Imagine that _key
is a series which is always increasing, such as:
{
_key:1,
name: John,
...
},
{
_key:2,
name ...
},
...
I would like to get the maximum value of _key
so I can include another element with a _key + 1
value.
I am using python-arango
but I could collect the AQL query too.
To get the largest numerical _key
value of collection coll
so far:
FOR c IN coll
COLLECT AGGREGATE maxk = MAX(c._key)
RETURN {max_coll_key: TO_NUMBER(maxk)}
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