search in sql code example

Example 1: like sql

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 3 characters in length
WHERE ContactName LIKE 'a%o'	
--Finds any values that start with "a" and ends with "o"

Example 2: text search in mysql

mysql> SELECT * FROM tutorial WHERE MATCH(title,description) AGAINST ('left right' IN NATURAL LANGUAGE MODE);
+----+---------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| id | title               | description                                                                                                                                                                                            |
+----+---------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|  5 | SQL Full Outer Join | In SQL the FULL OUTER JOIN combines the results of both left and right outer joins and returns all (matched or unmatched) rows from the tables on both sides of the join clause.                       |
|  3 | SQL Left Join       | The SQL LEFT JOIN, joins two tables and fetches rows based on a condition, which are matching in both the tables, and the unmatched rows will also be available from the table before the JOIN clause. |
+----+---------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)

Example 3: MySQL LIKE

The LIKE operator is a logical operator that tests whether a string contains a specified pattern or not. Here is the syntax of the LIKE operator:

expression LIKE pattern ESCAPE escape_character

This example uses the LIKE operator to find employees whose first names start with a:

SELECT 
    employeeNumber, 
    lastName, 
    firstName
FROM
    employees
WHERE
    firstName LIKE 'a%';
    
    This example uses the LIKE operator to find employees whose last names end with on e.g., Patterson, Thompson:

SELECT 
    employeeNumber, 
    lastName, 
    firstName
FROM
    employees
WHERE
    lastName LIKE '%on';
    
    
    For example, to find all employees whose last names contain on , you use the following query with the pattern %on%

SELECT 
    employeeNumber, 
    lastName, 
    firstName
FROM
    employees
WHERE
    lastname LIKE '%on%';