SQL update query syntax with inner join

Question

Can anyone find my error in this query? I\'m using SQL Server 2000 and I want to update all entries in the CostEntry table to the corresponding value in the ActiveCostDetai

Answer 1

Once you have set an alias name for the table, you cannot use the table name. Try your query this way, it will work.

UPDATE CostEntry CE 

        INNER JOIN 
            ActiveCostDetails AD 
            ON (CE.lUniqueID = AD.UniqueID)

           SET CE.sJobNumber = AD.JobNumber

         WHERE CE.SEmployeeCode = '002'
           AND SubString(CostCentre, 1, 1) = sDepartmentCode
           AND substring(CostCentre, 3, 1) = sCategoryCode
           AND substring(CostCentre, 5, 2) = sOperationCode

Answer 2

The SET needs to come before the FROM\JOIN\WHERE portion of the query.

UPDATE CE
SET sJobNumber = AD.JobNumber
FROM CostEntry CE 
    INNER JOIN ActiveCostDetails As AD 
        ON CE.lUniqueID = AD.UniqueID
WHERE CE.SEmployeeCode = '002'
    AND SubString(CostCentre, 1, 1) = sDepartmentCode
    AND substring(CostCentre, 3, 1) = sCategoryCode
    AND substring(CostCentre, 5, 2) = sOperationCode

Answer 3

This should work

UPDATE CE
SET CostEntry.sJobNumber = ActiveCostDetails.JobNumber
FROM CostEntry CE 
INNER JOIN ActiveCostDetails As AD ON CostEntry.lUniqueID = ActiveCostDetails.UniqueID       
     WHERE CostEntry.SEmployeeCode = '002'
       AND SubString(CostCentre, 1, 1) = sDepartmentCode
       AND substring(CostCentre, 3, 1) = sCategoryCode
       AND substring(CostCentre, 5, 2) = sOperationCode