Question

I have a table like this :

+-------+------------+------+-----+---------+-------+
| Field | Type       | Null | Key | Default | Extra |
+-------+------------+------+-----+---------+-------+
| ID    | bigint(20) | NO   | PRI | NULL    |       |
| view  | bigint(20) | NO   |     | NULL    |       |
+-------+------------+------+-----+---------+-------+

Is it possible to do this with SQL’s IF-ELSE statement ?

1. Check if there is ID=1 row in table
2. If there is , increase view column by 1 .
3. If there isn’t, insert new row to table with ID=1

It should be something like this :

IF((SELECT COUNT(ID) FROM wp_viewcount WHERE ID=1) == 0)
BEGIN
INSERT INTO wp_viewcount VALUES (1,1)
END
ELSE
BEGIN
UPDATE wp_viewcount SET view=view+1 WHERE ID=1
END

Answer 1

The following SQL statement will result in the IF – ELSE logic you want, by using the on duplicate key syntax.

insert into wp_viewcount values(1,1) on duplicate key update view=view+1;