SQL Wildcards

Posted by Monir Hossain On 1:28:00 am | No comments

SQL Wildcards


A wildcard character can be used to substitute for any other character(s) in a string.

SQL Wildcard Characters

In SQL, wildcard characters are used with the SQL LIKE operator.
SQL wildcards are used to search for data within a table. 
With SQL, the wildcards are:
WildcardDescription
%A substitute for zero or more characters
_A substitute for a single character
[charlist]Sets and ranges of characters to match
[^charlist]
or
[!charlist]
Matches only a character NOT specified within the brackets


Demo Database

In this tutorial we will use the well-known Northwind sample database.
Below is a selection from the "Customers" table:
CustomerIDCustomerNameContactNameAddressCityPostalCodeCountry
1
Alfreds FutterkisteMaria AndersObere Str. 57Berlin12209Germany
2Ana Trujillo Emparedados y heladosAna TrujilloAvda. de la Constitución 2222México D.F.05021Mexico
3Antonio Moreno TaqueríaAntonio MorenoMataderos 2312México D.F.05023Mexico
4
Around the HornThomas Hardy120 Hanover Sq.LondonWA1 1DPUK
5Berglunds snabbköpChristina BerglundBerguvsvägen 8LuleåS-958 22Sweden


Using the SQL % Wildcard

The following SQL statement selects all customers with a City starting with "ber":

Example

SELECT * FROM Customers
WHERE City LIKE 'ber%';

Try it yourself »
The following SQL statement selects all customers with a City containing the pattern "es": 

Example

SELECT * FROM Customers
WHERE City LIKE '%es%';

Try it yourself »


Using the SQL _ Wildcard

The following SQL statement selects all customers with a City starting with any character, followed by "erlin":

Example

SELECT * FROM Customers
WHERE City LIKE '_erlin';

Try it yourself »
The following SQL statement selects all customers with a City starting with "L", followed by any character, followed by "n", followed by any character, followed by "on":

Example

SELECT * FROM Customers
WHERE City LIKE 'L_n_on';

Try it yourself »


Using the SQL [charlist] Wildcard

The following SQL statement selects all customers with a City starting with "b", "s", or "p":

Example

SELECT * FROM Customers
WHERE City LIKE '[bsp]%';

Try it yourself »
The following SQL statement selects all customers with a City starting with "a", "b", or "c":

Example

SELECT * FROM Customers
WHERE City LIKE '[a-c]%';

Try it yourself »
The following SQL statement selects all customers with a City NOT starting with "b", "s", or "p":

Example

SELECT * FROM Customers
WHERE City LIKE '[!bsp]%';

Try it yourself »


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