[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fC85pXYfDLMAy8aYX6WdcHQR9ZLVBomYl7QNc0XFvfEM":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2024-04-23 10:37:15",139793391,[8,9,10,11],"ALTER TABLE user CHANGE name username","ALTER TABLE user CHANGE name username VARCHAR(20)","ALTER TABLE user MODIFY name username VARCHAR(20)","ALTER TABLE user MODIFY name username",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},52,"472bf004c0114f31d2a3fc77b50f426f","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff66574b45f5801a0a662dd75e85c7355.jpg","数据库程序设计（MySQL）","work_34520930","第八周作业","【单选题】下列选项中,用于将user表中name字段改username,但数据类型保持不变的是",[21,33,43,53,62,72,81,84,94,103],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2024-04-23 10:37:10",139793382,[26,27,28,29],"第一条记录","最后一条记录","最近操作的一条记录","所有记录","【单选题】下列代码是将Book表中( )的数量增加10.UPDATE Book SET 数量 = 数量+10","v1",0,{"answer":34,"createTime":35,"id":36,"options":37,"question":42,"source":31,"type":32},[],"2024-04-23 10:37:11",139793383,[38,39,40,41],"INSERT","SET","SELECT","HELP","【单选题】在对UPDATE或DELETE语句使用WHERE子句前,应该先用( )进行测试,保证它过滤的是正确的记录,以防编写的WHERE子句不正确",{"answer":44,"createTime":45,"id":46,"options":47,"question":52,"source":31,"type":32},[],"2024-04-23 10:37:12",139793384,[48,49,50,51],"CREATE BASE shop","CREATE DATABASE shop","ALTER DATABASE shop","CREATE TABLE shop","【单选题】下面选项中,哪个可以正确创建一个名称为shop的数据库",{"answer":54,"createTime":45,"id":55,"options":56,"question":61,"source":31,"type":32},[],139793385,[57,58,59,60],"DROP TABLE shop","DELETE DATABASE shop","DROP DATABISE shop","DELETE FROM DATABASE shop","【单选题】下列删除shop数据库的sql语句中,正确的是",{"answer":63,"createTime":64,"id":65,"options":66,"question":71,"source":31,"type":32},[],"2024-04-23 10:37:13",139793387,[67,68,69,70],"在创建表之前,应该先指定需要进行操作的数据库","在创建表时,必须指定表名、字段名和字段对应的类型","在创建表时,必须指定字段的完整性约束条件","CREATE TABLE语句可用于创建表","【单选题】下列关于表的创建的描述,错误的是",{"answer":73,"createTime":64,"id":74,"options":75,"question":80,"source":31,"type":32},[],139793389,[76,77,78,79],"DELETE FROM TABLE 表名 DROP 字段名","DELETE TABLE 表名 DROP 字段名","ALTER TABLE 表名 DROP 字段名","DELETE TABLE 表名 字段名","【单选题】下列选项中,删除字段的基本语法格式是",{"answer":82,"createTime":5,"id":6,"options":83,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":85,"createTime":86,"id":87,"options":88,"question":93,"source":31,"type":32},[],"2024-04-23 10:37:16",139793392,[89,90,91,92],"INSERT、DELETE、UPDATE和SELECT语句","CREATE、DROP、ALTER和TRUNCATE语句","COMMIT、ROLLBACK和SAVEPOINT语句","GRANT、REVOKE和FLUSH语句","【单选题】在MySQL中,如何进行数据的增删改查操作",{"answer":95,"createTime":86,"id":96,"options":97,"question":102,"source":31,"type":32},[],139793394,[98,99,100,101],"UPDATE customers SET email = 'jane@example.com' WHERE id = 1","UPDATE customers (email = 'jane@example.com') WHERE id = 1","UPDATE customers (id = 1, email = 'jane@example.com')","UPDATE customers SET email = 'jane@example.com' AND id = 1","【单选题】下面哪个命令可以更新&quot;customers&quot;表中ID为1的记录的&quot;email&quot;字段为&quot;jane@example.com&quot;",{"answer":104,"createTime":86,"id":105,"options":106,"question":111,"source":31,"type":32},[],139793396,[107,108,109,110],"DELETE FROM customers WHERE id = 1","DELETE customers WHERE id = 1","DELETE customers (id = 1)","DELETE customers (id = 1) FROM customers","【单选题】下面哪个命令可以从&quot;customers&quot;表中删除ID为1的记录"]