How to apply Substring() for fields in MySQL to get part of string?

You can use substring() for fields in MySQL to get part of string. Following is the syntax −

select substring(yourColumnName,yourStartingIndex,yourEndingIndex) from yourTableName;

Let us first create a table −

mysql> create table DemoTable
   (
   Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   Title longtext
   );
Query OK, 0 rows affected (0.57 sec)

Insert records in the table using insert command −

mysql> insert into DemoTable(Title) values('MySQL is a relational database management system');
Query OK, 1 row affected (0.12 sec)
mysql> insert into DemoTable(Title) values('MongoDB is a popular No SQL database');
Query OK, 1 row affected (0.18 sec)

Display all records from the table using select statement −

mysql> select * from DemoTable;

This will produce the following output −

+----+--------------------------------------------------+
| Id | Title                                            |
+----+--------------------------------------------------+
| 1  | MySQL is a relational database management system |
| 2  | MongoDB is a popular No SQL database             |
+----+--------------------------------------------------+
2 rows in set (0.00 sec)

Following is the query to use substring() method for fields −

mysql> select substring(Title,1,21) from DemoTable;

This will produce the following output −

+-----------------------+
| substring(Title,1,21) |
+-----------------------+
| MySQL is a relational |
| MongoDB is a popular  |
+-----------------------+
2 rows in set (0.00 sec)