考题
Exhibit:BULK INSERT Ezonexam.dbo.employeesFROM ‘tk\africe\fubar512.txt’WITH DATAFILETYPE = ‘char’,FIELD/TERMINATOR = ‘\t’,ROWTERMINATOR = ‘\n,’TABLOCKYou work as database administrator at Ezonexam.com. You handle one SQL Server 2000 computer.How should you improve the performance of the query in the exhibit above?A. Extend the BULK INSERT statement with the BATCHSIZE option set it to equal to 5 percent of the number of rows to be loaded.B. Extend the BULK INSERT statement with the BATCHSIZE option set it to equal to 10 percent of the number of rows to be loaded.C. Extend the BULK INSERT statement with the ROWS_PER_BATCH option set it to equal to 5 percent of the number of rows to be loaded.D. Extend the BULK INSERT statement with the ROWS_PER_BATCH option set it to equal to 10 percent of the number of rows to be loaded.E. Insert a line before the BULK INSERT statement that drops the indexes for the customers table. Insert a line after the BULK INSERT statement that recreates the indexes for the customers table.F. The TABLOCK option should be removed.G. The ROWTERMINATOR line should be removed.
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b)main(){union{ /*定义一个联合*/int i;struct{ /*在联合中定义一个结构*/char first;char second;}half;}number;number.i=0x4241; /*联合成员赋值*/printf("%c%c\n", number.half.first,mumber.half.second);number.half.first='a'; /*联合中结构成员赋值*/number.half.second='b';printf("%x\n", number.i);getch();}
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已知a = np.arange(12), c = a.view() ,那么 “c is a” 的结果为True。
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要隐藏view组件中的内容,应该将view组件的()属性设置为true?A.hiddenB.displayC.heightD.width
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要隐藏view组件中的内容,应该将view组件的()属性设置为true。A.hiddenB.displayC.heightD.width
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如下代码中,statement语句在语法和逻辑上都正确的是 try{ if(number2 ==0) throw number1; ...... } catch(statement){ cout e endl; }A.int eB.int eC.int* eD.const int e
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要隐藏view组件中的内容,应该将view组件的()属性设置为true?A.hiddenB.widthC.displayD.height
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已知a = np.arange(12) c = a.view() 那么c is a 的结果为True.
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如下代码中,statement语句在语法和逻辑上都正确的是 try{ if(number2 ==0) throw number1; ...... } catch(statement){ cout << e << endl; }A.int eB.int eC.int* eD.const int e
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7、如下代码中,statement语句在语法和逻辑上都正确的是 try{ if(number2 ==0) throw number1; ...... } catch(statement){ cout << e << endl; }A.int eB.int eC.int* eD.const int e