Q. The FROM SQL clause is used to...

View solution

Q. Which SQL keyword is used to retrieve only unique values?

View solution

Q. Which SQL keyword is used to retrieve a maximum value?

View solution

Q. What is a view?

View solution

Q. Which of the following SQL commands is used to retrieve data?

View solution

Q. Which of the following is a SQL aggregate function?

View solution

Q. Which SQL statement is used to update data in a database?

View solution

Q. Which SQL statement is used to delete data FROM a database?

View solution

Q. Which SQL keyword is used to sort the result-set?

View solution

Q. The SQL statement
SELECT SUBSTR('123456789', INSTR('abcabcabc', 'b'), 4) FROM DUAL;

View solution

Q. Which of the following group functions ignore NULL values?

View solution

Q. Table Employee has 10 records. It has a non-NULL SALARY column which is also UNIQUE.
The SQL statement
SELECT COUNT(*) FROM Employee WHERE SALARY > ANY (SELECT SALARY FROM EMPLOYEE);
prints

View solution

Q. The SQL statement
SELECT SUBSTR('abcdefghij', INSTR('123321234', '2', 3, 2), 2) FROM DUAL;
prints

View solution

Q. The SQL statement
SELECT ROUND(45.926, -1) FROM DUAL;

View solution

Q. Which of the following must be enclosed in double quotes?

View solution

Q. Which of the following command makes the updates performed by the transaction permanent in the database?

View solution

Q. Which command undo all the updates performed by the SQL in the transaction?

View solution

Q. Find all the cities whose humidity is 89

View solution

Q. Find the temperature in increasing order of all cities

View solution

Q. What is the meaning of LIKE '%0%0%'

View solution