Introduction

Here we will discuss 10 beginner level MySQL multiple-choice questions (MCQs) related to various MySQL topics(mixed topics). These questions will include some parts from MySQL clauses such as WHERE, LIMIT, TRIM, GROUP BY, etc

1)MySQL clause used to filter records based on a specified condition?

a) WHERE

b) LIMIT

c) GROUP BY

d) TRIM

Answer: a) WHERE Explanation: The WHERE clause is used to filter records in a MySQL query based on a specified condition. It allows us to filter the records based on the condition we provided in where clause

2)MySQL clause used to limit the number of records returned in a query result?

a) WHERE

b) LIMIT

c) GROUP BY

d) TRIM

Answer: b) LIMIT Explanation: The LIMIT clause is used to limit the number of records returned in a query result. It is often used in combination with the ORDER BY clause to retrieve a specific number of records, for ex. top 10 results.

3)SQL clause used to remove leading and trailing spaces from a string?

a) WHERE

b) LIMIT

c) GROUP BY

d) TRIM

Answer: d) TRIM Explanation: The TRIM function in MySQL is used to remove leading and trailing spaces from a string. It is commonly used to clean up data before performing comparisons or storing it in the database.

4)MySQL clause used to group rows based on a specified column?

a) WHERE

b) LIMIT

c) GROUP BY

d) TRIM

Answer: c) GROUP BY Explanation: The GROUP BY clause is used to group rows in a MySQL query based on a specified column. It is often used in combination with aggregate functions, such as COUNT, SUM, or AVG, to perform calculations on grouped data.

5)MySQL clause used to sort the result set in ascending or descending order?

a) WHERE

b) LIMIT

c) GROUP BY

d) ORDER BY

Answer: d) ORDER BY Explanation: The ORDER BY clause is used to sort the result set in a MySQL query in ascending or descending order.

6)MySQL clause used to join rows from two or more tables based on a related column between them? a) WHERE b) LIMIT c) GROUP BY d) JOIN

Answer: d) JOIN Explanation: The JOIN clause is used to combine rows from two or more tables in a MySQL query based on a related column between them. It allows us to get data from multiple tables that are related to each other.

7) MySQL clause used to update existing records in a table?

a) WHERE b) LIMIT c) GROUP BY d) UPDATE

Answer: d) UPDATE Explanation: The UPDATE clause is used to modify existing records in a table in a MySQL query. It allows us to change the values of one or more columns in the specified table based on the required condition.

8) MySQL clause used to insert new records into a table?

a) WHERE b) LIMIT c) GROUP BY d) INSERT INTO

Answer: d) INSERT INTO Explanation: The INSERT INTO clause is used to insert new records into a table in a MySQL query. It allows us to specify the table name and the values to be inserted into the respective columns.

9) MySQL clause used to delete records from a table?

a) WHERE b) LIMIT c) GROUP BY d) DELETE FROM

Answer: d) DELETE FROM Explanation: The DELETE FROM clause is used to delete records from a table in a MySQL query. Based on provided condition it will determine which records to delete.

10) MySQL clause used to calculate the average value of a column in a table?

a) WHERE b) LIMIT c) GROUP BY d) AVG

Answer: d) AVG Explanation: The AVG function is used to calculate the average value of a column in a MySQL query. It is often used in combination with the GROUP BY clause to calculate average values for specific data group.