Use OData $select to cherry pick fields from related object

Question

I'm using WebAPI 2.2 with OData V4.

It is possible for me to use $filter=RelatedObj/PropertyName eq 'Some Value' to filter a list of entities based on a related object property value.

However, when I try to use the same syntax with $select:

$select=Id,Name,RelatedObj/PropertyName

results in exception:

"message": "The query specified in the URI is not valid. Found a path with multiple navigation properties or a bad complex property path in a select clause. Please reword your query such that each level of select or expand only contains either TypeSegments or Properties.",
"innererror": {
"message": "Found a path with multiple navigation properties or a bad complex property path in a select clause. Please reword your query such that each level of select or expand only contains either TypeSegments or Properties.",
"type": "Microsoft.OData.Core.ODataException",

Can this be solved?

score 17 · Accepted Answer · answered Jan 27 '16 at 17:15

17

You can do it using $expand and nested $select query option

$select=Id,Name&$expand=RelatedObj($select=PropertyName)

See the ODATA documentation

answered Jan 27 '16 at 17:15

avitenberg

1,781
19
16

This doesn't work for (some?) properties. I get the error: "Invalid $select properties." I don't think the above syntax is supported for Microsoft Graph API (neither beta nor v1): https://learn.microsoft.com/en-us/graph/known-issues#query-parameter-limitations – VinnyQ77 Apr 07 '21 at 18:53

score 0 · Answer 2 · answered Jun 18 '15 at 19:41

0

If you want to perform a $select on an item under a navigation property, you need to first $expand the navigation property.

EntitySet?$select=Id,Name,RelatedObj/PropertyName&$expand=RelatedObj

answered Jun 18 '15 at 19:41

mitch

985
10
12

Use OData $select to cherry pick fields from related object

2 Answers2