ArangoDB AQL--图操作

示例：

顶点表：
insert {
_key:'u1',
name:'one'
} in  v_userid

insert {
_key:'u2',
name:'two'
} in v_userid


insert {
_key:'p1',
name:'px'
} in  v_phone

insert {
_key:'p2',
name:'py'
} in  v_phone

边表：
insert {
_key:'u1-p2',
u:'u1',
p:'p2'
} in  e_userid_phone

图查询：
for v,e,p
in 1..2
outbound ' v_userid/u1' graph 'graph1'
return p

说明:

基于图操作的语法：

FOR vertex[, edge[, path]]
  IN [min[..max]]
  OUTBOUND|INBOUND|ANY startVertex
  GRAPH graphName
  [OPTIONS options]

基于集合操作的预发：

FOR vertex[, edge[, path]]
  IN [min[..max]]
  OUTBOUND|INBOUND|ANY startVertex
  edgeCollection1, ..., edgeCollectionN
  [OPTIONS options]

参考：

https://docs.arangodb.com/3.2/AQL/Graphs/