网友您好, 请在下方输入框内输入要搜索的题目:

题目内容 (请给出正确答案)
单选题
以下语句执行后myTable的名称是()。 Dim myTable as DataTable myTable=New System.Data.DataTable()
A

Table1

B

Table2

C

TableN

D

Nothing


参考答案

参考解析
解析: 暂无解析
更多 “单选题以下语句执行后myTable的名称是()。 Dim myTable as DataTable myTable=New System.Data.DataTable()A Table1B Table2C TableND Nothing” 相关考题
考题 考虑如下数据表和查询,如何添加索引功能提高查询速度?( )Create table mytable(Id int,Name char(100),Address1 varchar(100),Address2 varchar(100),Zipcode varshar(10),Sity varchar(50),Province varchar(2))Select id, varcharFrom mytableWheA.给Zipcode添加全文的索引B.给Name添加索引C.给Id添加索引,然后给Name和Zipcode分别添加索引D.给id添加索引

考题 以下语句获取表中第1行第1列(FirstName列)的数据,其中正确的语句是()。 A.myTable.Rows(0).Item("FirstName")B.myTable.Rows(1)("FirstName")C.myTable.Rows(0)(1)D.myTable.Rows(0).Item(0)E.myTable.Rows(0).Item(1)

考题 有如下语句,执行后该段语句的循环次数是()。 Dim s,I,j as integer For I =1 to 3 For j=3 To 1 Step-1 S=I*j Next j Next I A. 3B. 4C. 9D. 10

考题 下列声明并创建Connection对象的语句,正确的是()。 A、Dim ADOcn As ConnectionB、Dim ADOcn As New ConnectionC、Declare ADOcn As New ConnectionD、Declare ADOcn As Connection

考题 已知ds1、ds2分别代表两个不同的DataSet对象。其中ds1已包含名为“Customer”的DataTable对象,且该DataTable对象被变量dt_Customer引用。已知dt_Customer表有300条记录,则执行下列语句后,新的数据表new_dt_Customer中包含D_条记录。 DataTablenew_dt_Customer=dt_Customer.Copy();A.0B.100C.200D.300

考题 将查询学生的结果放在数组MyArray中的SQL语句是: SELECT*FROM学生表WHERE籍贯=’北京’_________ 上面空缺的短语是( )。A. INTO CURSOR MyCumorB. TO ARRAY MyArrayC. INTO ARRAY MyArrayD. INTO TABLE MyTable

考题 执行语句Dim X,Y As Integer后( )

考题 执行以下语句后显示结果为______。 Dim x As Integer If x Then Print x Else Printx-1A.1B.0C.-1D.不确定

考题 以下语句执行时,从键盘上输入Zhang,执行结果是______。 Dim a As String a=InputBox("Input","","Name") Print aA.InputB.NameC.ZhangD.空字符串

考题 执行以下语句后显示结果为______。 Dim x As Integer If X Then Print x Else Print X-1A.1B.0C.-1D.不确定

考题 假定AB为一个类,则执行 “AB *s=new AB(a,5);”语句时得到的一个动态对象为()A、 sB、 s-aC、 s.aD、 *s

考题 要删除mytable表中的myindex索引,可以使用()语句。A、DROP myindexB、DROP mytable.myindexC、DROP INDEX myindexD、DROP INDEX mytable.myindex

考题 以下语句执行后,myDataSet中增加的表的名称是()。 dim myDataSet as new DataSet() myDataSet.Tables.Add()A、Table1B、Table2C、TableND、Nothing

考题 myTable=New System.Data.DataTable(),myTable的名称是Table1。

考题 以下语句执行后myTable的名称是()。 Dim myTable as DataTable myTable=New System.Data.DataTable()A、Table1B、Table2C、TableND、Nothing

考题 以下语句获取表中第1行第1列(FirstName列)的数据,其中错误的语句是()。A、myTable.Rows(0).Item("FirstName")B、myTable.Rows(0)("FirstName")C、myTable.Rows(0)(1)D、myTable.Rows(0)(0)E、myTable.Rows(0).Item(0)

考题 下列命令不能执行的是()。A、SELECT * FROM [select]B、SELECT * FROM @MyTableC、SELECT * FROM [MyTable]D、SELECT * FROM MyTable

考题 如果不使用Option Base语句,则下面数组说明语句等效的有()A、Dim A(0to8,0to3)B、Dim A(1to8,1to3)C、S Dim A(7,2)D、Dim A(8,3)

考题 在SQL Server中,下列标识符可以作为本地临时表名的是()。A、##MyTableB、@@MyTableC、@MyTableD、#MyTable

考题 You are creating a DataTable. You use the following code segment to create the DataTable. (Line numbers are included for reference only.) 01 Dim dt As New DataTable("Products") 02 dt.Columns.Add(New DataColumn("Price", _ GetType(Decimal))) 03 dt.Columns.Add(New DataColumn("Quantity", _ GetType(Int32))) 04 Dim dc As DataColumn = New DataColumn("Total", _ GetType(Decimal)) 05 dt.Columns.Add(dc) You need to ensure that the Total column is set to the value of the Price column multiplied by the Quantity column when new rows are added or changed. What should you do? ()A、Add the following code segment after line 05. dc.ExtendedProperties("Total") = "Price * Quantity"B、Add the following code segment after line 05. dc.Expression = "Price * Quantity"C、Write an event handler for the DataTable's TableNewRow event that updates the row's Total.D、Write an event handler for the DataTable's ColumnChanged event that updates the row's Total.

考题 单选题You are creating a DataTable. You use the following code segment to create the DataTable. (Line numbers are included for reference only.) 01 Dim dt As New DataTable("Products") 02 dt.Columns.Add(New DataColumn("Price", _ GetType(Decimal))) 03 dt.Columns.Add(New DataColumn("Quantity", _ GetType(Int32))) 04 Dim dc As DataColumn = New DataColumn("Total", _ GetType(Decimal)) 05 dt.Columns.Add(dc) You need to ensure that the Total column is set to the value of the Price column multiplied by the Quantity column when new rows are added or changed. What should you do? ()A Add the following code segment after line 05. dc.ExtendedProperties(Total) = Price * QuantityB Add the following code segment after line 05. dc.Expression = Price * QuantityC Write an event handler for the DataTable's TableNewRow event that updates the row's Total.D Write an event handler for the DataTable's ColumnChanged event that updates the row's Total.

考题 单选题You are creating a DataTable. You use the following code segment to create the DataTable. (Line numbers are included for reference only.) 01 DataTable dt = new DataTable(“Products”); 02 dt.Columns.Add(new DataColumn(“Price”, typeof(decimal))); 03 dt.Columns.Add(new DataColumn(“Quantity”, typeof(Int32))); 04 DataColumn dc = new DataColumn(“Total”, typeof(decimal)); 05 dt.Columns.Add(dc); You need to ensure that the Total column is set to the value of the Price column multiplied by the Quantity column when new rows are added or changed. What should you do? ()A Add the following code segment after line 05. dc.ExtendedProperties[Total] = Price * Quantity”;B Add the following code segment after line 05. dc.Expression = “Prince * Quantity”;C Write an event handler for the DataTable's TableNewRow event that updates the row's Total.D Write an event handler for the DataTable's ColumnChanged event that updates the row's Total.

考题 判断题myTable=New System.Data.DataTable(),myTable的名称是Table1。A 对B 错

考题 单选题以下语句执行后myDataSet中增加的表的名称是()。 Dim myDataSet as new DataSet() myDataSet.Tables.Add()A Table1B Table2C TableND Nothing

考题 多选题You issued the following command:        SQL DROP TABLE MYTABLE;        SQL SHOW RECYCLEBIN  The following output is returned:        ORIGINAL NAME RECYCLEBIN NAME               OBJECT TYPE      DROP TIME        ------------- ------------------------------ --------------- --------------------        MYTABLE BIN$04LhcpndanfgMAAAAAANPw==$0     TABLE           2005-01-13:20:11:31  You want to drop the table, MYTABLE, from the Recycle Bin. Which two commands can you issue to accomplish the desired task?()ADROP TABLE MYTABLE PURGE;BPURGE RECYCLEBIN;CPURGE TABLE MYTABLE;DPURGE TABLE BIN$04LhcpndanfgMAAAAAANPw==$0;

考题 单选题下列命令不能执行的是()。A SELECT * FROM [select]B SELECT * FROM @MyTableC SELECT * FROM [MyTable]D SELECT * FROM MyTable

考题 单选题在SQL Server中,下列标识符可以作为本地临时表名的是()。A ##MyTableB @@MyTableC @MyTableD #MyTable