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How to implement HAVING LENGTH(field) in MySQL?
Let us first create a table −
mysql> create table DemoTable ( Title text ); Query OK, 0 rows affected (0.39 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('Introduction to MySQL');
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable values('Introduction to Java');
Query OK, 1 row affected (0.09 sec)
mysql> insert into DemoTable values('Introduction to SQL');
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable values('Introduction to Python');
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable values('Introduction to SQL');
Query OK, 1 row affected (0.09 sec)
mysql> insert into DemoTable values('Introduction to Java');
Query OK, 1 row affected (0.13 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+------------------------+ | Title | +------------------------+ | Introduction to MySQL | | Introduction to Java | | Introduction to SQL | | Introduction to Python | | Introduction to SQL | | Introduction to Java | +------------------------+ 6 rows in set (0.00 sec)
Following is the query to implement HAVING LENGTH(field) in MySQL −
mysql> select *from DemoTable group by length(Title) having length(Title) < 21;
This will produce the following output −
+----------------------+ | Title | +----------------------+ | Introduction to SQL | | Introduction to Java | +----------------------+ 2 rows in set (0.00 sec)
Updated on: 24-Sep-2019
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