Batch update of a SQL table

Can anyone help a beginner with some T-SQL which runs as a scheduled stored procedure to update a table with is then accessed via an ASP web application.

I have a table called Loans which contains a calculated column which will indicate in days if a loan item is late and also each row has a charges column to reflect a charge for late returns.

In a seperate table I have a charge per day for late returns. I read this into a variable @.LateCharges

I'd like to consutruct some T-SQL to scan through the Loans table and for every row where Status is not 'Returned' I woule like it to update the charges column based on the DaysLatecolumn*@.Latecharges

Any help much appreciated.

Regards

Clive

UPDATE Loans
SET CHARGES = CHARGES + @.LateCharges
WHERE Status <> 'Returned'

|||

Hi

That would almost do it I think - however it would need to read the value of DaysLate in each case too - can I just use that name in my set statement and it woudl automatically be the one applicable to the current row?

ie:

UPDATE Loans
SET CHARGES = DaysLate * @.LateCharges
WHERE Status <> 'Returned'

|||

It sounds like you need to do a join. rather than read just one value into a variable. Please post the table definitions.