Advertisements
Advertisements
Question
Which function is used to display the total number of records from a table in a database?
Options
sum(*)
total(*)
count(*)
return(*)
Solution
count(*)
APPEARS IN
RELATED QUESTIONS
______ keyword is used to find out the number of values in a column?
Which method is used to get the row-id of the last modified row?
The MAX () function finds the
What will be the output of the following SQL statement?
SELECT DAY NAME (2022-04-08)
Assertion (A): COUNf function ignores DISTINCT
Reason (R): DISTINCT ignores the duplicate values.
Which of the following is not an aggregate function?
Which command is used to delete a table? (in SQL)
Identify Single Row function of MySQL among the following.
What will be returned by the given query? Select round(23456.1234, -2) = ______.
What will be returned by the given query? select mid("Computer", 2, 4) = ______.
What will be returned by the given query? select day of year('2015-02-10') = ______.
What will be returned by the given query? select power(3, 2) = ______.
What will be returned by the given query? Select length(trim("ABC Public School")) = ______.
Name a function of MySQL used to give position of the first occurrence of a string2 in string1.
What will be returned by the given query? SELECT MID('BoardExamination', 2, 4) = ______.
What will be returned by the given query? SELECT INSTR('INFORMATIONFORM', 'FOR') = ______.
What will be returned by the given query? SELECT DAYOFYEAR('2015-01-10') = ______.
Which of the following is not a text function?
The string function that returns the index of the first occurrence of substring is ______.
What is the general format of UPPER() return type?
Which statement is used to count the number of rows in table?
Write the name of the functions to perform the following operation:
To display the specified number of characters from a particular position of the given string.
Write the name of the functions to perform the following operation:
To display the name of the month in which you were born.
Write the name of the functions to perform the following operation:
To display your name in capital letters.
Write the output produced by the following SQL statement:
SELECT ROUND(342.9234, -1);
Write the output produced by the following SQL statement:
SELECT LENGTH("Informatics Practices");
Write the output produced by the following SQL statement:
SELECT LEFT("INDIA", 3), RIGHT("Computer Science", 4), MID("Informatics", 3, 4), SUBSTR("Practices", 3);
Predict the output of the code given below:
s="welcome2cs"
n = len(s)
m=""
for i in range(0, n):
if (s[i] >= 'a' and s[i] <= 'm'):
m = m +s[i].upper()
elif (s[i] >= 'n' and s[i] <= 'z'):
m = m +s[i-1]
elif (s[i].isupper()):
m = m + s[i].lower()
else:
m = m +'&'
print(m)
Which type of values will not be considered by SQL while executing the following statement?
SELECT COUNT(column name) FROM inventory;
If column “Fees” contains the data set (5000,8000,7500,5000,8000), what will be the output after the execution of the given query?
SELECT SUM (DISTINCT Fees) FROM student;
Which one of the following is not an aggregate function?
Which one of the following functions are used to find the largest value from the given data in MySQL?
Write outputs for SQL queries that are based on the given table PURCHASE:
TABLE: PURCHASE | ||||
CNO | CNAME | CITY | QUANTITY | DOP |
C01 | GURPREET | NEW DELHI | 150 | 2022-06-11 |
C02 | MALIKA | HYDERABAD | 10 | 2022-02-19 |
C03 | NADAR | DALHOUSIE | 100 | 2021-12-04 |
C04 | SAHIB | CHANDIGARH | 50 | 2021-10-10 |
C05 | MEHAK | CHANDIGARH | 15 | 2021-10-20 |
- SELECT LENGTH(CNAME) FROM PURCHASE WHERE QUANTITY>100;
- SELECT CNAME FROM PURCHASE WHERE MONTH(DOP) = 3;
- SELECT MOD (QUANTITY, DAY(DOP)) FROM PURCHASE WHERE CITY = ‘CHANDIGARH’;
Based on the table STUDENT given here, write suitable SQL queries for the following:
Roll No | Name | Class | Gender | City | Marks |
1 | Abhishek | XI | M | Agra | 430 |
2 | Prateek | XII | M | Mumbai | 440 |
3 | Sneha | XI | F | Agra | 470 |
4 | Nancy | XII | F | Mumbai | 492 |
5 | Himanshu | XII | M | Delhi | 360 |
6 | Anchal | XI | F | Dubai | 256 |
7 | Mehar | X | F | Moscow | 324 |
8 | Nishant | X | M | Moscow | 429 |
- Display gender-wise highest marks.
- Display city-wise lowest marks.
- Display the total number of male and female students.
Write suitable SQL query for the following:
Display the position of occurrence of the string ‘COME’ in the string ‘WELCOME WORLD’.
Explain the following SQL function using a suitable example.
UCASE()
Explain the following SQL function using a suitable example.
MID()
Explain the following SQL function using a suitable example.
POWER()
Which function returns the sum of all elements of a list?