Results
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#1. Which MYSQL statement is used to return only different values?
#2. An outer join requires each record in the two joined tables to have a matching record.
#3. What is a candidate key?
#4. What does SQL stand for?
#5. Can I define multiple unique constraints on a table?
#6. Primary Key does allow the Null Values. where as in Unique key doesn’t accept the Null values.
#7. Which MYSQL statement is used to delete data from a database?
#8. Which of the following file extension is a valid MyISAM file extension?
#9. How much storage space does DATETIME require?
#10. Which SQL keyword is used to sort the result-set?
#11. –i-am-a-dummy flag is used Makes the MySQL engine refuse UPDATE and which other command?
#12. How can we get the number of records or rows in a table?
#13. 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
#14. On executing DELETE command, if you get an error “foreign key constraint”- what does it imply?
#15. Which MYSQL statement is used to update data in a database?
#16. BLOB data type can have default column value.
#17. Can I call a trigger directly called from an application?
#18. Can DISTINCT command be used for more than one column?
#19. Which of the following ways below are the correct way to get the current date?
#20. With SQL, how do you select all the columns from a table named “Persons”?