Vijay Kudal has posted a new item, 'What is Set operators? Types of Set
Operators? Union, Intersect, Except in SQL Server with example'
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Welcome to "Freshers Junction SQL Server Technical interview Questions
Section". Today we are discussing About Set Operators in SQL Server with
example.We all know, Set operators in SQL Server with example? Is the very
important technical interview question for both freshers and experience
candidates. So now we discuss in detailed about set operators such as what are
set operators, types of set operators, how set operators works.What is set
Operators? Set operators combines the data from
two tables into one table. Set operators queries are called as "Compound
Queries"Types of Set Operators?In sql server there are 3 types of set
operators. Those are Intersect set Operator, Except set operator and Union set
Operator.Before going to explain each operator with example sql query, we need
to create two sql server tables in SQL Server Management Studio.How to Create
Table in SQL Server management studioThe two table names which we create are
Employee99 and Employee98. These two tables are as shown in below image.Now we
see how each operator works.1. Union Set Operator:We all know how union Set
operator works in mathematics. As same union set operator works here also. What
I mean is " Union Set Operator adds unique records from both the
tables".Example: Select dept from employee99 Union Select dno from
employee98Write the above query in SQL Server Management Studio and execute.The
output of union set operator is as follow.1. 102. 203. 304. 405. 506. 60SQL
Query To Get Top 2 Highest Salary Employee Details In a SQL Server Table2.
Intersect Set OperatorWe all know how Intersect Set operator works in
mathematics. As same Intersect set operator works here also. What I mean is "
Intersect Set Operator takes only matched records from both the
tables".Example: Select dept from employee99 intersect Select dno
from employee98Write the above query in SQL Server Management Studio and
execute.The output of intersect set operator is as follow.1. 102. 203. 304.
40SQL Query to get Department wise Maximum Salary Employee Details from SQL
server Table3. Except set operator: This Excepts
set operator is also works as Mathematical set operator. "Except set operator
gives all records from first table except matched records from second
table".That is First table – Second TableExample: Select dept from
employee99 except Select dno from employee98Write the above query in SQL
Server Management Studio and execute.The output of except set operator is as
follow.6.60You may Also Like:SQL Query to Replace a character with Some other
character in a columnWhat is the difference between Where clause and having
clause in SQL ServerNote: Press Ctrl+D to bookmark this page and remind once
again if you needed.If you have any more Queries about this topic, Then comment
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Questions, Tricks and tips to solve Aptitude problems.You may also search about
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