以下语句表示_____连接。（填汉字）SELECT Reader.*,ReaderType.* FROM Reader INNER JOIN ReaderType ON Reader.TypeID=ReaderType.TypeID

以下语句从__个表中进行查询。（填数字）SELECT Reader. *,ReaderType.* FROM Reader, ReaderType where Reader.TypeID=ReaderType.TypeID

智慧职教: 更新borrow表每条借书记录的eprdate(到期日期)。 borrow  eprdate=timestampadd(day,(select maxdays from readertype where typeID in (select typeID from reader where reader.readerID=.)),brwdate);

删除ReaderType表中所有数据，正确的命令是 A: DELETE TABLE ReaderType B: DELETE ReaderType C: DROP TABLE ReaderType D: DROP ReaderType

下列（ ）可以实现从数据表tb_book中查询publishid和typeid字段的值，插入到数据表tb_book2中。 A: INSERT INTO tb_book2(publishid,typeid) SELECT publishid, typeid FROM tb_book; B: INSERT FROM tb_book2(publishid,typeid) SELECT publishid, typeid FROM tb_book; C: INSERT INTO FROM tb_book2(publishid,typeid) SELECT publishid, typeid FROM tb_book; D: INSERT INTO tb_book(publishid,typeid) SELECT publishid, typeid FROM tb_book2;

删除ReaderType表中“企业职工”的信息，正确的语句是

以下代码是为了在界面中动态生成商品类型的下拉列表，下划线处应该填写( ) A: "".$rs[$i]['typename'].""; B: "".$rs[$i]['typeid'].""; C: "".$rs[$i]['typeid'].""; D: "".$rs[$i]['typename']."";

往reader表中插入一个学生 ’2004060003’，’李亚茜’，3（ ）。 A: INSERT into ReaderVALUES('2004060003','李亚茜',3) B: INSERT into Reader(RID,Rname,TypeID)VALUES('2004060003','李亚茜',3) C: INSERT into Reader(RID,Rname,TypeID)VALUES('李亚茜','2004060003',3) D: INSERT into Reader(RID,TypeID,Rname)VALUES('2004060003','李亚茜',3)

下列（）可以实现从数据表tb_book中查询publishid和typeid字段的值，插入到数据表tb_book2中。

如下是C/C++关键字（keyword）的是（） A: volatile B: typeid C: try D: abort E: mutable F: cast