[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fG4ZIXs5OsFd9FF1vXkEePNcBgY8n6mdYFTnOThr3nbM":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2023-11-18 04:47:26",106415657,[8,9,10,11],"UPDATE TABLE ReaderType SET LimitDays=40 WHERE Typename='企业职工'","UPDATE ReaderType SET LimitDays=40","UPDATE ReaderType SET LimitDays=40 WHERE Typename='企业职工'","UPDATE TABLE ReaderType SET LimitDays=40",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},15,"0043d5433fd26fd1c70c689c2639efce","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0dae5231eef5a894c924a1ac5e95f515.png","数据库原理及应用","669ca8434cfb4b12b2fdbd3ec9075871","数据增、删、改和约束","更改ReaderType中的数据,将"企业职工"的借阅天数改为40天,正确的语句是",[21,33,38,43,52,55,64,71,80,89],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2023-11-18 04:47:25",106415647,[26,27,28,29],"INSERT INTO","UPDATE","DELETE","SELECT","插入语句命令是","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":37,"source":31,"type":32},[],106415649,[26,27,28,29],"更新数据命令",{"answer":39,"createTime":5,"id":40,"options":41,"question":42,"source":31,"type":32},[],106415651,[26,27,28,29],"删除数据命令",{"answer":44,"createTime":5,"id":45,"options":46,"question":51,"source":31,"type":32},[],106415654,[47,48,49,50],"INSERT INTO ReaderType VALUES(1,"企业职工",5,30)","INSERT INTO ReaderType VALUES(1;"企业职工";5;30)","INSERT INTO ReaderType VALUE(1,"企业职工",5,30)","INSERT INTO ReaderType VALUE(1;"企业职工";5;30)","向表ReaderType中插入数据,正确的是",{"answer":53,"createTime":5,"id":6,"options":54,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":56,"createTime":5,"id":57,"options":58,"question":63,"source":31,"type":32},[],106415659,[59,60,61,62],"DELETE ReaderType","DELETE ReaderType WHERE Typename='企业职工'","DELETE TABLE ReaderType WHERE Typename='企业职工'","DELETE TABLE ReaderType","删除ReaderType表中"企业职工"的信息,正确的语句是",{"answer":65,"createTime":5,"id":66,"options":67,"question":70,"source":31,"type":32},[],106415663,[62,59,68,69],"DROP TABLE ReaderType","DROP ReaderType","删除ReaderType表中所有数据,正确的命令是",{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":31,"type":32},[],106415665,[75,76,77,78],"ALTER TABLE ReaderType ADD CONSTRAINT primary key (TypeID)","ALTER TABLE ReaderType ADD CONSTRAINT PK_ReaderType(TypeID)","ALTER TABLE ReaderType ADD PK_ReaderType primary key (TypeID)","ALTER TABLE ReaderType ADD CONSTRAINT PK_ReaderType primary key (TypeID)","将表ReaderType中的TypeID设置为主键,正确的命令是",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":31,"type":32},[],106415669,[84,85,86,87],"ALTER TABLE ReaderType ADD CONSTRAINT UQ_ReaderType unique (Typename)","ALTER TABLE ReaderType ADD CONSTRAINT unique (Typename)","ALTER TABLE ReaderType ADD CONSTRAINT UQ_ReaderType (Typename)","ALTER TABLE ReaderType ADD UQ_ReaderType unique (Typename)","为ReaderType表中的Typename添加唯一约束,正确的语句是",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":31,"type":32},[],106415674,[93,94,95,96],"ALTER TABLE Reader ADD CONSTRAINT check (Email like '%@%')","ALTER TABLE Reader ADD CONSTRAINT CK_Reader (Email like '%@%')","ALTER TABLE Reader ADD CONSTRAINT CK_Reader check (Email like '%@%')","ALTER TABLE Reader ADD CK_Reader check (Email like '%@%')","为表Reader中的Email字段添加检查约束,要求该字段需要有"@"符号,正确的命令是"]