The LIKE operator in SQL is used to find values that match a specific pattern. It uses the wildcard characters % (matches any character) and _ (matches a single character). The LIKE operator is usually used in conjunction with the WHERE clause to filter rows in a table. Note that it is case-sensitive and wildcards can only be used at the beginning or end of the pattern.
#What is LIKE in SQL?
The LIKE operator is used in SQL to find values that match a specific pattern. It uses the wildcard characters % (percent sign) and _ (underscore), allowing you to specify a specific part of the value to search for.
The percent sign (%)
The percent sign matches any number of characters. For example, LIKE '%john%'
will match the values john
, john smith
, johnny
, etc.
Underscore (_)
Underscore matches a single character. For example, LIKE 'j_hn'
will match john
, but not johnny
.
Use the LIKE operator
The LIKE
operator is usually used in combination with the WHERE
clause to filter the table OK. The syntax is as follows:
<code>SELECT column_name(s) FROM table_name WHERE column_name LIKE 'pattern';</code>
Example
Look up all customers whose name contains "john" in table customers
:
<code>SELECT name FROM customers WHERE name LIKE '%john%';</code>
Notes
LIKE '\\%john'
will match %john
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