Performing Pattern Matching

Use the SQL LIKE operator and SQL wildcard strings in a SQL WHERE clause when you want to compare a value against a character string field so that the query returns database information based on commonalities. This is known as pattern matching and is a very common search scenario.

Usage example

For example, to return data for employees whose last name starts with AL and ends with anything, you would build a query that looks like this:

    SELECT FirstName, LastName,
    StartDate, Salary, Contract
    FROM    Employees
    WHERE   LastName LIKE 'AL%'
Note Note:By default, SQL is not case-sensitive.