SQL Database Interview Questions and Answers FAQ PDF Download

Learn sql database interview questions and answers FAQ, sql FAQ, competency based interview questions with MCQs based online test prep. These frequently asked questions has multiple choice questions (MCQ), sql quiz questions and answers: attributes in group by clause having tuples with same value are placed in, answer key with options one group , two groups, multiple groups and no groups for competitive exam preparation. Free FAQ, situational interview questions are to learn sql database interview questions and answers quiz online with MCQs to practice test questions with answers.

FAQ: SQL Database Interview Questions and Answers PDF 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