MySql Error :: Ошибка в синтаксисе SQL

Question

MySql запрос ниже:

SELECT Name, 
SUM(Balance) AS Balance, 
(IF (Balance<=0), abs(Balance), 0) AS Exc, 
(IF (Balance>=0), Balance, 0) AS Del 
from table1 group by name 

Mysql ошибка:

You have an error in your sql syntax; check manual that corresponds to your MySql server version for the right syntax to use near 

Answer 1

Вы можете использовать СЛУЧАЙ ... КОГДА conditinnal заявление как этот

SELECT Name, 
    SUM(Balance) AS Balance, 
    (CASE WHEN SUM(Balance)>=0 THEN SUM(Balance) WHEN SUM(Balance)<0 THEN SUM(Balance) * -1 END) AS Balance_Positive 
    from table1 group by name 

Answer 2

SELECT Name, 
SUM(Balance) AS Balance, 
IF((SUM(Balance)<=0), abs(SUM(Balance)), 0) AS Exc, 
IF((SUM(Balance)>=0),SUM(Balance), 0) AS Del 
from table1 group by Name