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In MySQL, how can we check whether a string of a specified pattern is not present within another string?
We can check whether a string of specified pattern is not present within another string by using NOT LIKE operator along with wildcard characters.
Syntax
NOT LIKE specific_pattern
Specific_pattern is the pattern of string we do not want to find out within another string.
Example
Suppose we have a table named ‘student’ having names of the students and we want to get the details of all those students which are not having a pattern of string ‘av’ within their names. It can be done with the help of following MySQL query:
mysql> Select * from Student WHERE name NOT LIKE '%av%'; +------+---------+---------+----------+--------------------+ | Id | Name | Address | Subject | year_of_Admission | +------+---------+---------+----------+--------------------+ | 15 | Harshit | Delhi | Commerce | 2009 | | 21 | Yashraj | NULL | Math | 2000 | +------+---------+---------+----------+--------------------+ 2 rows in set (0.00 sec)
In the above example, the ‘%’ symbol is a wildcard used along with NOT LIKE operator.
Updated on: 07-Feb-2020
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