i. How can you list the databases in MySQL.ii. How do you check the version of MySQL?iii. How can you cancel a command that you are in the process of entering in MySQLconsole?iv. What is the function to return the current user name in MySQL?v. Can you use DISTINCT command for more than one column?vi. When you executing DELETE command, if you get an error as “foreign key constraint”.What does it imply?vii. What is the default order of sort in ORDER BY clause?viii. What is the function to get the current date?ix. When you use a HAVING clause?x. What SQL statement is used to insert a new data in a database?
Question
i. How can you list the databases in MySQL.ii. How do you check the version of MySQL?iii. How can you cancel a command that you are in the process of entering in MySQLconsole?iv. What is the function to return the current user name in MySQL?v. Can you use DISTINCT command for more than one column?vi. When you executing DELETE command, if you get an error as “foreign key constraint”.What does it imply?vii. What is the default order of sort in ORDER BY clause?viii. What is the function to get the current date?ix. When you use a HAVING clause?x. What SQL statement is used to insert a new data in a database?
Solution 1
i. To list the databases in MySQL, you can use the command SHOW DATABASES;.
ii. To check the version of MySQL, you can use the command SELECT VERSION();.
iii. To cancel a command that you are in the process of entering in MySQL console, you can use the command \c.
iv. The function to return the current user name in MySQL is SELECT USER();.
v. Yes, you can use the DISTINCT command for more than one column. You just need to separate the column names with a comma.
vi. If you get an error as “foreign key constraint” when executing a DELETE command, it implies that you are trying to delete a row from a table that has a foreign key relationship with another table, and the deletion would violate the constraint.
vii. The default order of sort in ORDER BY clause is ascending (ASC).
viii. The function to get the current date in MySQL is SELECT CURDATE();.
ix. You use a HAVING clause when you want to filter the results of a GROUP BY operation in a SQL statement.
x. The SQL statement used to insert a new data in a database is INSERT INTO.
Solution 2
i. To list the databases in MySQL, you can use the command SHOW DATABASES;.
ii. To check the version of MySQL, you can use the command SELECT VERSION();.
iii. To cancel a command that you are in the process of entering in MySQL console, you can use the command \c.
iv. The function to return the current user name in MySQL is SELECT USER();.
v. Yes, you can use the DISTINCT command for more than one column. You just need to separate the column names with a comma.
vi. If you get an error as “foreign key constraint” when executing a DELETE command, it implies that you are trying to delete a row from a table that has a foreign key relationship with another table, and the deletion would result in a violation of this foreign key constraint.
vii. The default order of sort in ORDER BY clause is ascending (ASC).
viii. The function to get the current date in MySQL is SELECT CURDATE();.
ix. You use a HAVING clause when you want to filter the results of a GROUP BY operation in a SQL statement.
x. The SQL statement used to insert a new data in a database is INSERT INTO.
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