arangodb实现关系数据库的union all

最开始想不到如何实现，今天茅坑顿开，不就是两个数组的append嘛 

FOR x IN APPEND(
(
FOR v IN `test-dir`
    FILTER LIKE(v.name,"d%")
    RETURN {isDir:true,name:v.name}
),
(
FOR v IN `test-file`
    FILTER LIKE(v.name,"f%")
    RETURN {isDir:false,name:v.name}
)
) 
LIMIT 57,10
RETURN x
/*

标签：isDir,RETURN,name,union,arangodb,FILTER,关系数据库,test,LIKE
来源： https://blog.csdn.net/Linzhongyilisha/article/details/95750381