I Want to Do
I want to query for a set of nodes, and then assign those nodes as the target of new edges.
What I Did
I run an upsert like this:
upsert {
query {
p1 as var(func: eq(xid, "EXT_ID")) @recurse {
child as children
}
}
mutation {
set {
uid(p1) <ecosystem> uid(child) .
}
}
}
However, even if the “EXT_ID” don’t have any children (meaining the child variable is empty), a new edge <ecosystem> from p1 to a new empty node is created.
This is, even if the query
{
p1(func: eq(xid, "EXT_ID")) {
eco as children {
uid
}
}
eco(func: uid(eco)) {
uid
}
}
returns empty,
"data": {
"p1": [],
"eco": []
},
the upsert shown above results in a new node being returned from the query
{
perspectives(func: eq(xid, "EXT_ID")) {
ecosystem {
uid
}
}
}
The result of the query before running the upsert:
"perspectives": [
{
"ecosystem": [
{
"uid": "0x111704"
},
{
"uid": "0x113e11"
}
]
}
]
and after running the upsert
"perspectives": [
{
"ecosystem": [
{
"uid": "0x111704"
},
{
"uid": "0x113e11"
},
{
"uid": "0x113e12"
}
]
}
]
Dgraph Metadata
docker image dgraph/standalone:v20.03.3
ubuntu 20
