Purpose
Determine the number of specified parts.
Assumptions
There is one List group (in the expression), defined as follows.
|
Parts |
Attributes include quantity, id. |
Query Expression
Parts(id=’id1’).quantity
Where
|
Criteria |
Is/are the: |
|
|
id |
Nested Parts list group attribute |
(Parts.id) |
|
'id1' |
Part name |
|
|
quantity |
List group attribute |
|
Query Expression says:
Return the quantity of id1 parts.
Query Expression Results
The results for the above attribute list might look like this:
|
1 |
55 |
The quantity of the part id1 is 55.
Note: Anything you can do in the sub-expressions mentioned in section 3 can be done in these sub-expressions.
|
|
Order Execution Mgt. Query expression descriptions. |
