{"id":163009,"date":"2020-10-02T22:32:51","date_gmt":"2020-10-02T14:32:51","guid":{"rendered":"http:\/\/4563.org\/?p=163009"},"modified":"2020-10-02T22:32:51","modified_gmt":"2020-10-02T14:32:51","slug":"sql-%e6%9c%ac%e4%bd%93%e6%9f%a5%e8%af%a2%e4%b8%8d%e6%85%a2-mybatis-plus-%e7%9a%84%e5%88%86%e9%a1%b5%e5%8a%9f%e8%83%bd-count-%e6%80%bb%e6%95%b0%e5%b7%a8%e6%85%a2","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=163009","title":{"rendered":"SQL \u672c\u4f53\u67e5\u8be2\u4e0d\u6162 mybatis-plus \u7684\u5206\u9875\u529f\u80fd Count \u603b\u6570\u5de8\u6162"},"content":{"rendered":"
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SQL \u672c\u4f53\u67e5\u8be2\u4e0d\u6162 mybatis-plus \u7684\u5206\u9875\u529f\u80fd Count \u603b\u6570\u5de8\u6162 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : DeathBless <\/span> <\/i> 0<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
SQL \u672c\u4f53\u662f\u4e2a\u591a\u8868\u8054\u67e5
\u672c\u6765\u4e5f\u633a\u6162\u7684 \u540e\u6765 fouce index \u4e3b\u8868 ID \u540e
\u67e5\u8be2\u901f\u5ea6\u5927\u7ea6\u53ea\u8981 300 \u6beb\u79d2<\/p>\n

\u4f46\u662f\u7528\u4e86 mybatis-plus \u7684\u81ea\u52a8\u5206\u9875\u540e
\u4ed6\u4f1a\u5728\u4e3b SQL \u5916\u5957\u4e00\u4e2a count(1)\u6765\u67e5\u8be2\u603b\u6570<\/p>\n

\u672c\u6765\u4e5f\u6ca1\u4ec0\u4e48\u95ee\u9898 \u4f46\u662f\u8fd9\u4e2a sql \u5947\u6162\u65e0\u6bd4 \u5927\u6982\u8981 6 \u79d2
\u8fd9\u662f\u4e3a\u4ec0\u4e48 \u6709\u5565\u529e\u6cd5\u4f18\u5316\u5417 <\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (27<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : BBCCBB <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e0d\u7528\u4ed6\u7684 page \u51fd\u6570, \u81ea\u5df1\u624b\u52a8\u52a0\u4e0a offset limit. <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : zoharSoul <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u628a count \u53bb\u6389.
    \u5927\u591a\u6570\u60c5\u51b5\u4e0b count \u90fd\u6ca1\u5565\u7528, \u5206\u9875\u6700\u597d\u6362\u79cd\u65b9\u5f0f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : DeathBless <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @zoharSoul \u56e0\u4e3a\u6709\u67e5\u8be2\u6761\u4ef6 \u8fd8\u4e0d\u5c11 \u6bcf\u5f20\u8868\u90fd\u6709 \u53d8\u4e86\u603b\u6570\u5c31\u8981\u53d8 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : maigebaoer <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    page count join \u8017\u6027\u80fd\u7684\u90fd\u88ab\u4f60\u7528\u4e0a\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : DeathBless <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @maigebaoer <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : ganbuliao <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    count(*) <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : zhaokun <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4ed6\u7684\u539f\u7406\u662f\u5728\u4f60\u7684 sql \u5916\u9762\u5305\u4e86\u4e00\u5c42 select count(*) from (\u4f60\u7684 sql) <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : pierswu <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u53ef\u4ee5 setSearchCount(false)\u53bb\u6389\u67e5\u8be2\u603b\u6570\u7684\uff0c\u8fd9\u79cd\u5206\u9875\u7684\u9700\u6c42\uff0c\u5982\u679c\u9700\u6c42\u5141\u8bb8\u7684\u8bdd\uff0c\u4e0d\u4e00\u5b9a\u6bcf\u4e00\u6b21\u7ffb\u9875\u90fd\u8981\u67e5\u4e00\u6b21\u603b\u6570\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : aegon466 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    mp \u5206\u9875\u8fd8\u662f\u8981\u5168\u90e8\u67e5\u51fa\u6765\u518d\u5206\u9875\u7684 \u5efa\u8bae\u81ea\u5df1\u4f18\u5316 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : zoharSoul <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @DeathBless \u603b\u6570\u7ed9\u524d\u7aef\u4e2a 99999 \u5f97\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : NPC666 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8bd5\u8bd5\u7528 pagehelper \u8fdb\u884c\u5206\u9875\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : aguesuka <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u524d\u7aef\u8981\u5c31\u624b\u5199\uff0c\u4e0d\u8981\u5c31\u4e0d\u67e5\u3002\u73b0\u4ee3 sql \u89e3\u91ca\u5668\u67e5\u603b\u6570\u8fd8\u8981 6 \u79d2\u8bf4\u660e sql \u6709\u95ee\u9898\uff0c\u8be5\u6539\u6539\uff0c\u8be5\u52a0\u7d22\u5f15\u52a0\u7d22\u5f15\uff0c\u8be5\u62c6\u8868\u62c6\u8868 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : aguesuka <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u67e5 count6 \u79d2\u67e5\u6570\u636e 0.3 \u79d2\u4f30\u8ba1\u4e5f\u505a\u6ca1\u6392\u5e8f\u5427\uff1f(\u6216\u8005\u662f\u6309\u4e3b\u952e)\u8fd9\u6837\u5206\u9875\u662f\u6709\u95ee\u9898\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : PhilC <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @zoharSoul \u6211\u4eec\u4e4b\u524d\u5c31\u8fd9\u4e48\u5e72\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : cheng6563 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6570\u636e\u591a\u4e86\u5206\u9875\u8981\u5feb\u8981\u8fd9\u6837\uff1a
    1.\u4e0d\u67e5\u603b\u6570\u3002
    2.\u7528\u4e3b\u952e\u6309\u504f\u79fb\u91cf\u5206\u9875\uff0c\u8fd9\u6837\u4f1a\u9650\u5236\u7ffb\u9875\u6570\u91cf\uff0c\u6bd4\u5982 where id > 2233 limit 20,10<\/p>\n

    \u6700\u597d\u662f\u6309\u65e5\u671f\uff0c\u65f6\u95f4\u4e4b\u7c7b\u7684\u5b57\u6bb5\u52a0\u7d22\u5f15\u8fdb\u884c\u9650\u5236 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : zoharSoul <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @PhilC #14
    \u662f\u554a, \u5e38\u89c1\u505a\u6cd5, \u4e00\u822c count \u5bf9\u4e8e\u7528\u6237\u4e5f\u6ca1\u5565\u610f\u4e49.<\/p>\n

    \u6bd4\u5982\u6211\u5237 V2EX \u4e5f\u4e0d\u5173\u5fc3\u603b\u5171\u591a\u5c11\u5e16\u5b50\u561b <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : xgq89757 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @zoharSoul \u6211\u4eec\u73b0\u5728\u5c31\u8fd9\u4e48\u5e72\u7684\u3002\u4eca\u5929\u770b\u5230\u53e6\u5916\u4e00\u4e2a\u5e16\u5b50\uff0c\u7528 explan \u91cc\u7684\u884c\u6570\uff0c\u8fd9\u4e2a\u4e0d\u7cbe\u786e\uff0c\u4f46\u5999\u554a <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : gundam0603 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6709\u7684\u7248\u672c\u5f00\u59cb count \u53ef\u4ee5\u624b\u52a8\u5199\uff0c\u81ea\u5df1\u5199\u4e2a\u53bb\u6389\u6ca1\u6709\u7684\u5b50\u67e5\u8be2\u548c\u5173\u8054\uff0c\u4f1a\u5feb\u4e0d\u5c11\uff0c\u518d\u6162\u5c31\u53ea\u80fd\u52a0 count \u7684\u7f13\u5b58\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : xiaochong0302 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @pierswu \u90a3\u5c31\u8981\u7528\u81ea\u5b9a\u4e49\u7684\u5206\u9875\u7ec4\u4ef6\u4e86\uff0c\u5176\u5b9e count \u4e5f\u53ef\u4ee5\u7f13\u5b58\u8d77\u6765\uff0c\u79bb\u4e0d\u5f00\u81ea\u5b9a\u4e49 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : gundam0603 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xiaochong0302 \u76f4\u63a5\u5199 Count \u65b9\u6cd5\u8986\u76d6\u5c31\u884c\u4e86\uff0c\u4ece\u67d0\u4e2a\u7248\u672c\u5f00\u59cb\u5c31\u652f\u6301\u4e86\uff0c\u8fd9\u79cd\u6cbb\u6807\u4e0d\u6cbb\u672c\uff0c\u8ba9\u4ea7\u54c1\u770b\u770b\u9700\u4e0d\u9700\u8981\u603b\u6570\u5427 \u6216\u8005\u52a0\u6761\u4ef6\u4ec0\u4e48\u7684\uff0c\u6570\u636e\u91cf\u5927\u4e86\u8fdf\u65e9\u4f1a\u4e0d\u884c\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : wangsongyan <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u7684\u7cfb\u7edf\u65e5\u5fd7\u5c31\u662f\u56fa\u5b9a 10000 \u6761 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Sasasu <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5e26\u7740 fliter \u6570 count \u5c31\u662f\u8fd9\u6837\u5b50\u7684<\/p>\n

    \u770b\u4f60\u4eec\u56e2\u961f\u8c01\u5f3a\u52bf
    – \u4ea7\u54c1\u5f3a\u52bf\uff1a\u5c31\u8fd9\u4e48\u653e\u7740\uff0c\u7b49\u4ea7\u54c1\u89c9\u5f97\u6162\uff0c\u7136\u540e\u544a\u8bc9\u4ed6\u6570\u603b\u6570\u82b1\u4e86 6 \u79d2
    – \u5f00\u53d1\u5f3a\u52bf\uff1a\u8fd4\u56de\u5047\u7684\u603b\u6570\u6216\u8005\u7528\u6e38\u6807\u7ffb\u9875 <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : lewis89 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8fd8\u6ca1\u6539\u5417\uff1f \u628a SQL parse \u597d \u7136\u540e\u4fee\u6539\u8bed\u6cd5\u6811 \u6709\u8fd9\u4e48\u96be\u5417\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : gundam0603 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xiaochong0302 \u641e\u9519\u4e86 \u6ca1\u8fd9\u529f\u80fd\u3002\u3002\u3002\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : pierswu <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @aegon466 mp \u5206\u9875\u662f\u4f1a\u5728\u8bed\u53e5\u540e\u9762\u518d\u62fc\u4e0a\u5206\u9875\u8bed\u53e5\u7684\uff0c\u4f60\u8bf4\u7684\u5168\u90e8\u67e5\u51fa\u6765\u662f\u4ec0\u4e48\u610f\u601d <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : gageshan <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5229\u7528\u81ea\u589e\u5b57\u6bb5\u6765\u505a\u5206\u9875\uff0cwhere p_id > xxx order by p_id limit 10 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : lijinxhua <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6b6a\u4e2a,
    \u4e3b\u5927\u5927\u7528 MP \u505a\u591a\u8868\u5173\u8054\u5206\u9875\u600e\u4e48\u641e\u5b9a\u7684?
    \u662f\u81ea\u5df1\u624b\u5199 SQL \u5417? <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    SQL \u672c\u4f53\u67e5\u8be2\u4e0d\u6162 mybati…<\/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\/163009"}],"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=163009"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/163009\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=163009"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=163009"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=163009"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}