一、对数据库的操作

1.  创建一个库

create database 库名

create database 库名 character set 编码

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" alt="" />

创建带有编码的

aaarticlea/png;base64,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" alt="" />

查看编码:

aaarticlea/png;base64,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" alt="" />

一般使用如下编码:

create database exam default character set utf8 collate utf8_general_ci;

2.  删除一个库

drop database 库名

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" alt="" />

3.  使用库

use 库名

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAKYAAAApCAIAAAAwDMUtAAAAAXNSR0IArs4c6QAAAAlwSFlzAAAOxAAADsQBlSsOGwAAA6RJREFUeF7tXDtyFEEMXVNknIEzwBH2BpA4dOTQCcSszwAX4ADYl9gUfAG4ABSfEOKlsaqESq1Wq3+7nmmNq1x2l0Yjvadf9469ub37dXP38+bTjy/f/pxfvt74tXYEHq3dQfePI+CUTxcTTrlTPh0C0znsWe6UT4fAdA57ljvl0yEwncNn4SjmsAlfh2dPn+x2u9v3b0djsN/v8RHb7RZ/hnW6MtqSjvrRqdh+6i91MIVDR6tEVSco7AEUkVdYZACN9r+X/lSkYhyj17BC14/s9QkoV1BeNOvZ6LFHc5CEK6uzQuAxuyd+DMYvLbzxz6AnLtSwaC/aIBwuvcKnjGEZI9pjaR/MYIu/gECqwov8Zd2sYDR7i5zlgJQl51IFiq7b+aZxUxfjFntaCmm2ILMCTgmg8ScmEgqDkkFjTWthp2HRy8rSEIlhZcSgQEW1TGVnUUTGwmIVySZoF4FWyqEYYDVut6mFbywSKXswexoTqEJP6oniOoRmUVTZkS+gHBOaNbZUn7MbQbPQ0mgVzYiU0pUsaOLtED2iVRY9tFVVADLiFr4vv7p4Qd0TvVWKUmpcinUq1djoJyYBY4UmR8oeS5ajmxZ/mbDiL+viqZhor3ZJGEvfirGHdksHNbK+VrEKkO1QWAs77S6WFGG1umVItjuzGsleg7AMSGmWrwbWaR2xZvm0AK3Pcad8fZxmPHLKZ6X8MJ3j8zp8vy8P1+bw/N/n5W+uLl7GO+aO8NDNdEe11apObs/xDfhf2CHRcQOmnF7F+NqPBos2eNVE2m88uT3HNyBQfs91+BYVdyPrdr7tTLjkOATOwh+khbegwhVehLq+Di9CvYvPzGPuxVNDsDJ7oMhCpEi+/QCVGRl+rThYRT5EeyoOgClu48gGzQUTO358hDCxRsDOjER5ChaLJFEe+WDCqfUUXln5IGCxByNGsUfMGd3+0TRT/QWU0zNXi4ld5ClS8TFk3Vm0eJwZ99RS+xVM6uy0gFwhY6WcZUn2SR3lgSERNSwM3YegUvt1QMbZmSUiFtAoL/38bkQso05llix9bqm8BVY0TxlmRzzXYhuT4eObsi+nO0gWDeLmUpRns5I47lWMP5Ysp2TEMyPrIGxeEUe8VEqkwGEzmoJnBZEFt8C/kPjw8fvnr7/PL18V3OmiBAGawQ8km1P8WHu585vt1lAYSrvh8YF1yrth/qBmNMUrp7wb5UtR5JQvhaludjrl3aBciiKnfClMdbPzL+0s+k6FIWTWAAAAAElFTkSuQmCC" alt="" />

4.查看当前正在操作的库

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAPcAAAB5CAIAAABqVCCsAAAAAXNSR0IArs4c6QAAAAlwSFlzAAAOxAAADsQBlSsOGwAACUVJREFUeF7tnf2ZHDUMxu/uv0AJJC2QFq4CaAAagBLYbQEaIA0chBrSQEIngQo4ZuONorMtj+yRP+/dh+fhMmvL0k/vaD07Hu/tX3//e/N4fX378sXpdHr4/dcbvIoIvHv3jvrd398X2UAnewJ39iafscVN2fR6xhiGCx0qHy4lcMicAFRujhQGhyMAlQ+XEjhkTgAqN0cKg8MRuO3yHYv0XYQ7Xu/bib7fgdDotgFWMhuVqpeg2vmyOl361HL3RUQYgzvItWgVp7MjjVswSoGTWeLW288yWxApdQk1XTtfR7zlffuoPOH9FOD0EizLU237BV5JZVvK19bevQrGMu8SmbH89MN33jBULXio4d9UL72z3xXREFPi8075UZie+YT+uCOSJwn/XQi8O0e0W029ZEdNaexr4pVc5U5q7ITtE2EmkO7CMdd0aFCs5c45TWWlCL3G/LhSteSf1bik6QRKjf/cDqXNzX92s+jZ904PskDKS9jnI4ZlMmoqPJgbb5kKlXDKjOf2MpixcEVqsq5xUXNWpMfN/bhMt7eKy4s992PdpL0tN002u7cxULkr+dsrV1hS8BqJ0+xCGpdqyW6t5aYqqTkaaaLG126fyFeUW/qjNZqv3BOy6pmQp3KK1puUS3P0Atf1EqeTKpGD3BNPap97vCBwSdnhzOSg8TJuEmR9vg66faS7ePVJJVA6U3OvcqT2VEpp7qusvt6cm/fSXF2F4/Ij7m/JDn9L4y2fc0crgvtEiiKKxsXbU0c+iue/Z1/DJxpX1EmJwDgnQMldoQLvC7ocOXfRtzuBoTKeMWPhMy1NASPQVDnMP3y75xIOSARaXuHsZuFSy7dnKNyDFHiKYpcXGsxIIKOWzxgefAaBjQBUDhmsTwAqXz/HiPCq8scric//BxgQWIgAavlCyUQoAoEvKt/KOCo5dLIkAV7LfZHn3h5fElBBUOBWAK1qF1I56nhVzjDek8D1rtDj43/urtD5dN721gpvUtJCCM9ZHHdApMVMWTeJewph6bGdyi8S5yp3IQ+1FGGiLIDbaMnCdyyjZQT+2BNIqXyoBTf2oVezCG7V0BYaRi0vBIduExGAyidKFlwtJACVF4JDt4kIQOUTJQuuFhIIVI67Q4Uk0W1cAqjl4+YGnlkRgMqtSMLOuASg8nFzA8+sCKRUnru2jj/kb+XfZqeS2aiHXsi5BJzNsl6GxGDKI2BZy7NWJul3rcgyeyTB4fqT9M5pR8ZC35YELFWu91svcb3Ngy2lJVYQ+kGwI3QP1iT+cn54c/1VW/3aOk+13u5zLs7owcRb0o5wkqncHeTC9okPDT0KN2PhTo6Q5mfuQ0rlSjQ8qVKCveO7Oki0j/aVfNAc1+hy12ElKzTrQsDy6jMMIPfC0aQ9n2OEywMbXBo2GKKLVuYdtOK8nOqf8vLRsL0Td1Rt7i1P/enJNwr5vPp2nldUuQZNjbJHNhPaDceVGkPimjwO3sb46tNVULr2oqtS7zhNhb2rtGh7MsjfdVgl+3Rcsi9dHeZeP0SzixNjNNEbXH2OFhL8AQGPQOcZC/IBAg0IQOUNIGOIzgSg8s4JwPANCAQqv20wKIYAgaYEUMub4sZgXQhA5V2wY9CmBKDyprgxWBcCUHkX7Bi0KYGnKn/6AH+N2+9Ng+s0GLh1Ai8Oi1o+Wkbgjz2Bp3f4v3lxPmP/8gtlWnjjIU8c31ry9TOuo3I9pn1iYZER2FT+j9u8/LJ/+abybZf+/GeFgJQTwGqt0fRwd/nJLPrv4h021xotR/DnKIG7hKjDB22OjvY8+oPbaHnG1edoGYE/9gQuKsccxZ4rLI5EALV8pGzAlzoErir/VM5R0+swhtXeBPCrtr0zgPHrE/gyY0Elr08bI/QhgHl5H+4YtSUBqLwlbYzVh8Dt2w/uDv/lR8pfv/zqfDo9vPnN+VLpTnW4rQqF7q0DiW4gOv7KkErc+ghkiVE71HJJpnwHOb7TlbezXLgiaolEIIiKBDqoXBMNpKyhhDZKAgYq9x4a4P90f0tPFUhvRSUO3SszimYhgZTKD6462p1pkP30smxvdj7+vPwgN8jUnIDl/uVSDc4qw2Fj72Iuy5o5L41BPBGnodSyjcGMJe1udL/w3S7RBuNX8ZaZw1h6AgYqp+9Dwu2b+VeEyhoMKeuTh5ZKAgYql0Yi9UenHO6U4G/x9tLxbSycBsrUohkRSN0VAiYQWINAxVq+BiBEsQABqHyBJCKEHQJQOSSyPgGofP0cI0KoHBpYnwBUvn6OESFUDg2sTwAqXz/HiNBytRZoOgJYrTWaElDLR8sI/LEnEL/DH13wHV1uVbDP96p2XBX3UoRVN/aazbfY4enmfCcn6+GtTpvM+xXdxYxlxawipqcEKj4R92xR44m40VKPWj5aRuCPPQGo3J4pLI5GwKkcO4GOlhf4Y0kAtdySJmyNSQAqHzMv8MqSAFRuSRO2xiSwqRyT8jFTA6/MCKCWm6GEoWEJ3L59/5F+ofz1K3//8qGWYUx05zy9690uVW89THQf901Su3asZDcR+WjIYi1XboVlxXFYOwUcpF2WEruf8vD5LqrSPu78eAN0jYczj8hX+TZJH3Z5dPs758cl7iUs16DUPtfOcd1MLfTbP99/vPk8ZdlmLKfT6Y9Pv7ii/5Ai4uE+iTwZ0gbNmoESdih/mo/vqB0K1pmSpgeaGUI0FjoojR49E7wlzZyt0o4UV8Fx8lCTrONnlLkFXssLv2wJ5eVY8E9ej2xuGIkqrpwGJPyR/KS43BCas2g3rlwjUnuNHSmu3OO7QY3f4KLyQnUHwW34NPS9wtCMEf/MDVVbe56WO8c4Plc5Eq/VWd0suemBqJYbSN1hHRmQ8y0qaCrYWSeqB5cLK+Sea/lIIafZl2G8k05XNhQdvi8nKbgEaOa7JiWBxJ3QolTR9ZVeMi5J1lkOK/dxidvG2zJTJunmRi5Xn9vF5437vc9XX29Xnz//+H20REljJy6GpLcImZJdVAS8b4EdLiNNCFmV2PPH8z86tOQPrwIJO9HspPlTvY/OIUN/sgiYK/WIwYjK3XcseIHAMgQ6zFiWYYdAZiEAlc+SKfhZTgAqL2eHnrMQgMpnyRT8LCcAlZezQ89ZCEDls2QKfpYTgMrL2aHnLASg8lkyBT/LCUDl5ezQcxYC/wN6nATuMJFEpgAAAABJRU5ErkJggg==" alt="" />

二、对数据库表的操作

1.创建一张表

create table 表名(

字段名 类型(长度) [约束],

字段名 类型(长度) [约束],

字段名 类型(长度) [约束]

);

aaarticlea/png;base64,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" alt="" />

也可以在建表的时候添加索引:

CREATE TABLE `t7` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`url` varchar(40) DEFAULT NULL,
`crcurl` int(10) unsigned NOT NULL DEFAULT '',
PRIMARY KEY (`id`),
KEY `url` (`url`(15)),
KEY `crcurl` (`crcurl`),
KEY `url1` (`url`),
KEY `url2` (`url`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8

2.查看数据库表

创建完成后,我们可以查看数据库表

show tables;

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAANoAAAB5CAIAAADQ96jMAAAAAXNSR0IArs4c6QAAAAlwSFlzAAAOxAAADsQBlSsOGwAACApJREFUeF7tXTt2bTUMDWFimcGroHsVHVT0YQyMgAnAJFLSUVEwAtaiomFRhpPloKvItix/j67PflXiK+uztS35xOf6ffnHn//89fe/v//26wP+AYGzEXg82wHYBwI3BEBHsMERAqCjo2TAFdARHHCEAOjoKBlw5YvjyfqH5+eff/pxNhYvLy9k4unpiX4O43ykwRNS3qmnwXRyiuJPDodRpu9az7rqeBAlyZUwyJPUAOgaFtqdVPzJ4dAQ9X5T1tFRwW4II2fnxs7F2Z7wxnJ45dCxZgTem/W3nz8JFbS+eTONfw6z4uYbBuNGrLRmY9cuNn2hJymflFFKWpxygY+CQ/wRdYMkbjk84y2Nty1KMwtp4ofqGNCx1CpKpxDm40Z6kSs9dnnB4HpyftYCR7wJrZbTiI8kWdsTl+5/7ExtXN7kG5s1h3jUZshC36Ld2k1kf6cL7bJfTyiZQk8xXm986vSnkY6hiIZ2PCoTcTNKxjbWbid8onp1aqNqF1ffJM4DV0Kn56Oml+lIC5RXL0LH0omKvlrqYlAyyi65HVaUcSUIH4pxtQlw5o2Kt82T9bM+PMrQokxmSAzyoshXc7LdBCaJ8EQnMgaftEuDsU7dzyo6CivEzvADV0VYxVN0HEgVoZHzn1uv3aIYoT5B7Pgz+NfffF803NCUG6YU3YAAR2A/hAunMvrSVMjRPBGEuzQCxup4aYwQ/CoEyo8yqzyBHSDwADqCBI4QAB0dJQOugI7ggCMEQEdHyYAroCM44AgBScf9/rLqCOwJrmyWL1THCRyBylYEbqcyybPUePAwRIezwijGAyALcDis5M6+W5ngY544ldms+PvAeKIXm+ULzXoiV6C6GgGcWVdDhgnTEEB1nAYtFNcjADrWY4YZ0xAAHadBC8X1CICO9ZhhxjQEQMdp0EJxPQKgYz1mmDENAdBxGrRQXI8A6FiPGWZMQ0B+k9D4HfjaA9PkN5RDUGu+c2iMaxTOxngPc+K77cEB+/emF8c1Cp+cnvbqSJBZsFNkwk0gs+NcrD8XEbGHog4jfFws0cWen2vujY6v9S4IuP3zySHpk29L1adiqxnt1TEHQ3jHJPemifKRUJjTo+uPvUrK80ELLUQ4/Ne2eJNGLZ5sxb4oGEnH/ioSNIR6mdxi5j7ivuWaV0NTUyJS/DRmveiPDgVZETtIe7fpz5cx0jVi47+cYK9/xQjjEsupfEomclWtqrDFwkTrgIldW64LFbH1KTC4WYtq0RkzFVpeLcKgqzQk/dRjz9U/e13sxNbn9MF0nBFkvFE7rFg6/kBnyFxYCeSA2GAYq9rFOafk5e3vjs/Pz7/8///K5LBOPiLEWx/eaHjmSC0lTOyWuP6Yajx/POWWvCb3rzxMY8gihKT/8RawGK+up7iijM4X9TgRkHR04latG7myZOFr/AgVW6/VU+s/5N8ROKrjV4brRoEXEFiAwB3sHRegABNOEAAdnSQCbrwhADqCB44QAB0dJQOugI7ggCMEQEdHyYAroCM44AiB8a9QOAruAq64OrvvxxvVsR9DaBiGwO2QUDnbFdboMBrjycPJBfgcyCfzNYwXZykSh4SbFf+zUF1md7N8oVkvYw4MGRDAKxQGkCCyCAFUx0VAw4wFAdDRghJkFiEAOi4CGmYsCICOFpQgswgB0HER0DBjQQB0tKAEmUUIgI6LgIYZCwKgowUlyCxCAG/0LAJ6khkcEk4CFmqBAL66BQ54QqBx75i8NyfEFT6Km0hynEtu1nc8ZflufBl8vyNdGSPu2cmNx5eN5K43uRtE1zp6yq2C80Ic/Cij37+o1L/jI9yD05DmzVpKY7NWgFPuX1TuQQxc3GytN9Dr4lMG05EWq3L/4mYL+uIEGht+Ix2JbdRk+UWDgpSh7NFTDv0aRugBaGxg0HaXCOBt8LtM26ZON1bHTdFAWCcjADqenACY5wiAjuCDIwRAR0fJgCugIzjgCAHQ0VEy4AroCA44QgB0dJQMuDL4FQoAuhiBzU5cUR0X8wfmNARwv+MNnQX3Mo66D5If91MAO7yhh/sd77peoVnfdfrgvG8E8EaP7/xcyzs8ylwr386jBR2dJ+ha7oGO18q382hBR+cJupZ7oOO18u08WtDReYKu5R7oeK18O48WdHSeoGu5dzuzDnF7u5yEf33beWaEq+J4unigrMuvz8spyH+ojriuidZkLfWTXKRLYJJvPHAT/Eqt+AKPU/Ki3CNSC45d/p2Obk/i19/a05B7vZDUKuTy5+ZlPSM/NGt7fSbI6KUsakYcTTGY+zW5ehQ9JF/sgKIscXmL/mN60UQSNBpMWonj1eXteamNV5EnJ6us2wthUrLxUSZ3LyNvOsUOpbuu1EX6qFh4cv7kxiku3mc7IS4SWuivlc81fY5/LQ6dITdPb6QjXzpV8BUJ1BxJciJvNzG/Z7fC2mBr5eOQe+Jdvy+K/e+lY4jfQyQ5HgffksyjEli1opLFLMekWs218klGDox3Zac+Yumlo7GY0aoNSFn2ZEbNuhixkJcNMSVXI+21M6c8x62gOWZwPxfHxrsyUyEp748y333+VLWDUXbouY/Ebr0IfTJbHCAjWLo/IWrhDE0pOpnct4VB4T9XldSflG+gbG28xXwNqQtWJXgb3IoU5OYjsKhZzw8EFnZAAHTcIYvbxAA6bpPKHQIBHXfI4jYxgI7bpHKHQEDHHbK4TQyBjq/bxINA7hqBRzDxrvO3mfOPD68g5GY5veNw/gNDxO/Xi53NTgAAAABJRU5ErkJggg==" alt="" />

查看表的结构

desc 表名

aaarticlea/png;base64,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" alt="" />

3.删除一张表

drop table 表名

aaarticlea/png;base64,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" alt="" />

4.修改表

4.1 添加一列

alter table 表名 add 字段名 类型(长度) [约束]

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" alt="" />

4.2 修改列的类型(长度、约束)

alter table 表名 modify 要修改的字段名 类型(长度) [约束]

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" alt="" />

4.3 修改列的列名

alter table 表名 change 旧列名 新列名 类型(长度) [约束]

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" alt="" />

4.4 删除表的列

alter table 表名 drop 列名

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" alt="" />

4.5 修改表名

rename table 表名 to 新表名

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" alt="" />

4.6 修改表的字符集

alter table 表名 character set 编码

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" 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查看当前表的编码

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dU99hW+/qMk3QRJ5hEXT2CmQMEvYBnJpeRUPs6ZANVH9CuFPZIzUb2AVLLxM1tJJ6Mfni3BSdhfvMiGrQv2XjW/XewPm1nOjM+3GUsLB0zU9hcMJmtpjper/0Hi+DeMk+KLHMXXjzUvqKPvQXCa/dW+5SOgBkvTKbsm1Qt8iVE/Dr34vHxylHlplNodREcJXT/iLz4nVf5ed2qne/Y5pH4s81mZJjwegIPkDqE/fouBYANCcw8im+IBymBwDMJQNjPrBuiBoGQAISNBgGBDQlA2BsWFSmBQL+wH/DB4NTyvi3fqfBg7GwC+/w99kRy9GCTP+VuehQ8MRhtygxv0KPIjj+K1xCKr2445usAh0Hz+f/hxbtewtB14Vf0z17wHGD8WovJiuLkLx3otzkyMAdLWab379iZV1CmhHi+EbOu98l3+ttUXqeKlGmY16+mAnX5xNtBep06BpR/QoT8Ile1tygI19ogDQh+Nd5+nvGlTvuFXdbs6U02znGdhS3z1TteX5p9C188K1hh+V7d51qrWm/mQS8lV7F13RhbHhK2MC1eM9Rv6pUBnAhdEZiarps2aUUPnJbmMOMZqYfHgdwFTpN8KLzMeE5Ajy8LdCbfquAHBabbyYzqSCEZcCapkTF31vZMYXuMqN7UGfz0pS/SHiIaxbvu+fXG67YoI8X4kZIHKEwIZk9X86UWj3l6+cYJ0hLgTV+nLrH6eKvYigK12rytts8Qdnye0VXkeua7hHedF76pMOev/fr4wAMO4jF3S1NynirKypVXo16A6BCU3+SbykGDvaOBeT3It+p9RJZ5kjoMz+9IPMLLlcIOdshSQlPz5vVqCc0BpTbVE2afca+cgbvBeKonDm1fnImqmZILc2T826pxMcBTjrjeXb5xFfVp+wRVHySvFLZXaXEIJBDederOovnV+0m1QSmeicGM7EtxwFrbwUmY2OoxfclmVooq8AsH9Gk7E3B8uKta6H+OHazZpfy8ZmKVIhx0PRjP2XE7+roWtjneM1IOqyWv8TXCbFnTfiYevlpxIxSz0CePP7BPRRTRVrkRpfJDk6qrzcBbixIRHs3EdV+Z3IR9XvfMrmCy0uujGQy5Fnnx6xxpJh5b5Of82ea6Dae6dGEACDyOwLhezjiK0wotlurH4UbAIHAOge4PDr6Fd86OfQ4OeAEBECgEztixwRoEQOBkAhD2ycDhDgTOIABhn0EZPkDgZAIQ9snAvzwZWvoh4mr7Z/OCvy4CPc+xdV96LzBlniuKMd5/HtnFfnkM8WsD3nNgU2/mA/b8awn6AW/TI99SU2+KSCQY3OG0q50w6S4EenZsamv6UF70jbh+5MqniNTLXCEq8wmZ57eVpSdLYT+vXi8AU07eItiaBafK55r2JzrtiBNTzifw3W/n+1QeTVXr1WFFpPFWNqLtwHLrU8op46HtFf1zW5s9O/Ztk5kb2MidcNPRl98Vizvk8p/6ttm8WE0f2q4i2mbAkLCp4cTO5l03qZW5TXujsE/92iSn+N6Vq7rb/niXmHs1pdkEbTwYWHgQgSFhl7bT7dXacOZ4vU0R1sBjk2tvB9NJ8dvvB1UXob6WwJCwA2rjp774xnLcfrXkTWuEsHZCeNX49YDWE02HC0y5CYFVwr5JetUwYgWO3GbfTdtQdbUZdhrQI2zzWRTdspp0vClNKAOZNdn37HAj+kOsEmqT1JPa5vfwYor5uVow3uMJVTd12g6Df/+XH3ZIAzmAAAgwAj07NgCCAAjcnACEffMCITwQ6CEAYfdQwxwQuDkBCPvmBUJ4INBDAMLuoYY5IHBzAhD2zQuE8ECgh8Dn43HXf3/+Z9NzTvNZ7vFwVRgx/7PESC916Veyj996djy/Qd6m/R5O1hwRj5mUyNd0nbdT0MUcdCn5Ff2zjlDbz7yEp1F7fotHL06OKNMnAqnJJxN/a1dQvtx4X781qS8Z59cdO/kqhWiC8tZnhhqFLhw1vYPNByf9NtlPIqNhwriuNAUZv9aStKNz0RDIUeZFmgBOKzevvh5SM05RXxJ/pnkEitb4k3sDDTPXx1YIrf3WNP7bUbxJ23qZFDnzAX0LUlNrNuW8YvAIPb1Hebmba6jY1pKrSQBBeKku3K31XSeAEmpr/K2qFvWq8lnRb1WbH+6x+7pTd2F1g0qyiO3w3x4/i39xtfhgviSZ18vWQf+qTBcN8Ggc15M8FwWmV/l18QQntcxOYPZJuViyED/zixn7dMo4B3XgZejDM05B+EhSqOZv2tF+S735v6plb2fT17t3GIpzsNE9zgH/avqnDegIUnCj/SZY2pL91tQn4tZAnIzEKsBPCtQwScjBapW0oIcNCdsMKG7i/L4X2NF+zZW4G8qsieOn4hKJV3jzeoeQ+JllVu5kxws+iFOXPiaZF8aUPhGCF/S0/qtIR0rmGf8g7NaVhtpOWI81Wc2T90QwmHtpWonzAdxqpEdVXM93+bpDVmb/jOOkXZpvjPyiLk3mWHROn2QiWd1a34Tdp+oSny6kUJ05JpNbdf/PGDlhzAg9Hl5sJyOYE5I11/E7xLYuhhWb6tJKfRV2U18SvtZztabDTVXz7PDbZN8LgDYKQUkYD+7BkstTYJ+ja00qE7+QxCwX1ZrqRc3biomAx5mn0BQ/5yMOBfw/Tb88Wo9zE4Rpg/H32NNQwhAI3IbA0Idnt8kCgYAACHwgAGGjIUBgQwIQ9oZFRUogAGGjB0BgQwIQ9oZFRUogAGGjB0BgQwIQ9oZFRUogAGGjB0BgQwLyXfF1L+U9CN7j3h98EFuEeg4B7NjncIYXEDiVwIf/5xn3fLz4au7eG18/0jf/muVtHJDv0QlP7/NP/F1xHEHL0gYOp24ucLaAAI7iC6DCJAhcTgB/3XV5CRAACEwngB17OlIYBIHrCUDY19cAEYDAdAIQ9nSkMAgC1xOAsK+vASIAgekE/gd36UHi7W9I4wAAAABJRU5ErkJggg==" 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三、对数据库表记录进行操作(修改)

1.插入记录

insert into 表名(列名1,列名2,列名3……) values(值1,值2,值3……)

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" 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insert into 表名 values(值1,值2,值3……)

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" 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1.1 插入数据中文乱码问题解决办法

方式一:【不建议!】

直接修改数据库安装目录里面的my.ini文件的第57行

aaarticlea/png;base64,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" alt="" />

方式二:

set names gbk;

aaarticlea/png;base64,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" alt="" />

2.修改表记录

2.1 不带条件的

update 表名 set 字段名=值, 字段名=值, 字段名=值……

aaarticlea/png;base64,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" alt="" />

它会将该列的所有记录都更改

2.2 带条件的

update 表名 set字段名=值, 字段名=值, 字段名=值…… where 条件

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" alt="" />

3.删除表记录

3.1 带条件的

delete from 表名 where 条件

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" alt="" />

注意,删除后,uid不会重置!

3.2.不带条件的

先准备数据

insert into tbl_user values(null,’老王’,’666’);

删除操作

delete from 表名;

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" alt="" />

3.3 面试题

说说delete与truncate的区别?

delete删除的时候是一条一条的删除记录,它配合事务,可以将删除的数据找回。

truncate删除,它是将整个表摧毁,然后再创建一张一模一样的表。它删除的数据无法找回。

Delete操作演示:

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" 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Truncate操作演示

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" alt="" />

注意:delete删除,uid不会重置!而使用truncate操作,uid会重置[ThinkPad1] 

4.查询操作

语法:

select [distinct] *| 列名,列名 from 表名 [where条件]

4.1 简单查询

1.查询所有商品

select * from product;

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" 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2. 查询商品名和商品价格

select pname,price from product;

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" alt="" />

3.查询所有商品信息使用表别名

select * from product as[ThinkPad2]  p;

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" alt="" />

4.查询商品名,使用列别名

select pname as[ThinkPad3]  p from product

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3RsAB5Vo/FIy/6V/JkeRpGfuivYWNANRCgEMjjtGKdSY663gUnkeLycE1MLOXEWK5IDPgUKCgDAkUTSF+IkteH9JkqV15xZoWI7m+O8rY/wWmLHmcQLh+BnAtRlDdXOCR3eB09DucjE9kSMV+IbB3VQCDjO6LSYfInafV29AltXF6dLiFaAIESCGSb04ZONY3llUTaCEhe62IFlF9LYAoZQGCxBNJfoeqekVLmtLqGxpDr6KicCS3S48WOV7TuSI+z3KqZjLAttZ5MANFRXdym54Me0wmk7j3mCa1jzwP/q1yGGBWVzRiiHYfO2NKQPiDQQgUEMt7ysWmreCnFadOrVIAeIoJAHIF0pyXOSCniUfyZ0g7KgEDDBLKtHicyEus38NtEkqjePIEMc1pjpPVOLxXn9JZv3hJQEASIBJYZaXGLlWgkFAMBmUDObYxdkcX92K7MXZSyy4y08qYo5eeiGEEYECiKQOpD8EHrRsobGx2/FsXIKAxXHFPx8i3VoITp2xjjbvlE3Iktij7S46LM0ZUw+H7aSHNju2IkOFRLJoCFqEiEiLSR4FAtmUDqnNY237NN9qLnwMmaZm4Ac9rMQNEcncCy5rR0CcssiUhbpl16kGrJt3xkxEFBuAfbQEcQMBNY1gMDxMfcYTYQAAGFQJ69x94gSX/JuP50LmwGAiBwAYFFRFo3Yq+HewvAhCDQM4GFzGndXqcvLEc/8QP37nnsdqv7Qpx2App4/nYCyOiiTAIZ5rTEcOfYpkuZx0ZH4zK5QyoQiCeQfU4rntehy0Rxe0oZeo8oCQL1Esi8jVHEzHLeaVqIbbAZoxBDNCBGzjmtkuVm91s8f9vAgIMK6QTy7D1WNuLK3qv/iS40nr+ls0LJjggk7j02Zn36/NOdHFLmq0oZSpWirIj0uChzVC1MhtVjob/RkSjvdiCuHlf9pouqRwmEL4pAzoUo+e2K3MEoHlsUjsUJg0i7OLa9tZxnTqtTowRPOUTj+dveRh70jSaQ6rRBc0uHZzYfk5UFuWiDoSIIrCQuRBkJBnkya4FYvuq1KKTHcLZsBLLviKI7oXsFS9HQ6NhEb88GCw2BQAEEcq4ec3dVvo02LhTj+dsCxgZEKJVA9kibPfp5G/QWKJU95AKBGAI5tzHy/rMvKXkb9BaIAYM6IFAqgfxOW6qmkAsEGiEAp23EkFCjHwJw2n5sDU0bIQCnbcSQUKMfAnDafmwNTRshkPOBgSqQYGdSFWaCkA4CiLQYHiBQGQHDjih9r4LtxTEVnWdmMepVmbkgLggwAot4YKBksEiPS7YOZKMQQHpMoYQyIFASgex7j0tSDrKAQIMEEGkbNCpUapsAnLZt+0K7BgnAaRs0KlRqmwCctm37QrsGCcBpGzQqVGqbAJy2bftCuwYJwGkbNCpUapsAnLZt+0K7Bgmoe49v/Oh1upYlv4SpopeAu79A0AtZ2TstytvOL3q0VkR+0Sgmbt8cacW38kwsTS3dRbz/0eixMmd3m6I6r8JA8TO28xOQlMWYoDt0IQhUnx6LQTyZUdM9VhE1tEFb+dB20onBb9MZRrTgeVm5NwUSA0U8pmdM25STxl/lMefNFUWQ4Tqn5Iq2fo3nI57vMzIUJ4la28qHtmPjFnFejDbvIIkYl6jiIOCKtBRj6N6lp23KgDBKI6d5lPLcUW2+reSQDv1t/drOix4zziAoVyhZBYfW3rEeqm+EXbwyoEAiAdfrZuQI5u2GWTdo8CkhS060psx43f0yIReac4Y2np4Yp+g7pV28463nAmanpcRYhRofDSl25XUX7Se6sR39inAadD0ykrH5W2jLKWFWTCVsnCP0jRgqPftbFt2nXogSV3o+bkQwF74qh4IsGrobofRru47Qry82pWweyFvW/TzdY/PqC4+dYIjqXZgXoujGkAeWMqRsfxKNK704mnJMg5XJnnIhoGT4bjlFdJI7ElWC4qRDX0VOY/uKD4uubedt4ylUX68dlzJwu+4Ub67o2vxQvkICU6fHFSKCyCBQFgE4bVn2gDQg4CUAp/UiQgEQKIsAnLYse0AaEPASgNN6EaEACJRFAE5blj0gDQh4CcBpvYhQAATKIgCnLcsekAYEvATgtF5EKAACZRH4P7V4zyjLVX2KAAAAAElFTkSuQmCC" alt="" />

5.去掉重复值(按照价格)

select distinct(price) from product;

aaarticlea/png;base64,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" alt="" />

先准备数据:

insert into product values (null,'李士雪',38,null);

6.将所有的商品的价格+10进行显示

select pname,price+10 from product;

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" 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4.2 条件查询

1.查询商品名称为"左慈"的商品信息

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2.查询价格>60元的所有商品信息

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" 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3.查询商品名称含有"士"字的商品信息

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" 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4.查询商品id在(3,6,9)范围内的所有商品信息

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" 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5.查询商品名称含有"士"字并且id为6的商品信息

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" 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6.查询id为2或者6的商品信息

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" 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4.3 排序

1.查询所有的商品,按价格进行排序(升序、降序)

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" 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2.查询名称有"士"的商品信息并且按照价格降序排序

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" alt="" />

4.4 聚合函数

1.获得所有商品的价格的总和

aaarticlea/png;base64,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" alt="" />

2.获得所有商品的平均价格

aaarticlea/png;base64,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" alt="" />

3.获得所有商品的个数

aaarticlea/png;base64,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" alt="" />

4.5 分组操作

1.添加分类id (alter table product add cid varchar(32);)

2.初始化数据

update product set cid='1';

update product set cid='2' where  pid in (5,6,7);

1.根据cid字段分组,分组后统计商品的个数。

aaarticlea/png;base64,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" alt="" />

2.根据cid分组,分组统计每组商品的平均价格,并且平均价格大于20000元。

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" alt="" />

4.6 查询总结

select  一般在的后面的内容都是要查询的字段

from  要查询到表

where

group by

having  分组后带有条件只能使用having

order by

limit 0,100  它必须放到最后面

----------------------自己的总结:----------------------------

1.查询数据库中所有表名

  SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = '数据库名'

2.将字符串变为整数后比较大小

  SELECT   CONVERT('1111000',SIGNED) FROM t_unit_base_info  WHERE upUnitId = '10'

 3.截取与拼接字符串

aaarticlea/png;base64,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" alt="" />

 

  SELECT CONCAT(SUBSTR(MAX(meetingId),1,1),SUBSTR(MAX(meetingId), 2) + 1) FROM
t_meeting_base_info;

aaarticlea/png;base64,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" alt="" />

4.查看创表,视图或者其他存储过程与事件语句或者创建数据库语句

SHOW CREATE VIEW employee_exam_grade;
SHOW CREATE DATABASE exam;
SHOW CREATE event eventUpdateStatus;

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