how to display employee names starting with a and then b in sql

Question

i want to display the employee names which having names start with a and b ,it should be like list will display employees with \'a\' as a first letter and then the \'b\' as a

Answer 1

Oracle: Just felt to do it in different way. Disadvantage: It doesn't perform full index scan. But still gives the result and can use this in substring.

select employee_name 
from employees
where lpad(employee_name,1) ='A'
 OR lpad(employee_name,1) = 'B'
order by employee_name

We can use LEFT in SQL Server instead of lpad . Still suggest not a good idea to use this method.

Answer 2

To get employee names starting with A or B listed in order...

select employee_name 
from employees
where employee_name LIKE 'A%' OR employee_name LIKE 'B%'
order by employee_name

If you are using Microsoft SQL Server you could use

....
where employee_name  LIKE '[A-B]%'
order by employee_name

This is not standard SQL though it just gets translated to the following which is.

WHERE  employee_name >= 'A'
       AND employee_name < 'C' 

For all variants you would need to consider whether you want to include accented variants such as Á and test whether the queries above do what you want with these on your RDBMS and collation options.

Answer 3

Here what I understood from the question is starting with "a " and then "b" ex:

• abhay
• abhishek
• abhinav

So there should be two conditions and both should be true means you cant use "OR" operator Ordered by is not not compulsory but its good if you use.

Select e_name from emp 
where  e_name like 'a%' AND e_name like '_b%'
Ordered by e_name

Answer 4

From A to Z:

select employee_name from employees ORDER BY employee_name ;

From Z to A:

select employee_name from employees ORDER BY employee_name desc ;

Answer 5

select * 
from stores 
where name like 'a%' or 
name like 'b%' 
order by name

Answer 6

We can also use REGEXP

select employee_name 
from employees
where employee_name REGEXP '[ab].*'
order by employee_name