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1、实验2MySQL数据库对象管理1 .实验目的理解数据字典、表、索引、视图的作用，掌握数据字典的操纵方式，掌握库、表、索引、视图的操作方法。2 .实验内容【实验2-1】查看INFORMATlON-Schemaschemata表中的信息。【实验2-2】查看INFoRMATIoNSCHEMA.TABLES表中的信息。【实验2-3】查看INFoRMATloN_SCHEMA.COLUMNS表中的信息。【实验2-4】查看INFORMATIon_schema.statistics表中的信息。【实验2-5】查看INFORMATION_SCHEMA.CHARACTER_SETS表中的信息。【实验2-6查看INF
2、0RMATI0N_SCHEMA.C0LLATI0NS表中的信息。【实验2-7使用CREATEDABASE语句创建school数据库。【实验2-8】将school数据库的字符集设为utf-8【实验2-9】在school数据库下创建stu,info表,包括stunoVarCharQ0）、Stunamevarchar(8)xStubirdate、Stuageint6U建表course,包括cournovarchar(3)xcournamevarchar(10).schyeardate,creditint;仓(J建Stuandcour表，包括stunoVarchar(IO)xcournovarchar
3、(3)xgradeint0【实验2-10】使用SHOW、DESCRlBE语句查看所建的表。【实验2-11使用ALTERTABLE语句将Stuinfo表的表名改为Stuinfo,并且增加StugenderVarChar(4)字段，将course表中courno字段的类型改为varchar(5)0【实验2-12将前边建的表复制到test数据库中，如果没有test数据库就新建一个。【实验2-13删除test数据库中的CoUrSe表。【实验2-14】创建StUinfO表上StUno的索引。【实验2-15创建Stuandcour表上Stuno字段和courno字段上的多列索引。【实验2-16】删除创建的
4、索引。【实验2-17】创建StUinf。表上的单源视图。【实验2-18仓U建Stuinfo表和Stuandcour上的多源视图，包含stunoxStunamexcournoxgradeo【实验2-19分别通过访问information.SChema的views表和tables表，查看已经创建好的视图吏用DESCRlBE语句查看已经创建好的视图。【实验220】使用SELECT语句查询创建好的视图。3 .实验步骤及结果截图MKQI57CrtvredGrWCSwiI-OircOr9：HEM-XA电 IlydM(XVdb 二*yg，&raw : c,)30JVSSQLJTH Mj4Ql 7 frv*f
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13、Un4d CA8OSO；O.(IOWj-346277989o1q123456789o123456789q123323367689o 12203656253 666666666666777 777 7 77 7WCOBS6999999443 111 Iiiiiiiiiiiiiiiiiiiiiiii 222eeeeeeeceeeeeeeceee=2eeeeeeee:2eeeeeeexeeeeeeeMySQl5.7CommandIineCfient-Unicodeutfl6croatianciut116utfl6unicode_520ciUtfI6uf16.Viotnflgqpjnufl6utfl6
14、1ejeeral.ciutfl61eutfl61ebinutf161ecpl256,general.cicp!256cpl256bincpl256cpl257lithuanian.cicpl257c1257-blncp!257cp1257-general-cicpl257uf32-general-ciutf32uf32binuf32utf32uniCOde_ciutf32utf32_iXelandiJCiutf32utf32_latvian_ciutf32IHf32Olmnian-Ciutf32utf32-slovenianciutf32utf32jxlBhciutf32utf32.eston
15、ianciutf32uf32spanish_ciuf32IKf32_qSdiSh_ciuf32utf32turkish_ciutf32utf32czechciuf32utf32danishciuf32utf32.1ithuanianciutf32utf32slovak.ciutf32utf32.,spanish2ciutf32utf32oDaLCiutf32utf32prsian_ciinf32utf32_sprarno_ciutf32utf32hungarian_ciutf32utf32_sinhala_ciuf32f32_gran2ciIKf32utf32croatianciutf32ut
16、f32unicode520ciutf32utf32_vietnameseciutf32binarybinarygeostd8eeneraLCigeostd8geosd8btngeostd8cp932_japanese_cicp932cp932.bincp932wcjpoK_japan。SQrCiwcj(xneucjpmsbineucjposgbl8030chineseci的18030gb!8030,bingb18030gb18030unicode_520-cibl803022rowsinset(0.00sec),sqlalterdatabaseschooldefaultcImxacterset
17、utf-defaultcollateutf8.ieneral.ci:eryOK.1rowaffected(0.Olsec),sqlcreatetablestunfo(-stunoVarChar(IJ,Stuiuunevarchar(8)l-stubirdate.-stuageInt-:IeryOK.0rowsaffected(0.05sec)oysqlCrRaTetablesumfo(- stunovarchor(10).、3tunamevrchar(8).- stubirdate,- StUaeeint- ):QuervOK.Orovsaffected(O.05sec)nysqlcreate
18、tablecoursecoumoVarChal(3).- couma*evarchari10).- schyeardate.- creditint- );3ueryOK.Orowsaffected(0.04sec)ysqlcreatetablestuaudcour(一stunovarchar(10).- coumovarchar(3)tgradeinteryOK.0rovrsaffected(0.04sec)ysqldescribestu-nfo;FieldTyPeNullKeyDefaultExtraLLLL ssstunova*char(10)YESunaseVarCharYESSUlbi
19、rdescribecourse:FieldTypeNullKeyDefaultExtracoumoc。UrnaEeschyearcreditvarchar(3)Varchar(IO)dateint(ll)YESYESYESYESNLLLXVLLMLLNLU4rowsinset(0.OOsec)nysqldescribeStuandcour:FieldTyNullKeyDfaulExtraMLL NllL NULL3*un0Varchir(IO)YEScournoVarChalYESgradeint(ll)YES-=一=一-Irowsinset(O.OOsec)MySQtS.7Commandli
20、neCint-UnicodeStUInfoCREATETABLEstuinfo(；stunoVdrchar(IO)DEFAULTSiULLstunaxvarcharshcreatetablecourse.TableCreateTablecourseCRETETABLEcourse(cournovarchar(3)DEFAILTNVLLcou,11diueWChBE(IO)DEFAULTNULL.schyeardateDEFA11TNllL,creditint(ll)DEFALLTNllLENGINEInnoDBDSFALXTCHARSETHfS1 rowinset(O.OOsec)ysqlsh
21、ocreatetablesrandccur:ERROR1146(42S02):Table*school.Stuandcour,doesn*tnysqlshwcreatetableStuandcoui-:TableCreateTableSxuandcourCREATETABLEswndeourIslunovarchar10)DEFA11TNllL,cornovarchar(3)DEFAULTNVLLgrad。in(ll)DEFAULTNULL，ENGINE-ImioDBDEFAllTCHARSEEf8lrorinSet00SeC)三ysqluseschool;ysqlalrtableStUnfO
22、一renameStuinfc:JueryOK,Orosaffected(O.06sec)jrsqlaltertableStuinfoaddStueendorvarchar(4);JuoryOK.Oaffect(0.06q)Iecords:ODuplicates：OWarnings：Oiyqlal:BrtabUcourse-modifycournovarchar(5);)ueyOK.OrowsaffectedcrAtedatAb5etest.er,0&1rowaffected(O.Olsec)BnQIremit*Vftbleschool.Stuinfotot*8t.itunfo.school.e
23、ouretotest,course,school.SttmndcourtotBT.Stuandcour:aeryOK.Orsaffectedusetest:)aibasechangedysqldroptablecourse:JueryOK.0rarsaffected(0.01sec)Btsqldescribecourse;KROR1146142S02):Table,test.course,doesntexistBrsqlcreateindexindex-stuno-onStuinfo(Stuno)JueryOK,Orarsaffected(O.03sec)Iocords:ODuplicates
24、:OWarnings:OBySqDcreateindexindex-sunoandcourno-onstundcr(stuno.courno):JueryOK.Orowsaffected(0.02sec)Acords:ODuplicates:OWarnings:O,sqldropindexIndeUtimo:IROR1064(42000):YouhasanerrorinyorSQLsyntax：,sqldropindexndex.stuno- ontest;【ROR1146(42S02):Tablvtest.tstvdoesntexist,sqldropindexindex.stuno- on
25、stulnfo:eryOK.Orowsaffected(0.02sec)Kords:ODuplicates:OYarniogs:O,sqldropindextndex.3tUnoandcourno- 3tandcour:ryOK.OroCXazorrlacvwviw.stuinfoas-select-fromstiofo:TOK.Orosaffct”(0.02se),sqlcreateviewview-stuinfo-stuancouras一,selectstulnfo.stuno,stuinfo.stunaae,Stuandcour.COUmOvStuandcour.grade-frosti
26、nfo,Stuandcour一、EIerestuinfo.Stuno=STuandcour.suo:eryOK.Orowsaffected(0.02sec)ysql,selectfroavicw-stuinfo:InPtySet(0.00C)def“4afa网0iG3S40MUMElr*wcla9mVlMUWUMU工二I*tveorhlcityfXA0131O20砌0BlDdfg：Idcocnxy5010010WU&，53C4o-hl0co;n:rLvu/6553d0Mll019S*CwvlMlt*mj5t*)0WCmrno)此*lKfiM*aasvharOXUtdtt*YE5N11L*Kaag*o(i2MU.4,YF511L卬dnc*havtiffu1nffl.rsitt10.00M,5:v-l.*w*ircrdtcrt靛xXviv_s:uinfo_atjuct.Fld2eX：lKXCAtEvieatvaicIi,1CYSUtnarWrtBf，*VSMlJceovarctMa3jYESMU.E田TSXnJ.:rmv，rXUMXI,sqlSeleCtfrovievstuinfo_5tuancor:xvset(0.00sec)
