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Limit length of longtext field in MySQL SELECT results?
You can use SUBSTRING() from MySQL to limit length of strings. The syntax is as follows
SELECT SUBSTRING(yourColumnName,1,yourIntegerValueToGetTheCharacters) as anyVariableName from yourTableName;
To understand the above syntax, let us create a table. The query to create a table is as follows
mysql> create table limitLengthOfLongTextDemo -> ( -> sentence LONGTEXT -> ); Query OK, 0 rows affected (0.74 sec)
Insert some records in the table using insert command. The query is as follows
mysql> insert into limitLengthOfLongTextDemo values('This is the introduction to MySQL');
Query OK, 1 row affected (0.17 sec)
mysql> insert into limitLengthOfLongTextDemo values('PL/SQL is the extension of Structured
Query Language');
Query OK, 1 row affected (0.19 sec)
mysql> insert into limitLengthOfLongTextDemo values('Java is an Object Oriented
Programming Language');
Query OK, 1 row affected (0.20 sec)Display all records from the table using select statement. The query is as follows
mysql> select *from limitLengthOfLongTextDemo;
The following is the output
+------------------------------------------------------+ | sentence | +------------------------------------------------------+ | This is the introduction to MySQL | | PL/SQL is the extension of Structured Query Language | | Java is an Object Oriented Programming Language | +------------------------------------------------------+ 3 rows in set (0.00 sec)
Here is the query to get the characters of the given value
mysql> select substring(sentence,1,26) as 26Characters from limitLengthOfLongTextDemo;
The following is the output
+----------------------------+ | 26Characters | +----------------------------+ | This is the introduction t | | PL/SQL is the extension of | | Java is an Object Oriented | +----------------------------+ 3 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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