On Apr 21, 2010, at 9:38 PM, Glen Parker wrote:
Not if qty_requested_available needs to be = qty_available...
indeed, i'm an idiot this week.
thanks a ton. this really helped me out!
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I'm trying to write a bit of logic as 1 query, but I can't seem to do
it under 2 queries.
i'm hoping someone can help
the basic premise is that i have an inventory management system , and
am trying to update the quantity available in the shopping
cart (which is different than the
Jonathan Vanasco postg...@2xlp.com writes:
I'm trying to write a bit of logic as 1 query, but I can't seem to do
it under 2 queries.
Uh, why can't you just push that CASE expression into the sub-select?
UPDATE
cart_item
SET
qty_requested_available =
( SELECT CASE
Tom Lane wrote:
Jonathan Vanasco postg...@2xlp.com writes:
I'm trying to write a bit of logic as 1 query, but I can't seem to do
it under 2 queries.
Uh, why can't you just push that CASE expression into the sub-select?
QUERY SNIPPED
You might have to qualify qty_requested here to make sure
it would be that, but with greatest
thank you. that's the exact query i was failing to write !
On Apr 21, 2010, at 8:51 PM, Glen Parker wrote:
UPDATE
cart_item
SET
qty_requested_available = least(cart_item.qty_requested,
stock.qty_available)
FROM
stock
WHERE
cart_item.stock_id =
Jonathan Vanasco wrote:
it would be that, but with greatest
Not if qty_requested_available needs to be = qty_available...
-Glen
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