Closed pebbe closed 2 years ago
Hi Peter,
I'm not sure what the reason is for having the array operation have a different result type from the head operation.
I will bring this to the attention of those responsible.
Thanks!
John
On Wed, Nov 18, 2020 at 10:48 AM Peter Kleiweg notifications@github.com wrote:
The AgensGraph Developer Manual for head() says: Returns the first element in the list.
It doesn't mention that the element may be converted to another type.
Below is an example with head(). With last() you get similar results.
Is this a feature or a bug? If it's a feature, then perhaps the documentation should mention this?
peter=# match (:node)-[r:rel*2]->(:node) return r[0] limit 1; r
rel[11.2][5.1,5.2]{"rel": "--", "primary": true} (1 row)
peter=# match (:node)-[r:rel*2]->(:node) return head(r) limit 1; head
{"id": "11.2", "end": "5.2", "tid": "(0,2)", "start": "5.1", "properties": {"rel": "--", "primary": true}} (1 row)
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The AgensGraph Developer Manual for
head()
says: Returns the first element in the list.It doesn't mention that the element may be converted to another type.
Below is an example with
head()
. Withlast()
you get similar results.Is this a feature or a bug? If it's a feature, then perhaps the documentation should mention this?