{"id":84476,"date":"2020-05-15T22:02:33","date_gmt":"2020-05-15T14:02:33","guid":{"rendered":"http:\/\/4563.org\/?p=84476"},"modified":"2020-05-15T22:02:33","modified_gmt":"2020-05-15T14:02:33","slug":"sql-%e4%bc%98%e5%8c%96-%e9%ba%bb%e7%83%a6%e5%a4%a7%e4%bd%ac%e7%9c%8b%e4%b8%8b%e8%bf%99%e6%ae%b5-sql-%e6%80%8e%e4%b9%88%e4%bc%98%e5%8c%96%e8%83%bd%e5%bf%ab%e7%82%b9","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=84476","title":{"rendered":"[sql \u4f18\u5316] \u9ebb\u70e6\u5927\u4f6c\u770b\u4e0b\u8fd9\u6bb5 sql \u600e\u4e48\u4f18\u5316\u80fd\u5feb\u70b9"},"content":{"rendered":"
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[sql \u4f18\u5316] \u9ebb\u70e6\u5927\u4f6c\u770b\u4e0b\u8fd9\u6bb5 sql \u600e\u4e48\u4f18\u5316\u80fd\u5feb\u70b9 <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : zhaoxixiangban <\/span> <\/i> 3<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
CREATE TABLE `fx_share` (
`id` int(11) NOT NULL AUTO_INCREMENT COMMENT ‘ID’,
`share_id` varchar(36) NOT NULL COMMENT ‘\u5206\u4eab ID’,
`share_channel_id` varchar(10) DEFAULT NULL COMMENT ‘\u5206\u4eab\u6e20\u9053 ID’,
`aim_id` varchar(36) NOT NULL COMMENT ‘\u5206\u4eab\u76ee\u6807 ID’,
`share_url` varchar(255) DEFAULT NULL COMMENT ‘\u5206\u4eab\u7684\u94fe\u63a5’,
`share_user_id` varchar(36) NOT NULL COMMENT ‘\u5206\u4eab\u53d1\u8d77\u4eba\uff08\u5bfc\u8d2d\uff09’,
`share_title` varchar(255) DEFAULT NULL COMMENT ‘\u5206\u4eab\u7684\u6807\u9898\uff08\u9884\u7559\u5b57\u6bb5\uff09’,
`share_extra` varchar(255) DEFAULT NULL COMMENT ‘\u5206\u4eab\u7684\u53c2\u6570\uff08\u9884\u7559\u5b57\u6bb5\uff09’,
`watch_count` int(11) DEFAULT NULL COMMENT ‘\u6d4f\u89c8\u6b21\u6570’,
`create_time` datetime NOT NULL COMMENT ‘\u521b\u5efa\u65f6\u95f4’,
`update_time` datetime DEFAULT NULL COMMENT ‘\u66f4\u65b0\u65f6\u95f4’,
`deleted` tinyint(1) DEFAULT NULL COMMENT ‘\u5220\u9664\uff1a0 \u672a\u5220\u9664\uff0c1 \u5220\u9664’,
`bind_status` varchar(5) DEFAULT ‘true’ COMMENT ‘\u7ed1\u5b9a\u72b6\u6001 \u7528\u4e8e\u987e\u5ba2\u548c\u5bfc\u8d2d\u7ed1\u5b9a\uff08\u4e3a 0 \u65f6\u53ef\u4ee5\u7ed1\u5b9a\uff0c\u4e3a 1 \u65f6\u4e0d\u53ef\u4ee5\u7ed1\u5b9a\uff09’,
PRIMARY KEY (`id`,`share_id`) USING BTREE,
UNIQUE KEY `unx_shareid` (`share_id`) USING BTREE,
KEY `idx_userid` (`share_user_id`) USING BTREE,
KEY `idx_aim` (`aim_id`) USING BTREE,
KEY `create_time_index` (`create_time`) USING BTREE
) ENGINE=InnoDB AUTO_INCREMENT=811316 DEFAULT CHARSET=utf8mb4 COMMENT=’\u5206\u4eab\u8868’;<\/p>\n

EXPLAIN SELECT
`share_user_id` AS `shoppingGuideId`,
count( share_user_id ) AS `statisticNum`
FROM
fx_share FORCE INDEX(create_time_index)
WHERE
create_time > ‘2020-01-01 00:00:03’ AND create_time <‘2020-06-28 16:55:03’
GROUP BY
`shoppingGuideId` <\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (21<\/span>) <\/div>\n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : zhaoxixiangban <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    “id” “1”
    “select_type” “SIMPLE”
    “table” “fx_share”
    “partitions” “range”
    “type” “range”
    “possible_keys” “idx_userid,create_time_index”
    “key” “key_len” “create_time_index”
    “ref” “5”
    “rows” “217959”
    “filtered” “100”
    “Extra” “Using index condition; Using temporary; Using filesort” <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : freebird1994 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8054\u5408\u7d22\u5f15\u54af\uff0cshare_user_id,create_time \u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : gengz <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5efa\u4e2a\u7d22\u5f15(share_user_id, create_time) <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : purensong <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u60f3\u6cd5\u662f\u518d\u6d3e\u751f\u51fa\u4e00\u5217\uff0c\u628a create_time \u7684\u65e5\u671f\u63d0\u53d6\u51fa\u6765\u4f5c\u4e3a\u5b57\u6bb5 date\uff0c\u52a0\u4e0a\u7d22\u5f15\uff0c\u5148\u7b5b\u9009 date \u518d\u7b5b\u9009 create_time <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : dongisking <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    create_time \u5efa\u7d22\u5f15\u4e0d\u597d\uff0c4F \u65b9\u6848\u4e0d\u9519 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : zhaoxixiangban <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @purensong \u4f60\u662f\u8aac\uff0c\u589e\u52a0\u5b57\u6bb5 date copy create_time \u5b57\u6bb5\uff0c\u7136\u540e [date> ‘2020-01-01 00:00:03’ AND date<‘2020-06-28 16:55:03’ and create_time > ‘2020-01-01 00:00:03’ AND create_time <‘2020-06-28 16:55:03’ ] \u8fd9\u6837\u4e48\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : zhaoxixiangban <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @freebird1994 \u611f\u8c22 \uff0c\u4f46\u662f\u5efa\u7acb\u8054\u5408\u7d22\u5f15\u6ca1\u6709\u6539\u5584 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : zhaoxixiangban <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @gengz \u611f\u8c22 \uff0c\u4f46\u662f\u5efa\u7acb\u8054\u5408\u7d22\u5f15\u6ca1\u6709\u6539\u5584 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : zhaoxixiangban <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @dongisking \u55ef \u6211\u8bd5\u8bd5\uff0c\u8c22\u8c22 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : stevenkang <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5efa\u8bae\u6309\u7c92\u5ea6\u5b9a\u65f6\u7edf\u8ba1\uff0c\u8981\u7528\u65f6\u76f4\u63a5\u4ece\u7edf\u8ba1\u8868\u67e5\u3002<\/p>\n

    12 \u5c0f\u65f6\u4ee5\u5185\u7684\u6570\u636e\uff0c\u6309\u5206\u949f\u7edf\u8ba1\uff1b
    1 \u5468\u4ee5\u5185\u7684\u6570\u636e\uff0c\u6309\u5c0f\u65f6\u7edf\u8ba1\uff1b
    \u4e00\u5468\u4ee5\u4e0a\u7684\u6570\u636e\uff0c\u6309\u5929\u7edf\u8ba1\uff1b <\/div>\n<\/p><\/div>\n<\/li>\n

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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : zhaoxixiangban <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @stevenkang \u8fd9\u4e2a\u660e\u5929\u5c31\u8981\u7528\uff0c\u6211\u4e5f\u662f\u8fd9\u4e48\u60f3\u7684\uff0c\u7a7a\u95f4\u6362\u65f6\u95f4\u3002\u4f46\u662f\u5b9e\u73b0\u9700\u8981\u70b9\u65f6\u95f4\uff0c\u53ea\u80fd\u5148\u4e0a\u529f\u80fd\u540e\u9762\u4f18\u5316\u4e86\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : goodboy95 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e3a\u4ec0\u4e48\u4e0a\u662f\u5148 share_user_id \u518d create_time \u7684\uff1f\u8fd9\u6309\u7406\u8bf4\u4e0d\u5e94\u8be5\u662f\u5148\u7b5b create_time\uff0c\u518d\u7167 share_user_id \u53bb\u5206\u7ec4\u5417\uff1f\u6211\u5f00\u59cb\u5bf9\u81ea\u5df1\u7684\u77e5\u8bc6\u4ea7\u751f\u6000\u7591\u4e86\u2026\u2026
    \u4e0d\u8fc7\u6000\u7591\u5f52\u6000\u7591\uff0c\u8bd5\u4e00\u4e0b\u5efa\u7acb(create_time, share_user_id)\u7684\u7ec4\u5408\u7d22\u5f15\u5427\uff0c\u4e5f\u7b97\u662f\u5e2e\u6211\u8bc1\u660e\u4e00\u4e0b\u6211\u7684\u77e5\u8bc6\u6709\u6ca1\u6709\u95ee\u9898\u4e86\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : goodboy95 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u987a\u4fbf\u628a FORCE_INDEX \u53bb\u6389\u518d\u770b\u770b\uff0c\u5efa\u7ec4\u5408\u7d22\u5f15\u4e4b\u540e FORCE_INDEX \u5bb9\u6613\u7eca\u811a <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : zhaoxixiangban <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @goodboy95 #13 \u53d7\u6559\u4e86\uff0c\u5230 1s \u5185\u4e86\u3002\u7ec4\u5408\u7d22\u5f15\u4e5f\u6709\u987a\u5e8f\u95ee\u9898\uff0c\u7ec4\u5408\u7d22\u5f15\u7528 FORCE_INDEX \u4f1a\u6709\u5f71\u54cd <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : jsq2627 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    https:\/\/www.db-fiddle.com\/f\/mH4oTUgZF5fzCHJ1Fxf9kt\/0 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : zhaoxixiangban <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @jsq2627 #15 \u53ef\u4ee5\u7684 \u8d5e\uff01 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : sansanhehe <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @zhaoxixiangban \u6240\u4ee5\u4f60\u6700\u7ec8\u662f\u7528\u7684(create_time, share_user_id)\u7d22\u5f15\uff0c\u8fd8\u662f(share_user_id, create_time)\u7d22\u5f15\uff1f\u6709\u6ca1\u6709\u7528 force index \uff1f\u53ef\u4ee5\u5206\u4eab\u4e00\u4e0b\u5417\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : goodboy95 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @zhaoxixiangban \u597d\u5427\uff0c\u628a\u8303\u56f4\u67e5\u8be2\u7684\u60c5\u51b5\u7ed9\u5fd8\u4e86\u2026\u2026\u786e\u5b9e\u5148 share_user_id \u624d\u5bf9\u2026\u2026 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : zhaoxixiangban <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @sansanhehe #17 (share_user_id, create_time) \u6ca1\u6709\u7528 force index \u53c2\u8003 15 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : kimchan <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @zhaoxixiangban #19 \u60f3\u95ee\u4e0b, 15 \u548c 2 3 \u6709\u533a\u522b\u5417.. \u56e0\u4e3a\u6211\u770b\u4f60\u524d\u9762\u8bf4\u7684\u5efa\u7acb\u8054\u5408\u7d22\u5f15\u6ca1\u6709\u6539\u5584. \u770b\u7684\u6709\u70b9\u61f5 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : zhaoxixiangban <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @kimchan #20 \u524d\u9762\u6211\u6ca1\u6709\u53bb\u6389 \u201cFORCE_INDEX\u201d <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    [sql \u4f18\u5316] \u9ebb\u70e6\u5927\u4f6c\u770b\u4e0b\u8fd9\u6bb5…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/84476"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=84476"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/84476\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=84476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=84476"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=84476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}