Fetch rows where a field value is less than 5 chars in MySQL?
To fetch rows where a field value is less than 5 chars, you need to use LENGTH() function. The syntax is as follows −
SELECT *FROM yourTableName WHERE LENGTH(yourColumnName) < 5;
To understand the above syntax, let us create a table. The query to create a table is as follows −
mysql> create table fieldLessThan5Chars
-> (
-> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
-> yourZipCode varchar(10)
-> );
Query OK, 0 rows affected (0.52 sec)
Now you can insert some records in the table using insert command. The query is as follows −
mysql> insert into fieldLessThan5Chars(yourZipCode) values('35801');
Query OK, 1 row affected (0.10 sec)
mysql> insert into fieldLessThan5Chars(yourZipCode) values('3580');
Query OK, 1 row affected (0.20 sec)
mysql> insert into fieldLessThan5Chars(yourZipCode) values('90001');
Query OK, 1 row affected (0.40 sec)
mysql> insert into fieldLessThan5Chars(yourZipCode) values('100');
Query OK, 1 row affected (0.20 sec)
mysql> insert into fieldLessThan5Chars(yourZipCode) values('10');
Query OK, 1 row affected (0.17 sec)
mysql> insert into fieldLessThan5Chars(yourZipCode) values('0');
Query OK, 1 row affected (0.15 sec)
mysql> insert into fieldLessThan5Chars(yourZipCode) values('90209');
Query OK, 1 row affected (0.11 sec)
mysql> insert into fieldLessThan5Chars(yourZipCode) values('33124');
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 fieldLessThan5Chars;
The following is the output −
+----+-------------+
| Id | yourZipCode |
+----+-------------+
| 1 | 35801 |
| 2 | 3580 |
| 3 | 90001 |
| 4 | 100 |
| 5 | 10 |
| 6 | 0 |
| 7 | 90209 |
| 8 | 33124 |
+----+-------------+
8 rows in set (0.00 sec)
Example
Here is the query to fetch all rows where a field value is less than 5 characters −
mysql> select *from fieldLessThan5Chars where length(yourZipCode) < 5;
Output
+----+-------------+
| Id | yourZipCode |
+----+-------------+
| 2 | 3580 |
| 4 | 100 |
| 5 | 10 |
| 6 | 0 |
+----+-------------+
4 rows in set (0.00 sec)
Published on 19-Mar-2019 13:19:09
