SQL LIKE Operator
The SQL LIKE Operator
The LIKE
operator is used in a WHERE
clause to search for a specified pattern in a column.
There are two wildcards often used in conjunction with the LIKE operator:
- The percent sign (%) represents zero, one, or multiple characters
- The underscore sign (_) represents one, single character
Note:
MS Access uses an asterisk (*) instead of the percent sign (%), and a question mark (?) instead of the underscore (_).
The percent sign and the underscore can also be used in combinations!
LIKE Syntax
SELECT column1, column2, ...
FROM table_name
WHERE columnN LIKE pattern;
Info:
You can also combine any number of conditions using AND
or OR
operators.
Here are some examples showing different LIKE
operators with ‘%’ and ‘_’ wildcards:
LIKE Operator | Description |
---|---|
WHERE CustomerName LIKE ‘a%’ | Finds any values that start with “a” |
WHERE CustomerName LIKE ‘%a’ | Finds any values that end with “a” |
WHERE CustomerName LIKE ‘%or%’ | Finds any values that have “or” in any position |
WHERE CustomerName LIKE ‘_r%’ | Finds any values that have “r” in the second position |
WHERE CustomerName LIKE ‘a_%’ | Finds any values that start with “a” and are at least 2 characters in length |
WHERE CustomerName LIKE ‘a__%’ | Finds any values that start with “a” and are at least 3 characters in length |
WHERE ContactName LIKE ‘a%o’ | Finds any values that start with “a” and ends with “o” |
SQL LIKE Examples
The following SQL statement selects all customers with a CustomerName starting with “a”:
SELECT * FROM Customers
WHERE CustomerName LIKE 'a%';
The following SQL statement selects all customers with a CustomerName ending with “a”:
SELECT * FROM Customers
WHERE CustomerName LIKE '%a';
The following SQL statement selects all customers with a CustomerName that have “or” in any position:
SELECT * FROM Customers
WHERE CustomerName LIKE '%or%';
The following SQL statement selects all customers with a CustomerName that have “r” in the second position:
SELECT * FROM Customers
WHERE CustomerName LIKE '_r%';
The following SQL statement selects all customers with a CustomerName that starts with “a” and are at least 3 characters in length:
SELECT * FROM Customers
WHERE CustomerName LIKE 'a__%';
The following SQL statement selects all customers with a ContactName that starts with “a” and ends with “o”:
SELECT * FROM Customers
WHERE ContactName LIKE 'a%o';
The following SQL statement selects all customers with a CustomerName that does NOT start with “a”:
SELECT * FROM Customers
WHERE CustomerName NOT LIKE 'a%';
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