What is union and union all keyword in sql and what are their differences?


No Answer is Posted For this Question
Be the First to Post Answer

Post New Answer

More SQL PLSQL Interview Questions

In table a 1lakh data is present,in table b 20 thousand data is present, to get unique data from table a and b which join to be considered. whether right outer join or left inner join. 

2 Answers   GE,


Does pdo prevent sql injection?

0 Answers  


Can we use distinct and group by together?

0 Answers  


what is a composite primary key ? : Sql dba

0 Answers  


What is a stored procedure in sql with example?

0 Answers  






State few characteristics of pl/sql?

0 Answers  


What is nvarchar in sql?

0 Answers  


What is a mutating table

5 Answers   TCS, Tech Mahindra,


What is scalar and vector?

0 Answers  


What is the process of debugging?

0 Answers  


Is id a reserved word in sql?

0 Answers  


What are the types pl/sql code blocks?

0 Answers  


Categories