T-SQL and the WHERE LIKE %Parameter% clause

Question

I was trying to write a statement which uses the WHERE LIKE \'%text%\' clause, but I am not receiving results when I try to use a parameter for the text. For example, this

Answer 1

It should be:

...
WHERE LastName LIKE '%' + @LastName + '%';

Instead of:

...
WHERE LastName LIKE '%@LastName%'