\u5f15\u7528\u5730\u5740\uff1ahttp:\/\/tuibian.com\/?p=707<\/p>\n
discuz\u4e2dviewthread.php\u662f\u7528\u6765\u8bfb\u53d6\u4e00\u4e2a\u8bdd\u9898\u5185\u76f8\u5173\u5e16\u5b50\u7684\u7a0b\u5e8f\uff0c\u76f8\u5173\u7684sql\u8bed\u53e5\u5927\u6982\u4e3a\uff1a<\/p>\n
\r\nSELECT p.*, m.uid, m.username, m.groupid, m.regdate, m.lastactivity, m.posts, m.digestposts, m.oltime,\r\n m.pageviews, m.credits, m.extcredits1, m.extcredits2, m.extcredits3, m.extcredits4, m.extcredits5, m.extcredits6,\r\n m.extcredits7, m.extcredits8, m.email, m.gender, m.showemail, m.invisible, m.avatarshowid, m.xspacestatus, mf.nickname, mf.site,\r\n mf.icq, mf.qq, mf.yahoo, mf.msn, mf.taobao, mf.alipay, mf.location, mf.medals, mf.avatar, mf.avatarwidth,\r\n mf.avatarheight, mf.sightml AS signature, mf.customstatus\r\n FROM {$tablepre}posts p\r\n LEFT JOIN {$tablepre}members m ON m.uid=p.authorid\r\n LEFT JOIN {$tablepre}memberfields mf ON mf.uid=m.uid\r\n WHERE p.tid=\u2019TID\u2019 AND p.invisible=\u20190\u2032 ORDER BY dateline LIMIT 60\r\n<\/pre>\n\u8fd9\u4e2a\u8bed\u53e5\u4e2d\u91c7\u7528\u4e86\u4e24\u4e2aleft join\u67e5\u8be2\uff0c\u5982\u679c\u5148\u67e5\u8be2posts\u8868\uff0c\u7136\u540e\u518d\u67e5\u8be2members\u548cmemberfields\u8868\u662f\u4e0d\u662f\u4f1a\u901f\u5ea6\u66f4\u5feb\u5462\uff1a<\/p>\n
\u7a0b\u5e8f1\uff1a\u91c7\u7528\u5b8c\u5168\u7684\u8054\u8868\u67e5\u8be2\uff1a<\/p>\n
query(\"SELECT p.*, m.uid, m.username, m.groupid, m.regdate, m.lastactivity, m.posts, m.digestposts, m.oltime,\r\n m.pageviews, m.credits, m.extcredits1, m.extcredits2, m.extcredits3, m.extcredits4, m.extcredits5, m.extcredits6,\r\n m.extcredits7, m.extcredits8, m.email, m.gender, m.showemail, m.invisible, m.avatarshowid, m.xspacestatus, mf.nickname, mf.site,\r\n mf.icq, mf.qq, mf.yahoo, mf.msn, mf.taobao, mf.alipay, mf.location, mf.medals, mf.avatar, mf.avatarwidth,\r\n mf.avatarheight, mf.sightml AS signature, mf.customstatus\r\n FROM {$tablepre}posts p\r\n LEFT JOIN {$tablepre}members m ON m.uid=p.authorid\r\n LEFT JOIN {$tablepre}memberfields mf ON mf.uid=m.uid\r\n WHERE p.tid=\u2019$i\u2019 AND p.invisible=\u20190\u2032 ORDER BY dateline LIMIT 60\");\r\n \r\n while($post = $db->fetch_array($query)) {\r\n \r\n \/\/do somthing;\r\n }\r\n}\r\n$mtime = explode(\u2018 \u2018, microtime()); \r\n$runtime = ($mtime[1] + $mtime[0] \u2013 $discuz_starttime);\r\n?><\/pre>\n\u7a0b\u5e8f\u8bfbtid\u4ece395000\u5230398770\u7684\u6240\u6709\u8bdd\u9898\uff0c\u8fd0\u884c8\u6b21\uff0c\u8fd0\u884c\u65f6\u95f4\u5206\u522b\u4e3a\uff1a
\n19.4085040092 16.5643789768 13.6189751625 14.2483608723 14.4175901413 14.3845379353 17.1536540985 17.2402610779
\n\u53ef\u4ee5\u770b\u5230\u8fd0\u884c\u4e24\u4e09\u6b21\u540emysql\u7684query cache\u5f00\u59cb\u751f\u6548\uff0c\u901f\u5ea6\u9010\u6e10\u7a33\u5b9a\u572814\u79d2\u5de6\u53f3<\/p>\n
\u7a0b\u5e8f2\uff1a\u5148\u8bfb\u53d6\u76f8\u5173cdb_posts\u4e2d\u7684\u6570\u636e\uff0c\u518d\u7528\u8054\u8868\u67e5\u8be2\u7528\u6237\u7684\u4fe1\u606f\u3002<\/p>\n
query(\"SELECT * FROM {$tablepre}posts WHERE tid=\u2019$i\u2019 AND invisible=\u20190\u2032 ORDER BY dateline LIMIT 60\");\r\n while ($post = $db->fetch_array($query))\r\n {\r\n if ($post['authorid'])\r\n {\r\n $uid .= \",\".$post['authorid'];\r\n }\r\n }\r\n $query = $db->query(\"SELECT m.uid, m.username, m.groupid, m.regdate, m.lastactivity, m.posts, m.digestposts, m.oltime,\r\n m.pageviews, m.credits, m.extcredits1, m.extcredits2, m.extcredits3, m.extcredits4, m.extcredits5, m.extcredits6,\r\n m.extcredits7, m.extcredits8, m.email, m.gender, m.showemail, m.invisible, m.avatarshowid, m.xspacestatus, mf.nickname, mf.site,\r\n mf.icq, mf.qq, mf.yahoo, mf.msn, mf.taobao, mf.alipay, mf.location, mf.medals, mf.avatar, mf.avatarwidth,\r\n mf.avatarheight, mf.sightml AS signature, mf.customstatus FROM {$tablepre}members m \r\n LEFT JOIN {$tablepre}memberfields mf ON mf.uid=m.uid\r\n WHERE m.uid IN ($uid)\r\n \");\r\n}\r\n$mtime = explode(\u2018 \u2018, microtime()); \r\n$runtime = ($mtime[1] + $mtime[0] \u2013 $discuz_starttime);\r\n?><\/pre>\n\u8fd0\u884c\u65f6\u95f4\u4f9d\u6b21\u4e3a\uff1a
\n14.0723490715 14.4422261715 13.4820911884 13.289301157 13.0309917927 13.1161420345 12.8048489094 12.6428101063
\n\u8fd0\u884c\u65f6\u95f4\u5927\u5927\u7f29\u77ed\uff0c\u57fa\u672c\u572813\u79d2\u5de6\u53f3<\/p>\n
\u7a0b\u5e8f\u4e09\uff1a\u5148\u8bfb\u53d6\u76f8\u5173cdb_posts\u4e2d\u7684\u6570\u636e\uff0c\u518d\u5206\u522b\u67e5\u8be2cdb_members\u548ccdb_memberfields\u4e2d\u7684\u4fe1\u606f\u3002<\/p>\n
query(\"SELECT * FROM {$tablepre}posts WHERE tid=\u2019$i\u2019 AND invisible=\u20190\u2032 ORDER BY dateline LIMIT 60\");\r\n while ($post = $db->fetch_array($query))\r\n {\r\n if ($post['authorid'])\r\n {\r\n $uid .= \",\".$post['authorid'];\r\n }\r\n }\r\n $query = $db->query(\"SELECT uid, username, groupid, regdate, lastactivity, posts, digestposts, oltime,\r\n pageviews, credits, extcredits1, extcredits2, extcredits3, extcredits4, extcredits5, extcredits6,\r\n extcredits7, extcredits8, email, gender, showemail, invisible, avatarshowid, xspacestatus FROM {$tablepre}members \r\n \r\n WHERE uid IN ($uid)\r\n \"); \r\n $query = $db->query(\"SELECT nickname, site,icq, qq, yahoo, msn, taobao, alipay, location, medals, avatar, avatarwidth,\r\n avatarheight, sightml AS signature, customstatus FROM {$tablepre}memberfields \r\n \r\n WHERE uid IN ($uid)\r\n \"); \r\n}\r\n$mtime = explode(\u2018 \u2018, microtime()); \r\n$runtime = ($mtime[1] + $mtime[0] \u2013 $discuz_starttime);\r\n?><\/pre>\n\u8fd0\u884c\u65f6\u95f4\u4f9d\u6b21\u4e3a\uff1a
\n14.2967050076 13.7778971195 14.3256859779 15.5803039074 13.5902359486 13.9162919521 14.1429729462 14.4423420429
\n\u57fa\u672c\u572814\u79d2\u5de6\u53f3<\/p>\n
\u7ed3\u8bba\uff0c\u5bf9\u4e8e\u6570\u636e\u91cf\u8f83\u5927\u7684\u7f51\u7ad9\uff0c\u91c7\u7528\u5148\u8bfb\u53d6\u76f8\u5173cdb_posts\u4e2d\u7684\u6570\u636e\uff0c\u518d\u7528\u8054\u8868\u67e5\u8be2\u7528\u6237\u7684\u4fe1\u606f\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u66f4\u63d0\u9ad8\u7a0b\u5e8f\u8fd0\u884c\u6548\u7387\uff0c\u51cf\u5c11\u5bf9\u670d\u52a1\u5668\u7684\u8d1f\u8f7d\uff0c\u867d\u7136\u589e\u52a0\u4e86\u4e00\u6b21\u67e5\u8be2\uff0c\u4f46\u662f\u7531\u4e8e\u67e5\u8be2\u7684\u8bed\u53e5\u7b80\u5355\u5316\uff0c\u56e0\u6b64\u53cd\u800c\u53ef\u4ee5\u8282\u7701\u4e00\u4e9b\u8fd0\u884c\u65f6\u95f4\u3002<\/p>\n
*******************************
\nps\uff1a\u4ee5\u4e0a\u65b9\u6cd5\u6211\u90fd\u505a\u4e86\u6d4b\u8bd5\uff0c\u7ed3\u679c\u5374\u8ddf\u4e0a\u9762\u7684\u4e0d\u4e00\u6837\uff0c\u6211\u6d4b\u5f97\u7684\u8fd8\u662f\u8bba\u575b\u539f\u672c\u7684\u4ee3\u7801\u7528\u65f6\u6700\u5c11\uff0c\u5012\u662f\u628aleftjoin\u53d8\u4e3a\u9017\u53f7\u76f4\u63a5\u8fde\u8868\u67e5\u8be2\u4f1a\u7a0d\u5fae\u5feb\u4e00\u4e9b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f15\u7528\u5730\u5740\uff1ahttp:\/\/tuibian.com\/?p=707 discuz\u4e2dviewthread.php\u662f\u7528\u6765\u8bfb\u53d6\u4e00\u4e2a\u8bdd\u9898\u5185\u76f8\u5173\u5e16\u5b50\u7684\u7a0b\u5e8f\uff0c\u76f8\u5173\u7684sql\u8bed\u53e5\u5927\u6982\u4e3a\uff1a SELECT p.*, m.uid, m.username, m.groupid, m.regdate, m.lastactivity, m.posts, m.digestposts, m.oltime, m.pageviews, m.credits, m.extcredits1, m.extcredits2, m.extcredits3, m.extcredits4, m.extcredits5, m.extcredits6, m.extcredits7, m.extcredits8, m.email, m.gender, m.showemail, m.invisible, m.avatarshowid, m.xspacestatus, mf.nickname, mf.site, mf.icq, mf.qq, mf.yahoo, mf.msn, mf.taobao, mf.alipay, mf.location, mf.medals, mf.avatar, mf.avatarwidth, … \u7ee7\u7eed\u9605\u8bfb