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How to sum a comma separated string (string with numbers) in MySQL?
You can create a custom function to sum a comma-separated string in MySQL. Let us first create a table. Here, we have a varchar column, wherein we will add numbers in the form of strings −
mysql> create table DemoTable -> ( -> ListOfValues varchar(50) -> ); Query OK, 0 rows affected (0.56 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('20,10,40,50,60');
Query OK, 1 row affected (0.14 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+----------------+ | ListOfValues | +----------------+ | 20,10,40,50,60 | +----------------+ 1 row in set (0.00 sec)
Here is the query to create a function −
mysql> DELIMITER ?? mysql> create function totalSumInCommaSeparatedString(input varchar(50)) -> returns int -> deterministic -> no sql -> begin -> declare totalSum int default 0; -> while instr(input, ",") > 0 do -> set totalSum = totalSum + substring_index(input, ",", 1); -> set input = mid(input, instr(input, ",") + 1); -> end while; -> return totalSum + input; -> end ?? Query OK, 0 rows affected (0.17 sec) mysql> DELIMITER ;
Let us check the above function to get some of a comma-separated string in MySQL −
mysql> select totalSumInCommaSeparatedString(ListOfValues) as TotalSum from DemoTable;
This will produce the following output −
+----------+ | TotalSum | +----------+ | 180 | +----------+ 1 row in set (0.00 sec)
Updated on: 13-Dec-2019
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