Which of the following is NOT a valid aggregate function?

When sorting by multiple columns, which character is used to separate column names?

What keyword is used to check for no value?

True or False: All SQL queries must contain a WHERE clause.

The command to remove rows from a table 'CUSTOMER' is:

Which command is used to sort retrieved data?

Which of the following is not a comparison operator in SQL?

Which of the following is the correct syntax for writing sub query?

Which of the following can be used with LIKE operator?

Which statement INSERTS or UPDATES based on the given conditions?

If a column is defined as decimal(5,2), what does that mean?