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Can I use SUM() with IF() in MySQL?
Yes, you can use SUM() with IF() in MySQL. Let us first create a demo table:
mysql> create table DemoTable ( Value int, Value2 int ); Query OK, 0 rows affected (0.51 sec)
Following is the query to insert some records in the table using insert command:
mysql> insert into DemoTable values(100,400); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(100,400); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values(400,100); Query OK, 1 row affected (0.14 sec)
Following is the query to display records from the table using select command:
mysql> select *from DemoTable;
This will produce the following output
+-------+--------+ | Value | Value2 | +-------+--------+ | 100 | 400 | | 100 | 400 | | 400 | 100 | +-------+--------+ 3 rows in set (0.00 sec)
Following is the query to use SUM() along with IF() that calculates how many 100s and 400s are in the above table:
mysql> SELECT SUM(IF(Value=100, 1, 0) + IF(Value2=100, 1, 0)) as Hundred, SUM(IF(Value=400, 1, 0) + IF(Value2=400, 1, 0)) as FourHundred FROM DemoTable;
This will produce the following output:
+---------+--------------+ | Hundred | FourHundred | +---------+--------------+ | 3 | 3 | +---------+--------------+ 1 row in set (0.00 sec)
Updated on: 30-Jul-2019
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