Results
%3Cspan%20style%3D%22color%3A%20%23339966%22%3E%3Cstrong%3ECongratulations.%3C%2Fstrong%3E%3C%2Fspan%3E
%3Cstrong%3E%3Cspan%20style%3D%22color%3A%20%23ff0000%22%3EFail%3C%2Fspan%3E%2C%20Try%20Again%3C%2Fstrong%3E
#1. Primary Key does allow the Null Values. where as in Unique key doesn’t accept the Null values.
#2. An outer join requires each record in the two joined tables to have a matching record.
#3. Which MYSQL statement is used to return only different values?
#4. –i-am-a-dummy flag is used Makes the MySQL engine refuse UPDATE and which other command?
#5. Which MYSQL statement is used to update data in a database?
#6. What does SQL stand for?
#7. Which MYSQL statement is used to delete data from a database?
#8. Which is the default order of sort in ORDER BY clause?
#9. How can we get the number of records or rows in a table?
#10. Can DISTINCT command be used for more than one column?
#11. What is a candidate key?
#12. Can I call a trigger directly called from an application?
#13. On executing DELETE command, if you get an error “foreign key constraint”- what does it imply?
#14. Which of the following ways below are the correct way to get the current date?
#15. Enum values are stored accodring to their index numbers
#16. Which SQL statement is used to extract data from a database?
#17. Which of the following file extension is a valid MyISAM file extension?
#18. When do we use a HAVING clause?
#19. With SQL, how do you select all the columns from a table named “Persons”?
#20. The OR operator displays a record if ANY conditions listed are true. The AND operator displays a record if ALL of the conditions listed are true