MS Access UPDATE 查询错误

Question

I am having a hard time using MS Access because the syntax is a little finicky compared to other db's.

I am trying to validate a table and compare that table to a master table with multiple columns of information. At the moment I am trying to update a table with a field name of Difference_Value in table ct2011 to be equal to (ct2011.Distribution_Amount - AggregateFinal.SumOfDollars) .

Also specifying the lines in which are going to be updated because not all rows in the MASTER are in the table ct2011 .

Below is my query.

UPDATE ct2011
SET ct2011.Difference_Value = (ct2011.Distribution_Amount - AggregateFinal.SumOfDollars)
FROM
       ct2011 as ct
INNER JOIN 
       AggregateFinal af
ON
       ct.Employee_ID = af.EmpId AND ct.Legal_Name = af.LegalName AND ct.Distribution_Plan_Year = af.CalculationAwardPeriod AND ct.Award_Year = af.AwardPeriod;

I am getting a Syntax error (missing operator) . It specifies that it is encountering the error during the SET expressions after the = .

Answer 1

In an MS Access update query, the join criteria should follow the update keyword, eg:

update 
    ct2011 ct inner join aggregatefinal af on
    ct.employee_id = af.empid and 
    ct.legal_name = af.legalname and 
    ct.distribution_plan_year = af.calculationawardperiod and
    ct.award_year = af.awardperiod
set 
    ct.difference_value = (ct.distribution_amount - af.sumofdollars)