{"id":895,"date":"2017-09-03T21:56:03","date_gmt":"2017-09-03T13:56:03","guid":{"rendered":"http:\/\/www.5x44.cn\/?p=895"},"modified":"2017-09-03T21:56:03","modified_gmt":"2017-09-03T13:56:03","slug":"mysql%e4%b8%ad%e7%9a%84range%e5%88%86%e5%8c%ba","status":"publish","type":"post","link":"https:\/\/www.5x44.cn\/?p=895","title":{"rendered":"Mysql\u4e2d\u7684range\u5206\u533a"},"content":{"rendered":"<p>\u5f53\u8868\u8fbe\u5f0f\u7684\u503c\u5728\u7ed9\u4e88\u7684\u8303\u56f4\u5185\u65f6\uff0c\u76f8\u5e94\u7684\u884c\u5c31\u4f1a\u52a0\u5165\u5230\u8be5\u5206\u533a\u4e2d\u3002\u8303\u56f4\u5e94\u8be5\u662f\u8fde\u7eed\u7684\uff0c\u4f46\u4e0d\u8303\u56f4\u4e0d\u91cd\u53e0\uff0c\u5e76\u4e14\u4f7f\u7528<code>VALUES LESS THAN<\/code>\u64cd\u4f5c\u7b26\u3002\u901a\u8fc7\u4f7f\u7528range\u5206\u533a\u5c06\u8868\u5206\u62104\u5206\u7684\u4f8b\u5b50\u5982\u4e0b\uff1a<\/p>\n<pre>CREATE TABLE employees (\r\n    id INT NOT NULL,\r\n    fname VARCHAR(30),\r\n    lname VARCHAR(30),\r\n    hired DATE NOT NULL DEFAULT '1970-01-01',\r\n    separated DATE NOT NULL DEFAULT '9999-12-31',\r\n    job_code INT NOT NULL,\r\n    store_id INT NOT NULL\r\n)\r\nPARTITION BY RANGE (store_id) (\r\n    PARTITION p0 VALUES LESS THAN (6),\r\n    PARTITION p1 VALUES LESS THAN (11),\r\n    PARTITION p2 VALUES LESS THAN (16),\r\n    PARTITION p3 VALUES LESS THAN (21)\r\n);\r\n<\/pre>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cstore_id\u4ece1\u81f35\u88ab\u5b58\u50a8\u5230p0\uff0c6\u81f310\u88ab\u5b58\u50a8\u5230p1\uff0c\u5982\u6b64\u7c7b\u63a8\u3002\u6ce8\u610f\u6bcf\u4e2a\u5206\u533a\u90fd\u88ab\u6709\u5e8f\u5b9a\u4e49\uff0c<strong>\u4ece\u4f4e\u5230\u9ad8<\/strong>\u3002\u8fd9\u662f<strong>range<\/strong>\u7c7b\u5206\u533a\u7684\u8bed\u6cd5\u8981\u6c42\uff1b<\/p>\n<p>\u5f53\u4e0a\u9762\u7684\u4f8b\u5b50\u63d2\u5165\u4e00\u4e2astore_id\u5927\u4e8e20\u7684\u6570\u4f1a\u600e\u4e48\u6837\u5462\uff1f\u6570\u636e\u5e93\u4f1a\u62a5\u9519\uff0c\u56e0\u4e3a\u5e76\u6ca1\u6709\u5b9a\u4e49\u5b83\u5b58\u50a8\u5230\u54ea\u91cc\uff0c\u6240\u4ee5\u89e3\u51b3\u529e\u6cd5\u662f\u6dfb\u52a0\u4e00\u4e2a\u66f4\u5927\u7684\u6570\u7684\u8303\u56f4<strong>MAXVALUE<\/strong>\uff1a<\/p>\n<pre>CREATE TABLE employees (\r\n    id INT NOT NULL,\r\n    fname VARCHAR(30),\r\n    lname VARCHAR(30),\r\n    hired DATE NOT NULL DEFAULT '1970-01-01',\r\n    separated DATE NOT NULL DEFAULT '9999-12-31',\r\n    job_code INT NOT NULL,\r\n    store_id INT NOT NULL\r\n)\r\nPARTITION BY RANGE (store_id) (\r\n    PARTITION p0 VALUES LESS THAN (6),\r\n    PARTITION p1 VALUES LESS THAN (11),\r\n    PARTITION p2 VALUES LESS THAN (16),\r\n    PARTITION p3 VALUES LESS THAN MAXVALUE\r\n);\r\n<\/pre>\n<p>MAXVALUE\u63cf\u8ff0\u4e86\u4e00\u4e2a\u6574\u6570\uff0c\u5b83\u4e00\u76f4\u5927\u4e8e\u6700\u5927\u7684\u53ef\u7528\u6574\u578b\u503c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u8868\u8fbe\u5f0f\u7684\u503c\u5728\u7ed9\u4e88\u7684\u8303\u56f4\u5185\u65f6\uff0c\u76f8\u5e94\u7684\u884c\u5c31\u4f1a\u52a0\u5165\u5230\u8be5\u5206\u533a\u4e2d\u3002\u8303\u56f4\u5e94\u8be5\u662f\u8fde\u7eed\u7684\uff0c\u4f46\u4e0d\u8303\u56f4\u4e0d\u91cd\u53e0\uff0c\u5e76\u4e14\u4f7f\u7528VALUES LESS THAN\u64cd\u4f5c\u7b26\u3002\u901a\u8fc7\u4f7f\u7528range\u5206&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/www.5x44.cn\/?p=895\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37],"tags":[38,45],"class_list":["post-895","post","type-post","status-publish","format-standard","hentry","category-mysql","tag-mysql","tag-range-partitioning"],"_links":{"self":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/895","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=895"}],"version-history":[{"count":2,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/895\/revisions"}],"predecessor-version":[{"id":897,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/895\/revisions\/897"}],"wp:attachment":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=895"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=895"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=895"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}