重慶分公司,新征程啟航
為企業提供網站建設、域名注冊、服務器等服務
為企業提供網站建設、域名注冊、服務器等服務
查看某個表的建表語句,可以使用phpmyadmin查看,首先選擇這個表所在的數據庫,比如:ecshop庫,里面有個ecs_goods表,那么查看goods表的建表語句為:
讓客戶滿意是我們工作的目標,不斷超越客戶的期望值來自于我們對這個行業的熱愛。我們立志把好的技術通過有效、簡單的方式提供給客戶,將通過不懈努力成為客戶在信息化領域值得信任、有價值的長期合作伙伴,公司提供的服務項目有:空間域名、網絡空間、營銷軟件、網站建設、雙臺子網站維護、網站推廣。
show create
table ecs_goods
把這條sql語句復制到
點擊執行,ok結果就出來了:
把顯示的結果復制到其它機器上運行,就建好一張goods表了
call sp_add();
是不是你定義的過程有問題吧,并沒有指出返回結果來
像我這樣是可以的:
CREATE PROCEDURE sp_add(a int, b int,out c int)
begin
set c=a+ b;
end;
調用過程:
call sp_add (1,2,@a);
select @a;
1先通過status命令查看Mysql運行狀態mysqlstatus;--------------mysqlVer14.14Distrib5.1.73,forredhat-linux-gnu(x86_64)usingreadline5.1Connectionid:113752Currentdatabase:information_schemaCurrentuser:push_user@localhostSSL:NotinuseCurrentpager:stdoutUsingoutfile:''Usingdelimiter:;Serverversion:5.1.73SourcedistributionProtocolversion:10Connection:LocalhostviaUNIXsocketServercharacterset:latin1Dbcharacterset:utf8Clientcharacterset:latin1Conn.characterset:latin1UNIXsocket:/tmp/mysql.sockUptime:22days8hours31min23secThreads:38Questions:1037751897Slowqueries:2356Opens:79836Flushtables:1Opentables:64Queriespersecondavg:537.282--------------在上面顯示列表的最后一條,我們來查看Slowqueries這一項的值,如果多次查看的值大于0的話,說明有些查詢sql命令執行時間過長。2)這時再通過showprocesslist命令來查看當前正在運行的SQL,從中找出運行慢的SQL語句,找到執行慢的語句后,再用explain命令查看這些語句的執行計劃。mysqlshowprocesslist;+--------+-----------+---------------------+--------------------+---------+-------+-------+------------------+|Id|User|Host|db|Command|Time|State|Info|+--------+-----------+---------------------+--------------------+---------+-------+-------+------------------+|50270|ambari|DataBase-01:41512|ambari|Sleep|23||NULL||50271|ambari|DataBase-01:41511|ambari|Sleep|6||NULL||50272|ambari|DataBase-01:41514|ambari|Sleep|23||NULL||62452|oozie|DataBase-02:42987|oozie|Sleep|25||NULL||63660|ambari|DataBase-01:56052|ambari|Sleep|0||NULL||110404|push_user|localhost:33817|quartz|Sleep|12||NULL||112835|push_user|localhost:46571|hibernate|Sleep|1||NULL||113163|push_user|localhost:56585|hibernate|Sleep|1||NULL||113289|push_user|14.118.132.20:47333|DW|Sleep|628||NULL||113320|push_user|localhost:47428|hibernate|Sleep|3||NULL||113321|push_user|localhost:47429|hibernate|Sleep|3||NULL||113322|push_user|localhost:47430|hibernate|Sleep|3||NULL||113357|push_user|localhost:52337|hibernate|Sleep|3||NULL||113364|push_user|localhost:57206|hibernate|Sleep|3||NULL||113366|push_user|localhost:34813|hibernate|Sleep|1||NULL||113398|push_user|localhost:37382|hibernate|Sleep|1||NULL||113498|push_user|localhost:47626|quartz|Sleep|12717||NULL||113709|push_user|localhost:59382|hibernate|Sleep|1||NULL||113710|push_user|localhost:33627|hibernate|Sleep|1||NULL||113715|hive|DataBase-02:54968|hive|Sleep|2390||NULL||113716|hive|DataBase-02:54969|hive|Sleep|2390||NULL||113717|hive|DataBase-02:54974|hive|Sleep|2336||NULL||113718|hive|DataBase-02:54975|hive|Sleep|2336||NULL||113719|push_user|localhost:48243|hibernate|Sleep|1||NULL||113720|push_user|localhost:48245|hibernate|Sleep|1||NULL||113721|push_user|localhost:48244|hibernate|Sleep|1||NULL||113722|push_user|localhost:48247|hibernate|Sleep|1||NULL||113723|push_user|localhost:48249|hibernate|Sleep|1||NULL||113724|push_user|localhost:48248|hibernate|Sleep|1||NULL||113745|push_user|localhost:50684|hibernate|Sleep|1||NULL||113746|push_user|localhost:50685|hibernate|Sleep|1||NULL||113747|push_user|localhost:50695|hibernate|Sleep|1||NULL||113748|push_user|localhost:50696|hibernate|Sleep|1||NULL||113749|push_user|localhost:50697|hibernate|Sleep|1||NULL||113750|push_user|localhost:50699|hibernate|Sleep|1||NULL||113751|push_user|localhost:50700|hibernate|Sleep|1||NULL||113752|push_user|localhost|information_schema|Query|0|NULL|showprocesslist||113753|push_user|14.118.132.20:28688|DW|Sleep|396||NULL|+--------+-----------+---------------------+--------------------+---------+-------+-------+------------------+38rowsinset(0.00sec)或者通過如下命令查詢:mysqluseinformation_schema;mysqlselect*fromPROCESSLISTwhereinfoisnotnull;+--------+-----------+-----------+--------------------+---------+------+-----------+--------------------------------------------------+|ID|USER|HOST|DB|COMMAND|TIME|STATE|INFO|+--------+-----------+-----------+--------------------+---------+------+-----------+--------------------------------------------------+|113752|push_user|localhost|information_schema|Query|0|executing|select*fromPROCESSLISTwhereinfoisnotnull|+--------+-----------+-----------+--------------------+---------+------+-----------+--------------------------------------------------+1rowinset(0.00sec)
方法一、使用source調用寫好的sql文件,例如:
mysql source d:\db\load.sql
方法二、記事本打開sql文件,全選復制之后,粘貼到命令窗口里面(點鼠標右鍵粘貼)