Update SQL_Class_3.txt

Author: shashank-mishra219

SQL_Class_3.txt

@@ -68,3 +68,42 @@ select * from employee order by salary desc limit 1;
 
 # Write a query to find the employee who is getting minium salary?
 select * from employee order by salary limit 1;
+
+# Conditional Operators ->    < , > , <= , >= 
+# Logical Operator -> AND, OR, NOT
+
+select * from employee;
+
+# list all employees who are getting salary more than 20000
+select * from employee where salary>20000;
+
+# list all employees who are getting salary more than or equal to 20000
+select * from employee where salary>=20000;
+
+# list all employees who are getting less than 20000
+select * from employee where salary<20000;
+
+# list all employees who are getting salary less than or equal to 20000
+select * from employee where salary<=20000;
+
+
+# filter the record where age of employees is equal to 20
+select * from employee where age=20;
+
+# filter the record where age of employees is not equal to 20
+# we can use != or we can use <>
+select * from employee where age != 20;
+select * from employee where age <> 20;
+
+# find those employees who joined the company on 2021-08-11 and their salary is less than 11500
+select * from employee where hiring_date = '2021-08-11' and salary<11500;
+
+# find those employees who joined the company after 2021-08-11 or  their salary is less than 20000
+select * from employee where hiring_date > '2021-08-11' or salary<20000;
+
+# how to use Between operation in where clause
+# get all employees data who joined the company between hiring_date 2021-08-05 to 2021-08-11
+select * from employee where hiring_date between '2021-08-05' and '2021-08-11';
+
+# get all employees data who are getting salary in the range of 10000 to 28000
+select * from employee where salary between 10000 and 28000;