Sorry for another question.
In the UPDATE command, the order of evaluation is always as it is in the statement, left to right?
Let me show you and example:
update t1 set @Qty2Use = case when t1.qty_left >= @QtyUseRemain then @QtyUseRemain else t1.qty_left end,
t1.qty_left = t1.qty_left - @Qty2Use,
@QtyUseRemain = @QtyUseRemain - @Qty2Use,
t1.rec_id = case when t1.qty_left > 0 then '1' else '2' end,
@QtyLeft = t1.qty_left,
....
In my case, after the first iteration the value of the variable @QtyLeft remains greater than 0 even though the quantity should be reduced.
So, my question is, is the line
t1.qty_left = t1.qty_left - @Qty2Use,
always executed before the line:
@QtyLeft = t1.qty_left,
Or it is random?
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