SQL Database Interview Questions and Answers FAQ PDF Book Download

Sql database interview questions and answers, learn online sql MCQs, competency based interview questions with FAQs based online test prep. These frequently asked questions has multiple choice questions (MCQs), sql quiz questions and answers as attributes in group by clause having tuples with same value are placed in, with choices one group, two groups, multiple groups, and no groups for online certifications and degrees. Free FAQ, situational interview questions are to learn sql database interview questions and answers: Q&A online with MCQs to practice test questions with answers.

FAQ: SQL Database Interview Questions and Answers PDF Book Download

MCQ: Attributes in group by clause having tuples with same value are placed in

  1. One group
  2. Two groups
  3. Multiple groups
  4. No groups

A

MCQ: Aggregate functions can be applied over a group of sets of tuples instead of just single tuple by using clause

  1. By Grouped clause
  2. Group by clause
  3. Merge clause
  4. Sync clause

B

MCQ: Aggregate function count of an empty collection is said to be

  1. Always unity
  2. 0
  3. Infinite
  4. Unknown

B

MCQ: Built-in aggregate functions defined by SQL, ignore null values for their input collection, except

  1. Sum
  2. Avg
  3. Min/max
  4. Count(*)

D

MCQ: Attributes specified in group by clause of SQL statement, are used to form

  1. A single value
  2. Multiple values
  3. Groups
  4. Multiple relations

C