7\u4e86\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8bb0\u5f55\u7684\u771f\u5b9e\u6570\u636e<\/h4>\n\n\n\n<p>\u8bb0\u5f55\u7684\u771f\u5b9e\u6570\u636e\u9664\u4e86\u6211\u4eec\u81ea\u5df1\u5b9a\u4e49\u7684\u5217\u7684\u6570\u636e\u4ee5\u5916\uff0c\u8fd8\u4f1a\u6709\u4e09\u4e2a\u9690\u85cf\u5217\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\u5217\u540d<\/td><td>\u662f\u5426\u5fc5\u987b<\/td><td>\u5360\u7528\u7a7a\u95f4<\/td><td>\u63cf\u8ff0<\/td><\/tr><tr><td>row_id<\/td><td>\u5426<\/td><td>6\u5b57\u8282<\/td><td>\u884cID\uff0c\u552f\u4e00\u6807\u8bc6\u4e00\u6761\u8bb0\u5f55<\/td><\/tr><tr><td>transaction_id<\/td><td>\u662f<\/td><td>6\u5b57\u8282<\/td><td>\u4e8b\u52a1ID<\/td><\/tr><tr><td>rol_poiner<\/td><td>\u662f<\/td><td>7\u5b57\u8282<\/td><td>\u56de\u6eda\u6307\u9488<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>innodb\u6709\u7d22\u5f15\uff0c\u7d22\u5f15\u5373\u6570\u636e\uff0c\u6570\u636e\u5373\u7d22\u5f15\uff1a1\u4e2a\u8868\u6ca1\u6709\u624b\u52a8\u5b9a\u4e49\u4e3b\u952e\uff0c\u5219\u4f1a\u9009\u53d6\u4e00\u4e2aUnique\u952e\u4f5c\u4e3a\u4e3b\u952e\uff0c\u5982\u679c\u8fdeUnique\u952e\u90fd\u6ca1\u6709\u5b9a\u4e49\u7684\u8bdd\uff0c\u5219\u4f1a\u4e3a\u8868\u9ed8\u8ba4\u6dfb\u52a0\u4e00\u4e2a\u540d\u4e3arowid\u7684\u9690\u85cf\u5217\u4f5c\u4e3a\u4e3b\u952e\u3002\u6240\u4ee5row_id\u662f\u5728\u6ca1\u6709\u81ea\u5b9a\u4e49\u4e3b\u952e\u4ee5\u53caUnigue\u952e\u7684\u60c5\u51b5\u4e0b\u624d\u4f1a\u5b58\u5728\u7684\u3002<br><br>\u884c\u683c\u5f0f\u90fd\u8bf4\u5b8c\u4e86\uff0c\u90a3\u4e48\u4e3e\u4f8b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE mytest(\ncol1 VARCHAR(10),\ncol2 VARCHAR(10),\ncol3 CHAR(10),\ncol4 VARCHAR(10)\n)ENGINE=INNODBCHARSET=LATIN1ROW_FORMAT=COMPACT;\n\n\nINSERT INTO mytest\nVALUES\uff08'a','bb','bb','ccc');\n\nINSERT INTO mytest\nVALUES('d','ee','ee','ff');\n\nINSERT INTO mytest\nVALUES('d',NULL,NULL,'ff');<\/code><\/pre>\n\n\n\n<p><a href=\"https:\/\/www.bilibili.com\/video\/BV1iq4y1u7vj?t=1343.3&amp;p=125\" target=\"_blank\"  rel=\"nofollow\" >125-\u8bbe\u7f6e\u884c\u683c\u5f0f\u4e0eibd\u6587\u4ef6\u5256\u6790Compact\u884c\u683c\u5f0f_\u54d4\u54e9\u54d4\u54e9_bilibili<\/a>\u8be6\u7ec6\u6210\u6e23\u4e86\uff0c\u771f\u7684\u662f\u7ec6\u7684\u8981\u547d<\/p>\n\n\n\n<p>\u00a0<img loading=\"lazy\" decoding=\"async\" height=\"291\" width=\"677\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/34df87f536b34256960450e7c97bd32d.png\" alt=\"\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">&nbsp;Dynamic\u548cCompresred\u884c\u683c\u5f0f\u4e0eRedundant\u884c\u683c\u5f0f<\/h3>\n\n\n\n<p>\u5176\u5b9e\u548ccompact\u5dee\u4e0d\u591a\u5927\uff0c\u6bd4\u5982\u6211\u4eec<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TRBLE varchar_size_demo(\n    c VARCHAR (65335)\n) CHARSET =ASCII ROW_FORMAT=COMPACT<\/code><\/pre>\n\n\n\n<p>\u8bbe\u5b9avarchar\u6700\u957f\u5b57\u7b26 \u91c7\u7528ASCII\u7801\u3002\u5f53\u4e0d\u5199ASCII\u7801\u65f6\uff0c\u5219\u9ed8\u8ba4utf8\uff0c\u4e09\u5b57\u8282\u4e00\u5b57\u7b26\u4e3a25545\u6700\u957f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u4f46\u662f\u53ea\u6709\u5982\u4e0b\u624d\u80fd \u6b63\u5e38\u8fd0\u884c\n\nCREATE TRBLE varchar_size_demo(\n    c VARCHAR (65332)\n) CHARSET =ASCII ROW_FORMAT=COMPACT<\/code><\/pre>\n\n\n\n<p>\u8fd9\u662f\u56e0\u4e3a65533+2\u5b57\u8282\u7684\u53d8\u957f\u5b57\u6bb5\u957f\u5ea6+1\u4e2aNULL\u503c\u6807\u5fd7<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#\u5982\u679c\u6709not null\u5c5e\u6027\uff0c\u90a3\u4e48\u5c31\u4e0d\u9700\u8981NULL\u503c\u6807\u8bc6\uff0c\u4e5f\u5c31\u53ef\u4ee5\u591a\u5b58\u50a8\u4e00\u4e2a\u5b57\u8282\uff0c\u5373\n\u8fd9\u4e2a\u4e5f\u662fok\u7684\nCREATE TABLE varchar_size_demol(\n    c VARCHAR (65533)NOT NULL  #65533+2\u4e2a\u5b57\u8282\u7684\u53d8\u957f\u5b57\u6bb5\u7684\u957f\u5ea6\n)CHARSET=ASCII ROW FORMAT=COMPACT;<\/code><\/pre>\n\n\n\n<p>\u901a\u8fc7\u4e0a\u9762\u7684\u6848\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u77e5\u9053\u4e00\u4e2a\u9875\u7684\u5927\u5c0f\u4e00\u822c\u662f16KB\uff0c\u4e5f\u5c31\u662f16384\u5b9d\u8282\uff0c\u800c\u4e00\u4e2aVARCHAR\uff08M)\u7c7b\u578b\u7684\u5217\u5c31\u6700\u591a\u53ef\u4ee5\u5b58\u50a865533\u4e2a\u5b57\u8282\uff0c\u8fd9\u6837\u5c31\u53ef\u80fd\u51fa\u73b0\u4e00\u4e2a\u9875\u5b58\u653e\u4e0d\u4e86\u4e00\u6761\u8bb0\u5f55\uff0c\u8fd9\u79cd\u73b0\u8c61\u79f0\u4e3a\u884c\u6ea2\u51fa\u3002<br>\u5728Compact\u548cReduntant\u884c\u683c\u5f0f\u4e2d\uff0c\u5bf9\u4e8e\u5360\u7528\u5b58\u50a8\u7a7a\u95f4\u975e\u5e38\u5927\u7684\u5217\uff0c\u5728\u8bb0\u5f55\u7684\u771f\u5b9e\u6570\u636e\u5904\u53ea\u4f1a\u5b58\u50a8\u8be5\u5217\u7684\u4e00\u90e8\u5206\u6570\u636e\uff0c\u628a\u5269\u4f59\u7684\u6570\u636e\u5206\u6563\u5b58\u50a8\u5728\u51e0\u4e2a\u5176\u4ed6\u7684\u9875\u4e2d\u8fdb\u884c\u5206\u9875\u5b58\u50a8\uff0c\u7136\u540e\u8bb0\u5f55\u7684\u771f\u5b9e\u6570\u636e\u5904\u752820\u4e2a\u5b57\u8282\u5b58\u50a8\u6307\u5411\u8fd9\u4e9b\u9875\u7684\u5730\u5740\uff08\u5f53\u7136\u8fd920\u4e2a\u5b57\u8282\u4e2d\u8fd8\u5305\u62ec\u8fd9\u4e9b\u5206\u6563\u5728\u5176\u4ed6\u9875\u9762\u4e2d\u7684\u6570\u636e\u7684\u5360\u7528\u7684\u5b57\u8282\u6570\uff09\uff0c\u4ece\u800c\u53ef\u4ee5\u627e\u5230\u5269\u4f59\u6570\u636e\u6240\u5728\u7684\u9875\u3002\u8fd9\u79f0\u4e3a\u9875\u7684\u6269\u5c55\uff0c\u4e3e\u4f8b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" height=\"320\" width=\"673\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/070ac925b2c0468eab15c1a51fc9ee55.png\" alt=\"\"><\/p>\n\n\n\n<p>\u5728MySQL8.o\u4e2d\uff0c\u9ed8\u8ba4\u884c\u683c\u5f0f\u5c31\u662fDynamic\uff0cDynamic\u3001Compressed\u884c\u683c\u5f0f\u548cCompact\u884c\u683c\u5f0f\u633a\u50cf\uff0c\u53ea\u4e0d\u8fc7\u5728\u5904\u7406\u884c\u6ea2\u51fa\u6570\u636e\u65f6\u6709\u5206\u6b67\uff1a<br>Compressed\u548cDynamic\u4e24\u79cd\u8bb0\u5f55\u683c\u5f0f\u5bf9\u4e8e\u5b58\u653e\u5728BLOB\u4e2d\u7684\u6570\u636e\u91c7\u7528\u4e86\u5b8c\u5168\u7684\u884c\u6ea2\u51fa\u7684\u65b9\u5f0f\u3002\u5982\u56fe\uff0c\u5728\u6570\u636e\u9875\u4e2d\u53ea\u5b58\u653e20\u4e2a\u5b57\u8282\u7684\u6307\u9488\uff08\u6ea2\u51fa\u9875\u7684\u5730\u5740\uff09\uff0c\u5b9e\u9645\u7684\u6570\u636e\u90fd\u5b58\u653e\u5728OffPage\uff08\u6ea2\u51fa\u9875\uff09\u4e2d\u3002<br>Compact\u548cRedundant\u4e24\u79cd\u683c\u5f0f\u4f1a\u5728\u8bb0\u5f55\u7684\u771f\u5b9e\u6570\u636e\u5904\u5b58\u50a8\u4e00\u90e8\u5206\u6570\u636e\uff08\u5b58\u653e768\u4e2a\u524d\u7f00\u5b57\u8282\uff09\u3002<br>Compressed\u884c\u8bb0\u5f55\u683c\u5f0f\u7684\u53e6\u4e00\u4e2a\u529f\u80fd\u5c31\u662f\uff0c\u5b58\u50a8\u5728\u5176\u4e2d\u7684\u884c\u6570\u636e\u4f1a\u4ee5zlib\u7684\u7b97\u6cd5\u8fdb\u884c\u538b\u7f29\uff0c\u56e0\u6b64\u5bf9\u4e8eBLOB\u3001TEXT\u3001VARCHAR\u8fd9\u7c7b\u5927\u957f\u5ea6\u7c7b\u578b\u7684\u6570\u636e\u80fd\u591f\u8fdb\u884c\u975e\u5e38\u6709\u6548\u7684\u5b58\u50a8\u00a0<img loading=\"lazy\" decoding=\"async\" height=\"155\" width=\"599\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/9891ebc66b5d47dba6ac2afb6a39c6bc.png\" alt=\"\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Redundant\uff08\u5197\u4f59\u7684\uff09\u884c\u683c\u5f0f<\/h3>\n\n\n\n<p>Redundant\u662fMySQL5.0\u7248\u672c\u4e4b\u524dInnoDB\u7684\u884c\u8bb0\u5f55\u5b58\u50a8\u65b9\u5f0f\uff0cMySQL5.0\u652f\u6301Redundant\u662f\u4e3a\u4e86\u517c\u5bb9\u4e4b\u524d\u7248\u672c\u7684\u9875\u683c\u5f0f\u3002&nbsp;<\/p>\n\n\n\n<p><strong>\u8fc7\u671f\u529b\uff0c\u770b\u770b\u5f97\u4e86<\/strong><\/p>\n\n\n\n<p>&nbsp;\u5b57\u6bb5\u957f\u5ea6\u504f\u79fb\u5217\u8868<\/p>\n\n\n\n<p>\u6ce8\u610fCompact\u884c\u683c\u5f0f\u7684\u5f00\u5934\u662f\u53d8\u957f\u5b57\u6bb5\u957f\u5ea6\u5217\u8868\uff0c\u800cRedundant\u884c\u683c\u5f0f\u7684\u5f00\u5934\u662f\u5b57\u6bb5\u957f\u5ea6\u504f\u79fb\u5217\u8868\uff0c\u4e0e\u53d8\u957f\u5b57\u6bb5\u957f\u5ea6\u5217\u8868\u6709\u4e24\u5904\u4e0d\u540c\uff1a<br>1.\u5c11\u4e86\u201c\u53d8\u957f\u201d\u4e24\u4e2a\u5b57\uff1aRedundant\u884c\u683c\u5f0f\u4f1a\u628a\u8be5\u6761\u8bb0\u5f55\u4e2d\u6240\u6709\u5217\uff08\u5305\u62ec\u9690\u85cf\u5217\uff09\u7684\u957f\u5ea6\u4fe1\u606f\u90fd\u6309\u7167\u9006\u5e8f\u5b58\u50a8\u5230\u5b57\u6bb5\u957f\u5ea6\u504f\u79fb\u5217\u8868\u3002<br>2.\u591a\u4e86\u201c\u504f\u79fb\u4e24\u4e2a\u5b57\uff1a\u8fd9\u610f\u5473\u7740\u8ba1\u7b97\u5217\u503c\u957f\u5ea6\u7684\u65b9\u5f0f\u4e0d\u50cfCompact\u884c\u683c\u5f0f\u90a3\u4e48\u76f4\u89c2\uff0c\u5b83\u662f\u91c7\u7528\u4e24\u4e2a\u76f8\u90bb\u6570\u503c\u7684\u5dee\u503c\u6765\u8ba1\u7b97\u5404\u4e2a\u5217\u503c\u7684\u957f\u5ea6\u3002<\/p>\n\n\n\n<p>\u4e3e\u4f8b\uff1a\u6bd4\u5982\u7b2c\u4e00\u6761\u8bb0\u5f55\u7684\u5b57\u6bb5\u957f\u5ea6\u504f\u79fb\u5217\u8868\u5c31\u662f\uff1a<br>2B251F1B130C06<br>\u56e0\u4e3a\u5b83\u662f\u9006\u5e8f\u6392\u653e\u7684\uff0c\u6240\u4ee5\u6309\u7167\u5217\u7684\u987a\u5e8f\u6392\u5217\u5c31\u662f\uff1a<br>060C 13171A2425<br>\u6309\u7167\u4e24\u4e2a\u76f8\u90bb\u6570\u503c\u7684\u5dee\u503c\u6765\u8ba1\u7b97\u5404\u4e2a\u5217\u503c\u7684\u957f\u5ea6\u7684\u610f\u601d\u5c31\u662f\uff1a<br>\u7b2c\u4e00\u5217(row_id)\u7684\u957f\u5ea6\u5c31\u662f0x06\u4e2a\u5b57\u8282\uff0c\u4e5f\u5c31\u662f6\u4e2a\u5b57\u8282\u3002<br>\u7b2c\u4e8c\u5217(transaction_id)\u7684\u957f\u5ea6\u5c31\u662f\uff08Ox0C\uff0d0x06)\u4e2a\u5b57\u8282\uff0c\u4e5f\u5c31\u662f6\u4e2a\u5b57\u8282\u3002<br>\u7b2c\u4e09\u5217\uff08roll_pointer)\u7684\u957f\u5ea6\u5c31\u662f\uff080x13\uff0d0x0C)\u4e2a\u5b57\u8282\uff0c\u4e5f\u5c31\u662f7\u4e2a\u5b57\u8282\u3002<br>\u7b2c\u56db\u5217\uff08col1\uff09\u7684\u957f\u5ea6\u5c31\u662f\uff080x1B-0x13\uff09\u4e2a\u5b57\u8282\uff0c\u4e5f\u5c31\u662f8\u4e2a\u5b57\u8282\u3002<br>\u7b2c\u4e94\u5217(col2)\u7684\u957f\u5ea6\u5c31\u662f\uff080x1F\uff0d0x1B)\u4e2a\u5b57\u8282\uff0c\u4e5f\u5c31\u662f4\u4e2a\u5b57\u8282\u3002<\/p>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" height=\"601\" width=\"680\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/7524c68bab444c4493f02e2dbcbfcb91.png\" alt=\"\"><img loading=\"lazy\" decoding=\"async\" height=\"198\" width=\"679\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/83a21d96419745909388f16b32bcf864.png\" alt=\"\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4.\u533a\u3001\u6bb5\u4e0e\u788e\u7247\u533a<\/h2>\n\n\n\n<h3 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