MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

SQL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How do you display the number of rows?
A
ASC
B
FILTER
C
COUNT
D
SELECT
Explanation: 

Detailed explanation-1: -Just click the column header. The status bar, in the lower-right corner of your Excel window, will tell you the row count. Do the same thing to count columns, but this time click the row selector at the left end of the row. If you select an entire row or column, Excel counts just the cells that contain data.

Detailed explanation-2: -In SQL, you can make a database query and use the COUNT function to get the number of rows for a particular group in the table. Here is the basic syntax: SELECT COUNT(column name) FROM table name; COUNT(column name) will not include NULL values as part of the count.

Detailed explanation-3: -SQL COUNT() function counts the total number of rows present in the database.

Detailed explanation-4: -How to count rows – count (*) and Java. The SQL Count() function returns the number of rows in a table. Using this you can get the number of rows in a table.

Detailed explanation-5: -Select a blank cell and type the =COUNTA function including the range of cells that you want to count. For example, we used =COUNTA(A2:A11). Just hit enter, and the COUNTA function will automatically count the cells that are not blank. You now have the total number of cells that have values in it!

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