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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)
Updated on: 26-Jun-2020
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