Question

I have table which contains double values stored in mysql database …I need to calculate the sum of three fields from three tables.
will the query select sum(r.columnname * (r.table2.columnname2/r3.columname1)) from table name.

where r,r1,r2 are table names.

columnname is the name of the column in the particular table concerned.all the column have double values in table .

will the above query give accurate value ..I am dealing with currencies in those tables .

can i round and sum the values or else any other query is available for this condition

Answer 1

If I’m understanding correctly that you want to round the sum, because it represents money, then you’ll want to do this:

... ROUND( sumhere, 2 ) ...;