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MySQL query to fetch column length declared with BLOB type
For this, use the LENGTH() function from MySQL. Let us first create a table. We have declared the type of column as BLOB −
mysql> create table DemoTable ( Title blob ); Query OK, 0 rows affected (0.57 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('This is a MySQL tutorial');
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable values('Java is an object oriented programming language');
Query OK, 1 row affected (0.61 sec)
mysql> insert into DemoTable values('C is a procedural language');
Query OK, 1 row affected (0.20 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-------------------------------------------------+ | Title | +-------------------------------------------------+ | This is a MySQL tutorial | | Java is an object oriented programming language | | C is a procedural language | +-------------------------------------------------+ 3 rows in set (0.00 sec)
Following is the query to fetch column length declared with BLOB type using the LENGTH() method −
mysql> select length(Title) from DemoTable;
This will produce the following output −
+---------------+ | length(Title) | +---------------+ | 24 | | 47 | | 26 | +---------------+ 3 rows in set (0.00 sec)
Updated on: 03-Oct-2019
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