sql question regarding sum() and tax (MySQL 5.0.89)

Posted by jason on Stack Overflow See other posts from Stack Overflow or by jason
Published on 2010-03-28T07:41:56Z Indexed on 2010/03/28 7:43 UTC
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sql

|

mysql

|

sum

Select 
id,
sum(amount), 
vat 
From transactions WHERE id=1;

Each record in this table has a vat percentage, I need to get the total amount in all records, however each amount has to be multiplied by by its vat %.

Is there away to do this without looping through all records?

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