What's the difference between “LIKE” and “=” in SQL?

Question

Is there any difference between:

SELECT * FROM users WHERE username=\"davyjones\"

and

SELECT * FROM users WHERE username LI         


        

Answer 1

create table A (id int,name varchar(30))

insert into A values(4,'subhash')

Use the trailing whitespace to search the name field:

select * from A where name='Subhash '
--Yields 1 row
select * from A where name like 'Subhash '
--Yields 0 row