聚合函数不能在mysql中工作

Question

I want to use aggregate function on mysql. I have to use this query.

SELECT COUNT (*) FROM \`pelayanan\` where \`ID_STATUS\` = '1'

But, It doesn`t work. It became error.

1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '*) FROM `pelayanan` where `ID_STATUS` = '1' LIMIT 0, 25' at line 1

It same error for the other aggregate function like sum.

How can I solve this problem?

Answer 1

This is your query:

SELECT COUNT (*)
FROM pelayanan 
where ID_STATUS = '1';

It is easier to see the problem when formatted correctly (for Stack Overflow). A space is not allowed after any function, including count(). So:

SELECT COUNT(*)
FROM pelayanan 
WHERE ID_STATUS = '1';

This is explained in a note in the documentation:

Note

By default, there must be no whitespace between a function name and the parenthesis following it. This helps the MySQL parser distinguish between function calls and references to tables or columns that happen to have the same name as a function. However, spaces around function arguments are permitted.