[ic] decrement inventory in an additional table

[interchange-users@icdevgroup.org (Kevin Walsh)]

> >
> > If rows in your "menge" table cannot be uniquely identified by the
> > item code then you will not be able to use the [data] tag in the
> > way you quoted above; Use [query] instead.
> >
> ok rows cannot be uniquely identified, one item_code comes more than once
> ... so i try this:
> 
> [if variable DECREMENT_INVENTORY]Inventory of [item-code] now:
> 
> [query sql="update menge set ( quantity='-[item-quantity]' ) where
> sku='[item-code]' and username='[data session username]'  " ]
> [/query]
> 
> [/if]
> 
> but that brings me back to checkuou.html
> 
You are close.  Now you just need valid SQL syntax.

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