1. Comparison Operators
Relational Operators

2. Select all employees in the Research Department “Research” 2 >
Symbol
Operator
Examples
What It Means 1 =
Equal To
DEPARTMENT
Select all employees in the Research Department
“Research” 2
>
Greater Than
SALARY
Select all employees who make more than $40,000
>40000 3
>=
Greater Than or Equal To
Select all employees who make $40,000 or more
>=40000 4
<
Less Than
Select all employees who make less than $40,000
<40000 5
<=
Less Than or Equal To
Select all employees who make $40,000 or less
<=40000 6
<>
Not Equal To
Select all employees in any department other than the Research Department
<>"Research"

3. Select employees in any department other than the Research Department
NOT LOGICAL OPERATOR
Operator
Examples
What It Means 1
NOT
Not Equal To
DEPARTMENT
Select employees in any department other than the Research Department
NOT “Research”

4. “Finance” OR “Accounting”
OR LOGICAL OPERATOR
Operator
Example
What It Means 1 OR
DEPARTMENT
Select all employees in the Finance Department and select all employees in the Accounting Department
“Finance” OR “Accounting”

5. OR LOGICAL CONDITION DEPARTMENT “Finance” “Accounting” Operator
Example
What It Means
DEPARTMENT
Select all employees in the Finance Department and select all employees in the Accounting Department
“Finance”
“Accounting”

6. AND LOGICAL CONDITION DEPARTMENT SALARY “Research” <40000 Operator
Example
What It Means 1
DEPARTMENT
SALARY
Select all employees in the Research Department who also make less than $40,000
“Research”
<40000