Which of the following are aggregate functions in SQL?

Which one must be specified in every DELETE statement?

Which are not Numeric column types?

Which of the following results in 0 (false)?

Which ones are true?

Consider the following table structure of students: rollno number(4) name varchar(20) course varchar(20) What will be the query to display the courses in which the number of students enrolled is more than 5?

Which functions will return a set of comma-separated strings that have the corresponding bit in bits set?

Which function decodes to a base-64 string and returns result?

Which account management statements was added in MySQL 5.6?

Return value in case str is not found? FiELD(str.str1.str2.str3,...)

Which queries will return NULL records from the table myTable?