{"id":60277,"date":"2024-10-13T01:31:16","date_gmt":"2024-10-12T17:31:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60277\/"},"modified":"2024-10-13T01:31:16","modified_gmt":"2024-10-12T17:31:16","slug":"db2-9-7%e7%9a%84%e4%b8%89%e5%a4%a7%e6%ad%a6%e5%99%a8%e7%9a%84%e4%bd%9c%e7%94%a8%e6%8f%8f%e8%bf%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60277\/","title":{"rendered":"DB2 9.7\u7684\u4e09\u5927\u6b66\u5668\u7684\u4f5c\u7528\u63cf\u8ff0"},"content":{"rendered":"

DB2 9.7\u7684\u4e09\u5927\u6b66\u5668\u7684\u4f5c\u7528\u63cf\u8ff0<\/h1>\n

IBM\u7684DB2 9.7\u662f\u4e00\u6b3e\u529f\u80fd\u5f3a\u5927\u7684\u5173\u7cfb\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u4f01\u4e1a\u7ea7\u5e94\u7528\u4e2d\u3002\u5176\u8bbe\u8ba1\u65e8\u5728\u63d0\u4f9b\u9ad8\u6548\u7684\u6570\u636e\u7ba1\u7406\u548c\u5206\u6790\u80fd\u529b\u3002\u672c\u6587\u5c06\u63a2\u8ba8DB2 9.7\u7684\u4e09\u5927\u6b66\u5668\uff1a\u6570\u636e\u538b\u7f29\u3001\u5e76\u884c\u5904\u7406\u548c\u81ea\u9002\u5e94\u67e5\u8be2\u4f18\u5316\u5668\uff0c\u53ca\u5176\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n

\u4e00\u3001\u6570\u636e\u538b\u7f29<\/h2>\n

DB2 9.7\u5f15\u5165\u4e86\u5148\u8fdb\u7684\u6570\u636e\u538b\u7f29\u6280\u672f\uff0c\u80fd\u591f\u663e\u8457\u51cf\u5c11\u5b58\u50a8\u7a7a\u95f4\u7684\u9700\u6c42\u3002\u6570\u636e\u538b\u7f29\u4e0d\u4ec5\u964d\u4f4e\u4e86\u5b58\u50a8\u6210\u672c\uff0c\u8fd8\u63d0\u9ad8\u4e86I\/O\u6027\u80fd\u3002\u901a\u8fc7\u51cf\u5c11\u6570\u636e\u7684\u7269\u7406\u5b58\u50a8\u91cf\uff0cDB2\u80fd\u591f\u66f4\u5feb\u5730\u8bfb\u53d6\u548c\u5199\u5165\u6570\u636e\u3002<\/p>\n

\u4f8b\u5982\uff0cDB2\u4f7f\u7528\u4e86\u884c\u7ea7\u538b\u7f29\u548c\u5217\u7ea7\u538b\u7f29\u4e24\u79cd\u65b9\u5f0f\u3002\u884c\u7ea7\u538b\u7f29\u9002\u7528\u4e8e\u4f20\u7edf\u7684\u884c\u5b58\u50a8\uff0c\u800c\u5217\u7ea7\u538b\u7f29\u5219\u66f4\u9002\u5408\u6570\u636e\u4ed3\u5e93\u7b49\u5206\u6790\u578b\u5e94\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728DB2\u4e2d\u542f\u7528\u6570\u636e\u538b\u7f29\uff1a<\/p>\n

ALTER TABLE my_table COMPRESS YES;<\/code><\/pre>\n
\u901a\u8fc7\u542f\u7528\u6570\u636e\u538b\u7f29\uff0c\u4f01\u4e1a\u53ef\u4ee5\u5728\u4e0d\u727a\u7272\u6027\u80fd\u7684\u60c5\u51b5\u4e0b\uff0c\u663e\u8457\u964d\u4f4e\u5b58\u50a8\u9700\u6c42\u3002<\/p>\n
\u4e8c\u3001\u5e76\u884c\u5904\u7406<\/h2>\n
DB2 9.7\u7684\u5e76\u884c\u5904\u7406\u80fd\u529b\u4f7f\u5176\u80fd\u591f\u5728\u591a\u6838\u5904\u7406\u5668\u4e0a\u9ad8\u6548\u8fd0\u884c\u3002\u901a\u8fc7\u5c06\u67e5\u8be2\u548c\u6570\u636e\u64cd\u4f5c\u5206\u89e3\u4e3a\u591a\u4e2a\u5b50\u4efb\u52a1\uff0cDB2\u80fd\u591f\u540c\u65f6\u5904\u7406\u591a\u4e2a\u8bf7\u6c42\uff0c\u4ece\u800c\u63d0\u9ad8\u6574\u4f53\u6027\u80fd\u3002\u8fd9\u79cd\u5e76\u884c\u5904\u7406\u4e0d\u4ec5\u9002\u7528\u4e8e\u67e5\u8be2\u64cd\u4f5c\uff0c\u4e5f\u9002\u7528\u4e8e\u6570\u636e\u52a0\u8f7d\u548c\u5907\u4efd\u7b49\u4efb\u52a1\u3002<\/p>\n
\u4f8b\u5982\uff0c\u5728\u6267\u884c\u590d\u6742\u7684\u67e5\u8be2\u65f6\uff0cDB2\u53ef\u4ee5\u5c06\u67e5\u8be2\u5206\u89e3\u4e3a\u591a\u4e2a\u90e8\u5206\uff0c\u5e76\u5728\u4e0d\u540c\u7684\u5904\u7406\u5668\u4e0a\u5e76\u884c\u6267\u884c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728DB2\u4e2d\u542f\u7528\u5e76\u884c\u67e5\u8be2\uff1a<\/p>\n
SET CURRENT DEGREE = ANY;<\/code><\/pre>\n
\u901a\u8fc7\u8bbe\u7f6e\u5e76\u884c\u5ea6\uff0cDB2\u80fd\u591f\u6839\u636e\u7cfb\u7edf\u8d44\u6e90\u7684\u53ef\u7528\u6027\uff0c\u52a8\u6001\u8c03\u6574\u5e76\u884c\u5904\u7406\u7684\u7a0b\u5ea6\uff0c\u4ece\u800c\u4f18\u5316\u6027\u80fd\u3002<\/p>\n
\u4e09\u3001\u81ea\u9002\u5e94\u67e5\u8be2\u4f18\u5316\u5668<\/h2>\n
DB2 9.7\u7684\u81ea\u9002\u5e94\u67e5\u8be2\u4f18\u5316\u5668\u662f\u5176\u53e6\u4e00\u9879\u91cd\u8981\u7279\u6027\u3002\u4f20\u7edf\u7684\u67e5\u8be2\u4f18\u5316\u5668\u5728\u6267\u884c\u67e5\u8be2\u4e4b\u524d\u4f1a\u751f\u6210\u4e00\u4e2a\u6267\u884c\u8ba1\u5212\uff0c\u800c\u81ea\u9002\u5e94\u67e5\u8be2\u4f18\u5316\u5668\u5219\u80fd\u591f\u5728\u67e5\u8be2\u6267\u884c\u8fc7\u7a0b\u4e2d\u52a8\u6001\u8c03\u6574\u6267\u884c\u8ba1\u5212\u3002\u8fd9\u79cd\u7075\u6d3b\u6027\u4f7f\u5f97DB2\u80fd\u591f\u66f4\u597d\u5730\u5e94\u5bf9\u6570\u636e\u53d8\u5316\u548c\u67e5\u8be2\u6a21\u5f0f\u7684\u53d8\u5316\u3002<\/p>\n
\u4f8b\u5982\uff0c\u5f53DB2\u68c0\u6d4b\u5230\u67d0\u4e2a\u7d22\u5f15\u7684\u4f7f\u7528\u6548\u7387\u964d\u4f4e\u65f6\uff0c\u5b83\u53ef\u4ee5\u81ea\u52a8\u9009\u62e9\u5176\u4ed6\u66f4\u4f18\u7684\u7d22\u5f15\u6216\u8c03\u6574\u8fde\u63a5\u987a\u5e8f\uff0c\u4ece\u800c\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u67e5\u770b\u5f53\u524d\u7684\u6267\u884c\u8ba1\u5212\uff1a<\/p>\n
EXPLAIN PLAN FOR SELECT * FROM my_table;<\/code><\/pre>\n
\u901a\u8fc7\u4f7f\u7528\u81ea\u9002\u5e94\u67e5\u8be2\u4f18\u5316\u5668\uff0cDB2\u80fd\u591f\u5728\u8fd0\u884c\u65f6\u4f18\u5316\u67e5\u8be2\u6027\u80fd\uff0c\u786e\u4fdd\u7cfb\u7edf\u59cb\u7ec8\u4ee5\u6700\u4f73\u72b6\u6001\u8fd0\u884c\u3002<\/p>\n
\u603b\u7ed3<\/h2>\n
DB2 9.7\u51ed\u501f\u5176\u6570\u636e\u538b\u7f29\u3001\u5e76\u884c\u5904\u7406\u548c\u81ea\u9002\u5e94\u67e5\u8be2\u4f18\u5316\u5668\u4e09\u5927\u6b66\u5668\uff0c\u4e3a\u4f01\u4e1a\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u636e\u7ba1\u7406\u80fd\u529b\u3002\u8fd9\u4e9b\u7279\u6027\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u6027\u80fd\uff0c\u8fd8\u964d\u4f4e\u4e86\u5b58\u50a8\u6210\u672c\uff0c\u4f7f\u5f97DB2\u6210\u4e3a\u4f01\u4e1a\u7ea7\u5e94\u7528\u7684\u7406\u60f3\u9009\u62e9\u3002\u5982\u679c\u60a8\u6b63\u5728\u5bfb\u627e\u9ad8\u6548\u7684\u6570\u636e\u5e93\u89e3\u51b3\u65b9\u6848\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u6765\u90e8\u7f72DB2\uff0c\u5145\u5206\u53d1\u6325\u5176\u5f3a\u5927\u7684\u529f\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22DB2 9.7\u7684\u4e09\u5927\u6b66\u5668\uff1a\u9ad8\u6548\u6570\u636e\u7ba1\u7406\u3001\u589e\u5f3a\u5b89\u5168\u6027\u548c\u4f18\u5316\u6027\u80fd\uff0c\u52a9\u529b\u4f01\u4e1a\u63d0\u5347\u6570\u636e\u5e93\u64cd\u4f5c\u6548\u7387\u3002<\/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-60277","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60277","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=60277"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60277\/revisions"}],"predecessor-version":[{"id":60278,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60277\/revisions\/60278"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60277"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60277"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60277"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}