SQL结构化查询语言速学宝典（第2版）（附光盘）- 电子书下载

基本文件流程错误 SQL 调试

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[ LANG ] /www/wwwroot/manboo.info/thinkphp/lang/zh-cn.php
[ ROUTE ] array ( 'rule' => 'book/<id>', 'route' => 'index/Search/resources', 'option' => array ( 'merge_rule_regex' => false, ), 'var' => array ( 'id' => '50527', ), )
[ HEADER ] array ( 'x-forwarded-proto' => 'https', 'cf-visitor' => '{"scheme":"https"}', 'cf-ipcountry' => 'US', 'cf-connecting-ip' => '216.73.216.94', 'cdn-loop' => 'cloudflare; loops=1', 'user-agent' => 'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])', 'accept-encoding' => 'gzip, br', 'accept' => '*/*', 'cf-ray' => 'a0caef42aa34f8ab-CMH', 'x-forwarded-for' => '216.73.216.94', 'host' => 'manboo.info', 'content-length' => '', 'content-type' => '', )
[ PARAM ] array ( 'id' => '50527', )
[ DB ] INIT mysql
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[ VIEW ] /www/wwwroot/manboo.info/application/index/view/search/resource.html [ array ( 0 => 'site_title', 1 => 'site_keywords', 2 => 'site_description', 3 => 'icp_number', 4 => 'contact_info', 5 => 'email_address', 6 => 'wechat_qrcode_url', 7 => 'site_logo_url', 8 => 'footer_copyright', 9 => 'maintenance_mode', 10 => 'hot_keywords', 11 => 'cateGroup', 12 => 'data', 13 => 'relatedResources', 14 => 'relatedResources_cates', 15 => 'recentResources', ) ]

[ DB ] CONNECT:[ UseTime:0.000424s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SHOW COLUMNS FROM `config` [ RunTime:0.000693s ]
[ SQL ] SELECT `value` FROM `config` WHERE `name` = 'maintenance_mode' LIMIT 1 [ RunTime:0.000359s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'config', 'partitions' => NULL, 'type' => 'const', 'possible_keys' => 'name', 'key' => 'name', 'key_len' => '1022', 'ref' => 'const', 'rows' => 1, 'filtered' => 100.0, 'extra' => NULL, ) ]
[ DB ] CONNECT:[ UseTime:0.000438s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SHOW COLUMNS FROM `resources` [ RunTime:0.000898s ]
[ SQL ] SELECT * FROM `resources` WHERE `id` = 50527 LIMIT 1 [ RunTime:0.000532s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'const', 'possible_keys' => 'PRIMARY,id_2,id', 'key' => 'PRIMARY', 'key_len' => '8', 'ref' => 'const', 'rows' => 1, 'filtered' => 100.0, 'extra' => NULL, ) ]
[ DB ] CONNECT:[ UseTime:0.000371s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT * FROM `resources` WHERE `jd_skuName` LIKE '%%' AND `id` <> 50527 LIMIT 10 [ RunTime:0.001614s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ALL', 'possible_keys' => 'PRIMARY,id_2,id', 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 49978, 'filtered' => 11.110000610351562, 'extra' => 'Using where', ) ]
[ DB ] CONNECT:[ UseTime:0.000404s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT * FROM `resources` WHERE `jd_cate3` = '数据库' AND `id` <> 50527 LIMIT 10 [ RunTime:0.000763s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'PRIMARY,id_2,id,jd_cate3', 'key' => 'jd_cate3', 'key_len' => '403', 'ref' => 'const', 'rows' => 2075, 'filtered' => 100.0, 'extra' => 'Using where', ) ]
[ DB ] CONNECT:[ UseTime:0.000623s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] UPDATE `resources` SET `views` = `views` + 1 WHERE `id` = 50527 [ RunTime:0.038486s ]
[ DB ] CONNECT:[ UseTime:0.000586s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SHOW COLUMNS FROM `keywords` [ RunTime:0.000679s ]
[ SQL ] SELECT * FROM `keywords` WHERE `is_audit` = 1 ORDER BY `search_count` DESC LIMIT 30 [ RunTime:0.000481s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'keywords', 'partitions' => NULL, 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 231, 'filtered' => 10.0, 'extra' => 'Using where; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000422s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT * FROM `resources` WHERE `id` <> 50527 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000524s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'index', 'possible_keys' => 'PRIMARY,id_2,id', 'key' => 'PRIMARY', 'key_len' => '8', 'ref' => NULL, 'rows' => 10, 'filtered' => 100.0, 'extra' => 'Using where', ) ]
[ DB ] CONNECT:[ UseTime:0.000454s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate2` FROM `resources` WHERE ( jd_cate2 <> "" ) ORDER BY `jd_cate2` ASC [ RunTime:0.002582s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'range', 'possible_keys' => 'jd_cate2', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => NULL, 'rows' => 64, 'filtered' => 100.0, 'extra' => 'Using where; Using index for group-by', ) ]
[ DB ] CONNECT:[ UseTime:0.000335s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '中小学教辅' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.003815s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 604, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000321s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '书法' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000679s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 6, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000495s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '二手书' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.001037s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 28, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000757s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '传记' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000601s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 2, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.001519s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '养生/保健' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000568s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 15, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000301s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '动漫' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000953s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 98, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.001843s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '励志与成功' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.059915s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 10444, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000562s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '医学' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000906s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 13, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.001104s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '历史' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.001068s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 27, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000302s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '哲学' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000906s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 18, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.001056s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '国学/古籍' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000434s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 4, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.001208s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '外语学习' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000943s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 106, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000404s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '大中专教材教辅' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.001123s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 106, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000348s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '套装书' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000551s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 5, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000465s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '婚恋与两性' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000414s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 2, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000730s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '字典词典/工具书' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000539s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 2, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000263s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '学习用品' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000577s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 17, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000428s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '学历考试辅导' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000758s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 20, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.001115s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '家教' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.008827s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 1580, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000544s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '小说' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.002020s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 44, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000516s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '工业技术' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.004481s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 13, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000339s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '建筑' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000433s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 1, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.001158s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '心理学' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.001221s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 212, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000413s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '护理护具' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000510s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 2, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000448s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '政治/军事' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000906s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 24, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.003450s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '教学/实验用品' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000568s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 19, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000293s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '文创用品' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000504s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 1, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000372s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '文化' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000436s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 4, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000337s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '文化用品' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000502s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 5, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000377s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '文学' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000639s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 33, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000249s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '旅游/地图' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000461s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 16, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000469s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '日文图书' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000629s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 1, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000375s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '早教/智能玩具' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000412s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 1, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000333s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '服务产品' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000411s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 2, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000296s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '本册纸签' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.001045s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 162, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000225s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '杂志/期刊' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000615s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 37, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000245s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '棋牌麻将' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000458s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 5, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.004684s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '法律' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000437s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 7, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000251s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '港台图书' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000469s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 9, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000329s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '电动车配件' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000446s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 1, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000317s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '电子与通信' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000546s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 7, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000266s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '白酒' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000489s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 4, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000293s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '益智玩具' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000601s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 32, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000707s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '社会科学' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000816s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 57, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000337s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '科学与自然' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000711s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 14, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.001515s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '科普读物' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000901s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 58, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000313s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '积木拼插' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000400s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 2, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000343s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '童书' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.052117s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 12756, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000399s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '管理' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.001026s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 92, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000377s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '经济' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.001087s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 99, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000474s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '绘图计算用品' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000564s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 1, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000407s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '考试' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.027346s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 6042, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.001077s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '艺术' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000687s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 1, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000654s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '计算机' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000678s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 1, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.001420s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '计算机与互联网' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.101966s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 16380, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000533s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '身体护理' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000774s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 1, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000487s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '软件' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000748s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 1, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.001510s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '运动/健身' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000578s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 2, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000492s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '进口原版' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000628s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 10, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000476s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '金融与投资' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.001740s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 661, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000267s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '青少年素质培养' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000420s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 5, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.000313s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '青春文学' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000498s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 50, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]
[ DB ] CONNECT:[ UseTime:0.002231s ] mysql:host=127.0.0.1;port=3306;dbname=manboo_infoac;charset=utf8mb4
[ SQL ] SELECT DISTINCT `jd_cate3` FROM `resources` WHERE `jd_cate2` = '音乐' AND ( jd_cate3 <> "" ) ORDER BY `jd_cate3` ASC [ RunTime:0.000409s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'resources', 'partitions' => NULL, 'type' => 'ref', 'possible_keys' => 'jd_cate2,jd_cate3', 'key' => 'jd_cate2', 'key_len' => '403', 'ref' => 'const', 'rows' => 3, 'filtered' => 100.0, 'extra' => 'Using index condition; Using where; Using temporary; Using filesort', ) ]

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SQL结构化查询语言速学宝典（第2版）（附光盘）

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