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Count values from comma-separated field in MySQL?
You can count values from comma-separated field using CHAR_LENGTH() method from MySQL. The syntax is as follows −
SELECT *, (CHAR_LENGTH(yourColumnName) - CHAR_LENGTH(REPLACE(yourColumnName, ',','')) + 1) 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 CountValuesCommaSeparated -> ( -> Id int NOT NULL AUTO_INCREMENT, -> CommaSeparatedValue text, -> PRIMARY KEY(Id) -> ); Query OK, 0 rows affected (1.76 sec)
Insert some records in the table using insert command. The query is as follows −
mysql> insert into CountValuesCommaSeparated(CommaSeparatedValue)
values('101,104,1900,46675,7895');
Query OK, 1 row affected (0.16 sec)
mysql> insert into CountValuesCommaSeparated(CommaSeparatedValue)
values('1010,18949,37465');
Query OK, 1 row affected (0.21 sec)
mysql> insert into CountValuesCommaSeparated(CommaSeparatedValue)
values('2010,1201,2743874,7485');
Query OK, 1 row affected (0.42 sec)
mysql> insert into CountValuesCommaSeparated(CommaSeparatedValue)
values('4757,457587,48586,378575,3874765,487565');
Query OK, 1 row affected (0.26 sec)Display all records from the table using select statement. The query is as follows −
mysql> select *from CountValuesCommaSeparated;
The following is the output −
+----+-----------------------------------------+ | Id | CommaSeparatedValue | +----+-----------------------------------------+ | 1 | 101,104,1900,46675,7895 | | 2 | 1010,18949,37465 | | 3 | 2010,1201,2743874,7485 | | 4 | 4757,457587,48586,378575,3874765,487565 | +----+-----------------------------------------+ 4 rows in set (0.00 sec)
Here is the query to count values from comma separated fields:
mysql> select *, -> (CHAR_LENGTH(CommaSeparatedValue) - CHAR_LENGTH(REPLACE(CommaSeparatedValue, ',', '')) + 1) as TotalValue -> from CountValuesCommaSeparated;
The following is the output −
+----+-----------------------------------------+------------+ | Id | CommaSeparatedValue | TotalValue | +----+-----------------------------------------+------------+ | 1 | 101,104,1900,46675,7895 | 5 | | 2 | 1010,18949,37465 | 3 | | 3 | 2010,1201,2743874,7485 | 4 | | 4 | 4757,457587,48586,378575,3874765,487565 | 6 | +----+-----------------------------------------+------------+ 4 rows in set (0.00 sec)
Updated on: 30-Jun-2020
2K+ Views
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