{"id":10271,"date":"2023-05-02T10:50:07","date_gmt":"2023-05-02T10:50:07","guid":{"rendered":"https:\/\/www.scmgalaxy.com\/tutorials\/?p=10271"},"modified":"2023-06-19T13:29:44","modified_gmt":"2023-06-19T13:29:44","slug":"top-50-mysql-interview-questions-with-answers","status":"publish","type":"post","link":"https:\/\/www.scmgalaxy.com\/tutorials\/top-50-mysql-interview-questions-with-answers\/","title":{"rendered":"Top 50 Mysql Interview Questions with Answers"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-52.png\" alt=\"\" class=\"wp-image-10272\" width=\"669\" height=\"394\" srcset=\"https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-52.png 815w, https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-52-300x177.png 300w, https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-52-768x452.png 768w\" sizes=\"auto, (max-width: 669px) 100vw, 669px\" \/><figcaption class=\"wp-element-caption\"><strong><em>Mysql Interview Questions with Answers<\/em><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">1) Which of the following is an open-source relational database management system?<br>a) MongoDB<br>b) Oracle Database<br>c) MySQL<br>d) Amazon Aurora<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) MySQL<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">2) Which of the following statements is true about MySQL?<br>a) It is written in PHP<br>b) It uses NoSQL data model<br>c) It supports ACID properties<br>d) It only runs on Windows operating systems<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) It supports ACID properties<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">3) Which of the following is not a valid datatype in MySQL?<br>a) BOOLEAN<br>b) DOUBLE<br>c) CHAR<br>d) STRING<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) STRING<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">4) Which of the following is not a valid constraint in MySQL?<br>a) FOREIGN KEY<br>b) UNIQUE<br>c) PRIMARY KEY<br>d) MAXIMUM VALUE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) MAXIMUM VALUE<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">5) What is the default port number for MySQL?<br>a) 80<br>b) 443<br>c) 3306<br>d) 5432<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) 3306<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">6) Which SQL statement is used to create a new table in MySQL?<br>a) ALTER TABLE<br>b) CREATE TABLE<br>c) UPDATE TABLE<br>d) DELETE TABLE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) CREATE TABLE<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">7) Which MySQL command is used to create a backup of a database or table?<br>a) BACKUP DATABASE<br>b) CREATE BACKUP<br>c) mysqldump<br>d) EXPORT DATABASE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) mysqldump<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">8) Which command is used in MySQL to add a new column to an existing table?<br>a) ALTER TABLE<br>b) CREATE TABLE<br>c) UPDATE TABLE<br>d) DELETE TABLE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) ALTER TABLE<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">9) Which MySQL function is used to retrieve the current date and time?<br>a) NOW()<br>b) DATE()<br>c) TIME()<br>d) TIMESTAMP()<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) NOW()<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">10) Which of the following operators is used in MySQL to compare two values for equality?<br>a) =<br>b) ==<br>c) !=<br>d) &lt;&gt;<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) =<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">11) Which of the following is not a valid comparison operator in MySQL?<br>a) LIKE<br>b) IN<br>c) NOT IN<br>d) CONTAINS<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) CONTAINS<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">12) Which MySQL function is used to return the number of rows in a table?<br>a) COUNT(*)<br>b) MAX()<br>c) MIN()<br>d) AVG()<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) COUNT(*)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">13) Which of the following is not a valid aggregate function in MySQL?<br>a) SUM()<br>b) COUNT()<br>c) AVERAGE()<br>d) MAX()<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) AVERAGE()<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">14) Which of the following is used in MySQL to specify a condition that must be met for the returned rows?<br>a) WHERE clause<br>b) ORDER BY clause<br>c) GROUP BY clause<br>d) HAVING clause<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) WHERE clause<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">15) Which MySQL command is used to delete a table?<br>a) REMOVE TABLE<br>b) DELETE TABLE<br>c) DROP TABLE<br>d) ERASE TABLE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) DROP TABLE<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">16) Which of the following is not a valid join type in MySQL?<br>a) INNER JOIN<br>b) LEFT JOIN<br>c) OUTER JOIN<br>d) CROSS JOIN<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) OUTER JOIN<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">17) In a MySQL query, how do you limit the number of rows returned?<br>a) LIMIT<br>b) SELECT<br>c) WHERE<br>d) ORDER BY<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) LIMIT<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">18) Which MySQL command is used to grant privileges to a user?<br>a) GRANT PRIVILEGES<br>b) ADD PRIVILEGE<br>c) GRANT ALL<br>d) SET PRIVILEGES<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) GRANT ALL<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">19) Which of the following is not a valid MySQL storage engine?<br>a) MyISAM<br>b) InnoDB<br>c) XAMPP<br>d) Memory<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) XAMPP<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">20) Which MySQL command is used to change the password of a user?<br>a) ALTER USER<br>b) CHANGE PASSWORD<br>c) SET PASSWORD<br>d) UPDATE USER<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) SET PASSWORD<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">21) Which MySQL function is used to return the current user name?<br>a) USERNAME()<br>b) USER()<br>c) CURRENT_USER()<br>d) SESSION_USER()<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) CURRENT_USER()<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">22) Which of the following is a valid MySQL data type for storing date and time values?<br>a) DATETIME<br>b) DATEONLY<br>c) TIMEONLY<br>d) TIMESTAMP<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) DATETIME<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">23) Which MySQL command is used to create a new database?<br>a) CREATE DATABASE<br>b) ADD DATABASE<br>c) NEW DATABASE<br>d) INSERT DATABASE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) CREATE DATABASE<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">24) Which MySQL function is used to return the year from a date or datetime value?<br>a) YEAR()<br>b) MONTH()<br>c) DAY()<br>d) WEEK()<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) YEAR()<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">25) In MySQL, which clause is used to sort the result set by a specific column?<br>a) ORDER BY<br>b) SORT BY<br>c) GROUP BY<br>d) RANK BY<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) ORDER BY<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">26) Which of the following is a valid MySQL data type for storing binary data?<br>a) BLOB<br>b) TEXT<br>c) VARCHAR<br>d) INT<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) BLOB<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">27) Which MySQL command is used to restore a backup of a database or table?<br>a) RESTORE DATABASE<br>b) CREATE RESTORE<br>c) LOAD DATA<br>d) IMPORT DATABASE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) LOAD DATA<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">28) Which of the following is not a valid function in MySQL?<br>a) ROUND()<br>b) CEILING()<br>c) FLOOR()<br>d) TRUNCATE()<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) TRUNCATE()<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">29) Which MySQL command is used to view the structure of a table?<br>a) DESC<br>b) SHOW TABLE<br>c) STRUCTURE<br>d) GET TABLE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) DESC<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">30) Which of the following is not a valid MySQL data type for storing numeric values?<br>a) INT<br>b) FLOAT<br>c) DECIMAL<br>d) STRING<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) STRING<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">31) Which command in MySQL is used to insert new data into a table?<br>a) INSERT INTO<br>b) UPDATE<br>c) REPLACE<br>d) ADD<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) INSERT INTO<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">32) In MySQL, which clause is used to group the result set based on one or more columns?<br>a) GROUP BY<br>b) ORDER BY<br>c) HAVING<br>d) WHERE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) GROUP BY<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">33) Which of the following is not a valid MySQL function for working with strings?<br>a) SUBSTRING()<br>b) CONCAT()<br>c) REPLACE()<br>d) INDEX()<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) INDEX()<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">34) Which MySQL command is used to create a new user?<br>a) CREATE USER<br>b) ADD USER<br>c) SET USER<br>d) INSERT USER<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) CREATE USER<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">35) In MySQL, which statement is used to update existing rows in a table?<br>a) ALTER<br>b) UPDATE<br>c) MODIFY<br>d) REPLACE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) UPDATE<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">36) Which of the following is not a valid MySQL function for working with dates and times?<br>a) ADDDATE()<br>b) DATEDIFF()<br>c) TIMEADD()<br>d) TIMEFORMAT()<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) TIMEADD()<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">37) In MySQL, which statement is used to delete rows from a table?<br>a) DELETE<br>b) REMOVE<br>c) DROP<br>d) TRUNCATE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) DELETE<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">38) Which MySQL function is used to return the current time zone?<br>a) TIMEZONE()<br>b) CURRENT_TIMEZONE()<br>c) SESSION_TIMEZONE()<br>d) SYSTEM_TIMEZONE()<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) SESSION_TIMEZONE()<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">39) In MySQL, which clause is used to filter the result set based on a condition that must be met for the group?<br>a) HAVING<br>b) GROUP BY<br>c) ORDER BY<br>d) WHERE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) HAVING<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">40) Which MySQL command is used to rename a table?<br>a) ALTER TABLE<br>b) MODIFY TABLE<br>c) CHANGE TABLE<br>d) RENAME TABLE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) RENAME TABLE<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">41) Which of the following is not a valid MySQL function for working with arrays?<br>a) ARRAY_CONTAINS()<br>b) ARRAY_LENGTH()<br>c) ARRAY_REMOVE()<br>d) ARRAY_PUSH()<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) ARRAY_PUSH()<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">42) In MySQL, which statement is used to insert multiple rows into a table at once?<br>a) ADD ROWS<br>b) MULTI ROW INSERT<br>c) INSERT INTO<br>d) INSERT ALL<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) INSERT INTO<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">43) Which MySQL function is used to return the string length of a value?<br>a) CHAR_LENGTH()<br>b) SUBSTR()<br>c) LENGTH()<br>d) STR_LENGTH()<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) LENGTH()<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">44) Which of the following is not a valid MySQL data type for storing large text values?<br>a) TINYTEXT<br>b) MEDIUMTEXT<br>c) LONGTEXT<br>d) BLOB<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) BLOB<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">45) In MySQL, which statement is used to update or insert rows into a table depending on whether a matching row already exists?<br>a) REPLACE<br>b) INSERT IGNORE<br>c) INSERT INTO<br>d) UPDATE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) REPLACE<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">46) Which MySQL command is used to add a primary key to an existing table?<br>a) ALTER TABLE<br>b) MODIFY TABLE<br>c) ADD PRIMARY KEY<br>d) CHANGE TABLE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) ADD PRIMARY KEY<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">47) Which MySQL function is used to return the current UTC date and time?<br>a) UTC_TIMESTAMP()<br>b) CURRENT_TIMESTAMP()<br>c) NOW()<br>d) TIMESTAMP()<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) UTC_TIMESTAMP()<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">48) In MySQL, which statement is used to rename a column in a table?<br>a) ALTER TABLE<br>b) MODIFY COLUMN<br>c) RENAME COLUMN<br>d) CHANGE COLUMN<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) CHANGE COLUMN<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">49) Which of the following is not a valid MySQL data type for storing Boolean values?<br>a) BOOL<br>b) TINYINT<br>c) SMALLINT<br>d) BOOLEAN<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) SMALLINT<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">50) In MySQL, which statement is used to replicate data from one server to another?<br>a) REPLICATE<br>b) COPY<br>c) BACKUP<br>d) MASTER-SLAVE<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) MASTER-SLAVE<\/h4>\n","protected":false},"excerpt":{"rendered":"<p>1) Which of the following is an open-source relational database management system?a) MongoDBb) Oracle Databasec) MySQLd) Amazon Aurora Answer: c) [&hellip;]<\/p>\n","protected":false},"author":33,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10271","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Top 50 Mysql Interview Questions with Answers - scmGalaxy<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.scmgalaxy.com\/tutorials\/top-50-mysql-interview-questions-with-answers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Top 50 Mysql 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