The SQL LIKE clause is used to compare a value to similar values using wildcard operators. There are two wildcards used in conjunction with the LIKE operator.
The percent sign (%) The underscore (_) The percent sign represents zero, one or multiple characters. The underscore represents a single number or character. These symbols can be used in combinations.
Syntax The basic syntax of % and _ is as follows −
SELECT FROM table_name
WHERE column LIKE 'XXXX%'
or
SELECT FROM table_name
WHERE column LIKE '%XXXX%'
or
SELECT FROM table_name
WHERE column LIKE 'XXXX_'
or
SELECT FROM table_name WHERE column LIKE '_XXXX'
or
SELECT FROM table_name
WHERE column LIKE '_XXXX_'
You can combine N number of conditions using AND or OR operators. Here, XXXX could be any numeric or string value.
Example The following table has a few examples showing the WHERE part having different LIKE clause with '%' and '_' operators −
Sr.No. Statement & Description 1``` WHERE SALARY LIKE '200%'
Finds any values that start with 200.
2
WHERE SALARY LIKE '%200%'
Finds any values that have 200 in any position.
3
WHERE SALARY LIKE '_00%'
Finds any values that have 00 in the second and third positions.
4
WHERE SALARY LIKE '2%%'
Finds any values that start with 2 and are at least 3 characters in length.
5
WHERE SALARY LIKE '%2'
Finds any values that end with 2.
6
WHERE SALARY LIKE '_2%3'
Finds any values that have a 2 in the second position and end with a 3.
7
WHERE SALARY LIKE '2___3'
%[https://youtu.be/9bOniezl7Qo]
Finds any values in a five-digit number that start with 2 and end with 3.
Let us take a real example, consider the CUSTOMERS table having the records as shown below.
+----+----------+-----+-----------+----------+
| ID | NAME | AGE | ADDRESS | SALARY | +----+----------+-----+-----------+----------+ | 1 | Ramesh | 32 | Ahmedabad | 2000.00 | | 2 | Khilan | 25 | Delhi | 1500.00 | | 3 | kaushik | 23 | Kota | 2000.00 | | 4 | Chaitali | 25 | Mumbai | 6500.00 | | 5 | Hardik | 27 | Bhopal | 8500.00 | | 6 | Komal | 22 | MP | 4500.00 | | 7 | Muffy | 24 | Indore | 10000.00 | +----+----------+-----+-----------+----------+
Following is an example, which would display all the records from the CUSTOMERS table, where the SALARY starts with 200.
SQL>
SELECT * FROM CUSTOMERS WHERE SALARY LIKE '200%';
This would produce the following result −
+----+----------+-----+-----------+----------+ | ID | NAME | AGE | ADDRESS | SALARY | +----+----------+-----+-----------+----------+ | 1 | Ramesh | 32 | Ahmedabad | 2000.00 | | 3 | kaushik | 23 | Kota | 2000.00 | ``` https://www.tutorialspoint.com/sql/sql-like-clause.htm