Using Full Text Searches : Full Text Search « Select Query « MySQL Tutorial

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MySQL Tutorial
1.Introduction
2.Select Query
3.Database
4.Table
5.Table Join
6.Subquery
7.Insert Update Delete
8.Logic Operator
9.View
10.Data Types
11.Procedure Function
12.Cursor
13.Trigger
14.Date Time Functions
15.Comparison Functions Operators
16.Aggregate Functions
17.Cast Functions Operators
18.Control Flow Functions
19.Encryption Compression Functions
20.Information Functions
21.Math Numeric Functions
22.Miscellaneous Functions
23.String Functions
24.Regular Expressions
25.Data Dictionary
26.MySQL Utilities
27.Privilege
MySQL Tutorial » Select Query » Full Text Search 
2.23.1.Using Full Text Searches

Full Text searches allow you to search for a phrase that can appear ANYWHERE in fields.

To do this you first have to alter any table nominating fields to be searchable within brackets as part of a FULL TEXT defination.

ALTER TABLE <table> ADD FULLTEXT (fields)

We could query the database using the MATCH() and AGAINST() functions.

SELECT FROM tableName WHERE MATCH(fieldsAGAINST ('search term')
mysql> CREATE TABLE Employee(
    ->     id            int,
    ->     first_name    VARCHAR(15),
    ->     last_name     VARCHAR(15),
    ->     start_date    DATE,
    ->     end_date      DATE,
    ->     salary        FLOAT(8,2),
    ->     city          VARCHAR(10),
    ->     description   VARCHAR(15)
    -> );
Query OK, rows affected (0.02 sec)

mysql>
mysql>
mysql> ALTER TABLE employee ADD FULLTEXT (first_name);
Query OK, rows affected (0.08 sec)
Records: 0  Duplicates: 0  Warnings: 0

mysql>
mysql>
mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->              values (1,'Jason J',    'Martin',  '19960725',  '20060725', 1234.56'Toronto',  'Programmer');
Query OK, row affected (0.03 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(2,'Ali J son',   'Mathews',  '19760321', '19860221', 6661.78'Vancouver','Tester');
Query OK, row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(3,'James',    'Smith',    '19781212', '19900315', 6544.78'Vancouver','Tester');
Query OK, row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(4,'Celia',    'Rice',     '19821024', '19990421', 2344.78'Vancouver','Manager');
Query OK, row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(5,'Robert',   'Black',    '19840115', '19980808', 2334.78'Vancouver','Tester');
Query OK, row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(6,'Linda',    'Green',    '19870730', '19960104', 4322.78,'New York',  'Tester');
Query OK, row affected (0.01 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(7,'David',    'Larry',    '19901231', '19980212', 7897.78,'New York',  'Manager');
Query OK, row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(8,'James',    'Cat',     '19960917',  '20020415', 1232.78,'Vancouver', 'Tester');
Query OK, row affected (0.00 sec)

mysql>
mysql> select from Employee;
+------+------------+-----------+------------+------------+---------+-----------+-------------+
| id   | first_name | last_name | start_date | end_date   | salary  | city      | description |
+------+------------+-----------+------------+------------+---------+-----------+-------------+
|    | Jason J    | Martin    | 1996-07-25 2006-07-25 1234.56 | Toronto   | Programmer  |
|    | Ali J son  | Mathews   | 1976-03-21 1986-02-21 6661.78 | Vancouver | Tester      |
|    | James      | Smith     | 1978-12-12 1990-03-15 6544.78 | Vancouver | Tester      |
|    | Celia      | Rice      | 1982-10-24 1999-04-21 2344.78 | Vancouver | Manager     |
|    | Robert     | Black     | 1984-01-15 1998-08-08 2334.78 | Vancouver | Tester      |
|    | Linda      | Green     | 1987-07-30 1996-01-04 4322.78 | New York  | Tester      |
|    | David      | Larry     | 1990-12-31 1998-02-12 7897.78 | New York  | Manager     |
|    | James      | Cat       | 1996-09-17 2002-04-15 1232.78 | Vancouver | Tester      |
+------+------------+-----------+------------+------------+---------+-----------+-------------+
rows in set (0.00 sec)

mysql>
mysql>
mysql>
mysql>
mysql> SELECT id, first_name
    -> FROM employee
    -> WHERE
    -> MATCH(first_nameAGAINST ('J');
Empty set (0.02 sec)

mysql>
mysql>
mysql>
mysql>
mysql> drop table Employee;
Query OK, rows affected (0.00 sec)

mysql>
mysql>
2.23.Full Text Search
2.23.1.Using Full Text Searches
2.23.2.The MATCH function also sorts multiple results be relevance with the first result being the most relevant
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